OIWBDAESMR50W90Digital Extender

Page 1 of 14 50W rev 3 - 11/03 Dekolink WIRELESS Ltd. 16 Bazel St. Qiryat-Arieh Petah-Tikva, Israel, 49510 Tel- 972-3-9180-180 Fax-972-3-- e-mail: [email protected] web www.decolink.com INSTALLATION AND OPERATING INSTRUCTIONS FOR HIGH POWER REPEATER MODEL: MW-BDA-ESMR-50W90 Page 2 of 14 50W rev 3 - 11/03 Dekolink WIRELESS Ltd. 16 Bazel St. Qiryat-Arieh Petah-Tikva, Israel, 49510 Tel- 972-3-9180-180 Fax-972-3-- e-mail: [email protected] web www.decolink.com TABLE OF CONTENTS PARAGRAPH PAGE No REPEATER OVERVIEW 3 BLOCK DIAGRAM DESCRIPTION 3 REPEATER (BDA) CONNECTION 3 STEP ATTENUATOR & RF GAIN & SETTING 4 AGC FUNCTION 4 BDA MONITOR 5 BDA MONITOR FUNCTIONS 6 BDA INSTALLATION 8 BASE / DONOR ANTENNA INSTALLATION 8 REMOTE / MOBILE SERVICE ANTENNA INSTALLATION 8 ANTENNA ISOLATION 8 INSTALLATION STEPS 9 RF EXPOSURE WARNING 10 ELECTRICAL SPECIFICATIONS 11 MECHANICAL SPECIFICATIONS 11 ENVIRONMENTAL CONDITIONS 11 MECHANICAL LAYOUT 12 MECHANICAL OUTLINE 13 LIMITED WARRANTY 14 LIST OF DRAWINGS DRAWING PAGE No REPEATER(BDA) RF BLOCK DIAGRAM 4 BDA MONITOR 7 BDA MONITOR BLOCK DIAGRAM 7 MECHANICAL LAYOUT 13 MECHANICAL OUTLINE 13 Page 3 of 14 50W rev 3 - 11/03 Dekolink WIRELESS Ltd. 16 Bazel St. Qiryat-Arieh Petah-Tikva, Israel, 49510 Tel- 972-3-9180-180 Fax-972-3-- e-mail: [email protected] web www.decolink.com REPEATER OVERVIEW: The Bi-Directional Repeater assembly provides an exceptional repeater/booster performance to extend the coverage area of radio communications in buildings and RF shielded environments. Features such as high linearity power amplifiers are contributing for the overall improved system linearity performances. The unit is based on a duplexed path configuration, having sharp out of band attenuation for improved isolation between the receiving and transmitting paths. BLOCK DIAGRAM DESCRIPTION: The Repeater Downlink path receives the RF signals from base station, amplifies them and transmits them to the subscriber. The Repeater Uplink path receives the RF signals from the subscriber, amplifies them and transmits them to the base station. Two duplexers frequency separate the signals to the proper amplifying path and isolate the two signals. For each path two amplifiers do the path signal amplification; a low noise amplifier (LNA) and a high power amplifier. The low noise amplifier has a 30 dB step attenuator to set the gain of the specific path. REPEATER (BDA) CONNECTION The RF connection is made via two type “N” female connectors. The RF connector labeled “Base” must be connected to the antenna pointing to the base station; usually a rooftop antenna. The RF connection labeled “Mobile” must be connected to the antenna pointing into the area to be covered by the Repeater such as inside a building or outdoor shaded area. Page 4 of 14 50W rev 3 - 11/03 Dekolink WIRELESS Ltd. 16 Bazel St. Qiryat-Arieh Petah-Tikva, Israel, 49510 Tel- 972-3-9180-180 Fax-972-3-- e-mail: [email protected] web www.decolink.com STEP ATTENUATOR AND RF GAIN SETTING For proper operation of the Repeater, the isolation between the base station antenna and the mobile antenna should exceed the Repeater gain by at least 12 dB. If the Repeater gain were higher than the isolation between the antennas, oscillation would start and would saturate the amplifier. Isolation few dB higher than the Repeater gain cannot start oscillations but would cause gain ripple in the band. The step attenuator on the low noise amplifier reduces the Repeater gain. The Repeater gain can be stepped down by the amount indicated on the step attenuator. AGC FUNCTION The Repeater has AGC function on both paths that serve to prevent the saturation of the power amplifier. When a high signal is received the AGC circuit detects the amplitude and sends a feedback signal to a variable attenuator, which attenuates the signal level so that the output power of the amplifier does not exceed the preset limit. The green LED on the BDA monitor (AGC Range) illuminates when the power output of the amplifier is within the set limit. An On/Off switch on the connection box enables the AGC function. If the AGC is disabled then the amplifier gives maximum gain. WARNING: For proper operation the AGC switch must be ON to prevent excessive spurious. Duplexer Downlink Duplexer Uplink LNA Attenuator Power Monitor PA AGC LNA Attenuator Power Monitor PA AGC BDA RF BLOCK DIAGRAM TO BASE TO MOBILE Page 5 of 14 50W rev 3 - 11/03 Dekolink WIRELESS Ltd. 16 Bazel St. Qiryat-Arieh Petah-Tikva, Israel, 49510 Tel- 972-3-9180-180 Fax-972-3-- e-mail: [email protected] web www.decolink.com BDA MONITOR The BDA monitor circuit monitors the following functions: RF power transmitted by the power amplifiers. For the downlink channel a red fault LED illuminates if the power is 10 dB below the specified composite power. In normal use the downlink channel continuously transmits RF signals and this LED should be on. When the donor reception from the base is bad this LED turns on to warn that the repeater is not being used efficiently. Another green LED illuminates when the power reaches or exceeds this power (10W). This is used to set the repeater gain. This limit is the same as the AGC limit and is factory preset. For the uplink channel a green indicator LED illuminates when the power reaches or exceeds its composite power (1W). When the isolation between the antennas is bad this LED lits permanently. This LED should turns on only when a near by cellular is used. This limit is the same as the AGC limit and is factory preset. DC voltage of the channels. The fault LED illuminates when the voltage is below or above the specified limits. DC current to each of the two LNAs and the uplink power amplifier. If the current is below or above the specified limits then a LED illuminates. Page 6 of 14 50W rev 3 - 11/03 Dekolink WIRELESS Ltd. 16 Bazel St. Qiryat-Arieh Petah-Tikva, Israel, 49510 Tel- 972-3-9180-180 Fax-972-3-- e-mail: [email protected] web www.decolink.com BDA MONIT…

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Dekolink WIRELESS Ltd. 16 Bazel St. Qiryat-Arieh Petah-Tikva, Israel, 49510 Tel- 972-3-9180-180 Fax-972-3-190-9180 e-mail:marketing@decolinkcomweb wwwdecolinkcom Page 1 of 14 50W rev 4  02/04 INSTALLATION AND OPERATING INSTRUCTIONS FOR HIGH POWER REPEATER MODEL: MW-BDA-ESMR-50W90 Dekolink WIRELESS Ltd. 16 Bazel St. Qiryat-Arieh Petah-Tikva, Israel, 49510 Tel- 972-3-9180-180 Fax-972-3-190-9180 e-mail:marketing@decolinkcomweb wwwdecolinkcom Page 2 of 14 50W rev 4  02/04 TABLE OF CONTENTS PARAGRAPH PAGE No REPEATER OVERVIEW 3 BLOCK DIAGRAM DESCRIPTION 3 REPEATER (BDA) CONNECTION 3 STEP ATTENUATOR & RF GAIN & SETTING 4 AGC FUNCTION 4 BDA MONITOR 5 BDA MONITOR FUNCTIONS 6 BDA INSTALLATION 8 BASE / DONOR ANTENNA INSTALLATION 8 REMOTE / MOBILE SERVICE ANTENNA INSTALLATION 8 ANTENNA ISOLATION 8 INSTALLATION STEPS 9 RF EXPOSURE WARNING 10 ELECTRICAL SPECIFICATIONS 11 MECHANICAL SPECIFICATIONS 11 ENVIRONMENTAL CONDITIONS 11 MECHANICAL LAYOUT 12 MECHANICAL OUTLINE 13 LIMITED WARRANTY 14 LIST OF DRAWINGS DRAWING PAGE No REPEATER(BDA) RF BLOCK DIAGRAM 4 BDA MONITOR 7 BDA MONITOR BLOCK DIAGRAM 7 MECHANICAL LAYOUT 13 MECHANICAL OUTLINE 13 Dekolink WIRELESS Ltd. 16 Bazel St. Qiryat-Arieh Petah-Tikva, Israel, 49510 Tel- 972-3-9180-180 Fax-972-3-190-9180 e-mail:marketing@decolinkcomweb wwwdecolinkcom Page 3 of 14 50W rev 4  02/04 REPEATER OVERVIEW: The Bi-Directional Repeater assembly provides an exceptional repeater/booster performance to extend the coverage area of radio communications in buildings and RF shielded environments. Features such as high linearity power amplifiers are contributing for the overall improved system linearity performances. The unit is based on a duplexed path configuration, having sharp out of band attenuation for improved isolation between the receiving and transmitting paths. BLOCK DIAGRAM DESCRIPTION: The Repeater Downlink path receives the RF signals from base station, amplifies them and transmits them to the subscriber. The Repeater Uplink path receives the RF signals from the subscriber, amplifies them and transmits them to the base station. Two duplexers frequency separate the signals to the proper amplifying path and isolate the two signals. For each path two amplifiers do the path signal amplification; a low noise amplifier (LNA) and a high power amplifier. The low noise amplifier has a 30 dB step attenuator to set the gain of the specific path. REPEATER (BDA) CONNECTION The RF connection is made via two type “N” female connectors. The RF connector labeled “Base” must be connected to the antenna pointing to the base station; usually a rooftop antenna. The RF connection labeled “Mobile” must be connected to the antenna pointing into the area to be covered by the Repeater such as inside a building or outdoor shaded area. Duplexer Downlink Duplexer Uplink LNA Attenuator Power Monitor PA AGC LNA Attenuator Power Monitor PA AGC BDA RF BLOCK DIAGRAM TO BASE TO MOBILE Page 4 of 14 50W rev 4  02/04 Dekolink WIRELESS Ltd. 16 Bazel St. Qiryat-Arieh Petah-Tikva, Israel, 49510 Tel- 972-3-9180-180 Fax-972-3-190-9180 e-mail:marketing@decolinkcomweb wwwdecolinkcom STEP ATTENUATOR AND RF GAIN SETTING For proper operation of the Repeater, the isolation between the base station antenna and the mobile antenna should exceed the Repeater gain by at least 12 dB. If the Repeater gain were higher than the isolation between the antennas, oscillation would start and would saturate the amplifier. Isolation few dB higher than the Repeater gain cannot start oscillations but would cause gain ripple in the band. The step attenuator on the low noise amplifier reduces the Repeater gain. The Repeater gain can be stepped down by the amount indicated on the step attenuator. AGC FUNCTION The Repeater has AGC function on both paths that serve to prevent the saturation of the power amplifier. When a high signal is received the AGC circuit detects the amplitude and sends a feedback signal to a variable attenuator, which attenuates the signal level so that the output power of the amplifier does not exceed the preset limit. The green LED on the BDA monitor (AGC Range) illuminates when the power output of the amplifier is within the set limit. An On/Off switch on the connection box enables the AGC function. If the AGC is disabled then the amplifier gives maximum gain. For proper operation the AGC switch must be ON to prevent excessive spurious. Dekolink WIRELESS Ltd. 16 Bazel St. Qiryat-Arieh Petah-Tikva, Israel, 49510 Tel- 972-3-9180-180 Fax-972-3-190-9180 e-mail:marketing@decolinkcomweb wwwdecolinkcom Page 5 of 14 50W rev 4  02/04 BDA MONITOR The BDA monitor circuit monitors the following functions: RF power transmitted by the power amplifiers. For the downlink channel a red fault LED illuminates if the power is 10 dB below the specified composite power. In normal use the downlink channel continuously transmits RF signals and this LED should be on. When the donor reception from the base is bad this LED turns on to warn that the repeater is not being used efficiently. Another green LED illuminates when the power reaches or exceeds this power (10W). This is used to set the repeater gain. This limit is the same as the AGC limit and is factory preset. For the uplink channel a green indicator LED illuminates when the power reaches or exceeds its composite power (1W). When the isolation between the antennas is bad this LED lits permanently. This LED should turns on only when a near by cellular is used. This limit is the same as the AGC limit and is factory preset. DC voltage of the channels. The fault LED illuminates when the voltage is below or above the specified limits. DC current to each of the two LNAs and the uplink power amplifier. If the current is below or above the specified limits then a LED illuminates. Dekolink WIRELESS Ltd. 16 Bazel St. Qiryat-Arieh Petah-Tikva, Israel, 49510 Tel- 972-3-9180-180 Fax-972-3-190-9180 e-mail:marketing@decolinkcomweb wwwdecolinkcom Page 6 of 14 50W rev 4  02/04 BDA MO…

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Dekolink WIRELESS Ltd. 16 Bazel St. Qiryat-Arieh Petah-Tikva, Israel, 49510 Tel- 972-3-9180-180 Fax-972-3-- e-mail: [email protected] web www.dekolink.com Page 1 of 1 BDA ESMR 50W90 SCHEMATICS.doc BDA ESMR 50W90 BLOCK DIAGRAM TO MOBILE TO BASE Duplexer RX TX BDA MONITOR CURRENT SENSORS FAN POWER SUPPLY AC CORD +V IN BDA-ESMR-50W90 ELELCTRICAL SCHEMATICS +28 V Duplexer RX TX Power Monitor PA AGC Power Monitor PA AGC LNA LNA

Page 1 of 1 50W rev 2 - 09/02 Dekolink WIRELESS Ltd. 16 Bazel St. Qiryat-Arieh Petah-Tikva, Israel, 49510 Tel- 972-3-9180-180 Fax-972-3-- e-mail: [email protected] web www.decolink.com August 7, 2003 American TCB 6731 Whittier Ave Suite C110 McLean, VA 22101 USA Subject: Request for confidentiality a high power repeater, FCC ID:OIWBDAESMR50W90 Dear Gentlemen, We apply to you with request to withhold Decolink Wireless Ltd. trade secrets in Application for Certification for a high power repeater, model MW-BDA-ESMR-50W90, FCC ID:OIWBDAESMR50W90. These trade secrets can be found in the repeater schematic diagram (4 pages of this Application). Many thanks in advance. Sincerely yours, Moshe Minkin Quality Assurance director Decolink Wireless Ltd

American Telecommunications Certification Body Inc. 6731 Whittier Ave, McLean, VA 22101 August 28, 2003 RE: Dekolink Wireless Ltd. FCC ID: OIWBDAESMR50W90 After a review of the submitted information, I have a few comments on the above referenced Application. 1) The FRN Number provided (0009032668) appears to be invalid from checking on the FCC website. Please provide a correct FRN number for Dekolink Wireless Ltd. 2) Clear Top and Bottom Photographs are required for all components in the RF path (Uplink/Downlink Amplifiers, Uplink/Downlink Preamplifiers, diplexers, AGC circuits, etc.). Please provide. 3) Due to the fonts style uses on the label, the letter "S" and Number "5" can not be distinguished. Please provide an updated label that utilizes a different font. 4) Are the amplifiers, preamps, AGC circuits, diplexers designed and/or built by Dekolink? If so, please provide parts lists for all components in the RF path. Otherwise, please provide a parts list that shows the vendor of these parts (amplifiers, preamps, diplexers, etc). 5) It appears that the schematics provided are only for the uplink path. Please also provide schematics for the downlink path. 6) Please provide a Tune up procedure over power range. 7) Note: FYI, because this is a licensed device, RF exposure issues are addressed at the time of licensing for the end user of this device. Therefore the RF exposure exhibit has not been evaluated. It is suggested that the RF exposure section also be removed from the test report. 8) This device contains AGC circuitry. Please explain the derivation of the input drive level provided into the EUT in order to obtain the maximum power output. 9) Since the device contains AGC circuitry, please provide data/tables showing the measured output power vs. input level from the lowest expected input to the maximum rated input power allowed (approx -51 dBm to +10 dBm, etc.) 10) The operational description appears to state the amplifier has 45 dB of gain. However in table 1 of the test report, it appears that the gain between input and output is > 60 dB. Please explain. 11) The maximum output rating for the downlink in the test report is 8.3 Watts. The operational description states a 10 Watt rating. Note that the FCC expects the unit to be adjusted for worse case conditions expected while following the tune up procedure performed by the factory. The worse case condition will be shown on the grant and it is expected all manufactured units will be equal to or less than this value. Please verify the worse case output power and if necessary have the manufacture adjust for worse case conditions following their tune up procedures and remeasure. 12) Please comment on if this device is designed for single carrier or multi-carrier use. Has the output power been checked for multi-carrier conditions? 13) Please comment on if the input signals supplied to the unit are considered a typical expected input signal (level and modulation). Additionally, please provide a list of expected modulations for use with this device (731 form listed D7W). Note that certain tests must be performed for all expected modulation types. 14) Please provide justification for the use of D7W emissions. -- Continued on Next Page -- z Page 2August 28, 2003 15) Radiated spurious emissions are not necessary to be performed for 3 carriers but instead with a narrow band CW signal. Note that a single channel creates a higher power level which usually creates higher level spurious emissions. Please provide additional radiated spurious emissions for a single carrier configuration. For future applications it is necessary to only perform this test using the single carrier method. 16) FYI...Testing for this type of device is required to provide a comparison of bandwidth of the input to the output signal generated as shown in section 4.2 of the report. Note that because the device does not generate the actual TX signal, testing to inband (806-821, 851-866) emissions masks is not necessary. 17) FYI...An easy way to deal with limits for antenna conducted is that 43 + 10 log (P) equals a limit of -13 dBm Timothy R. Johnson Examining Engineer mailto: [email protected] The items indicated above must be submitted before processing can continue on the above referenced application. Failure to provide the requested information may result in application termination. Correspondence should be considered part of the permanent submission and may be viewed from the Internet after a Grant of Equipment Authorization is issued. Please do not respond to this correspondence using the email reply button. In order for your response to be processed expeditiously, you must submit your documents through the AmericanTCB.com website. Also, please note that partial responses increase processing time and should not be submitted. Any questions about the content of this correspondence should be directed to the sender.

HERMON LABORATORIES October 22, 2003 American TCB 6731 Whittier Ave Suite C110 McLean, VA 22101 Attn: Mr. T. Johnson, Examining Engineer RE: your e-mail dated August 28, 2003; Dekolink Wireless Ltd. FCC ID: OIWBDAESMR50W90, ATCB000672 Dear Mr. Johnson, Please find below the answers to your questions. 1) The correct FRN is 0009032368. The changed Form 731 was uploaded on September 16, 2003. 2) Internal photographs “Internal_photos_15558_rev1” were uploaded on September 16, 2003. 3) A revised label “Label_rev1_15558” was uploaded on September 16, 2003 via Label Location folder. 4) Part list 3 files were uploaded on September 16, 2003. 5) The schematics file BDA_ESMR_CIRCUITS_15558 was uploaded on September 16, 2003 via Schematics folder. 6) The “Tune_up_procedure_15558” and “AGC_function_description_15558” files were uploaded on September 16, 17, 2003 via Additional information. 7) This section was removed from the test report, refer to DECRAD_FCC.15558_rev1, uploaded on September 16, 2003 via Test Reports folder. 8) Min input level corresponds to the maximum gain of the amplifier and vice versa. Max and min input signal levels, max and min gain values were claimed by the manufacturer, as you suggested in your e-mail dated June 10, 2003 9) The test suite was confirmed by you in e-mail dated June 10, 2003, items a, b, c, d. Upon this the amplitude characteristic test was not supposed to be performed. 10) One of the BDA components, LNA, has the 45 dB gain. The gain between the BDA input and output can be adjusted in the 60 ÷ 90 dB range. 11) The new measurements were performed in downlink mode: a) measurements for single frequency were repeated with the same settings as depicted in DECRAD_FCC.15558 test report; b) entire operating band with 3 tones input signal was captured and aggregate power was calculated; c) the total power was measured with a power meter and is equal to aggregate power. The measurements were performed for minimum and maximum input signals. Refer to Amendment 1, plots 1-1 to 1-10 in test report DECRAD_FCC.15558_rev2. Revised test report DECRAD_FCC.15558_rev2 with Amendment 1 was not uploaded on October 22, 2003. Please open the site. Please change the output power appears in grant accordingly (10 W in downlink mode). HERMON LABORATORIES 12) This device is designed for multi-carrier use. Output power test was performed for the single middle channel: one in uplink band and one in downlink band and repeated in multicarrier mode (as shown in section 11 above). 13) Dekolink confirms the typical signals are digital, 16 QAM, multi-carrier, for data and voice. In downlink mode: max level of input signal is –21.9 dBm, min level is –51.6 dBm, in uplink mode: max level of input signal is –31.8 dBm, min level is –60.5 dBm. 14) D7W emission designation – refer to item 13. 15) The test was done according to the test suite confirmed by you on June 10, 2003. 16), 17) – OK. Many thanks for your support and patience. Sincerely, Marina Cherniavsky, certification engineer Hermon Laboratories

FCC ID: OIWBDAESMR50W90 731 Confirmation: TC725243 Ref Number: 11012 Comment 1: Grant has been corrected. Comment 2: The system did not allow us to do this at the time. This has been discussed with George Tannahill to correct. Grant has been corrected Comment 3: The following was provided by the applicant: Regarding compliance with section 90.219, these requirements mostly relate to a licensee and cannot be defined by manufacturer. For example: 90.219(a)- comply refer to operational description; 90.219(b)- ERP should be a license issue as the manufacturer does not provide any specific antenna; 90.219(c)- comply refer to test report: DEKRAD_FCC.15558_rev2, paragraph 4.2; 90.219(d)- license issue, refer also to repeater overview in operational description; 90.219(e)- license issue; 90.219(f)- license issue. Please, let me know if you need something else. Comment 4: Grant has been corrected

FCC ID:OIWBDAESMR50W90 Date: August 2003 Page 1 of 3 EXTERNAL PHOTOGRAPHS This document contains general view photograph and all side views on mechanical drawing FCC ID:OIWBDAESMR50W90 Date: August 2003 Page 2 of 3 Photograph No.1 MW-BDA-ESMR-50W90 high power repeater General view FCC ID:OIWBDAESMR50W90 Date: August 2003 Page 3 of 3 MECHANICAL OUTLINE

Dekolink WIRELESS Ltd. 16 Bazel St. Qiryat-Arieh Petah-Tikva, Israel, 49510 Tel- 972-3-9180-180 Fax-972-3-190-9180 e-mail: [email protected] web www.dekolink.com Page 1 of 1 Label_rev1_15558 FCC ID LABLE for BDA-ESMR-50W90

FCC ID:OIWBDAESMR50W90 Date: September 2003 Page 1 of 12 INTERNAL PHOTOGRAPHS This document contains 11 photographs FCC ID:OIWBDAESMR50W90 Date: September 2003 Page 2 of 12 Photograph No.1 MW-BDA-ESMR-50W90 high power repeater Internal view FCC ID:OIWBDAESMR50W90 Date: September 2003 Page 3 of 12 Photograph No.2 MW-BDA-ESMR-50W90 high power repeater Internal view FCC ID:OIWBDAESMR50W90 Date: September 2003 Page 4 of 12 Photograph No.3 MW-BDA-ESMR-50W90 high power repeater Downlink amplifier FCC ID:OIWBDAESMR50W90 Date: September 2003 Page 5 of 12 Photograph No.4 MW-BDA-ESMR-50W90 high power repeater Uplink amplifier FCC ID:OIWBDAESMR50W90 Date: September 2003 Page 6 of 12 Photograph No.5 MW-BDA-ESMR-50W90 high power repeater Uplink amplifier bottom FCC ID:OIWBDAESMR50W90 Date: September 2003 Page 7 of 12 Photograph No.6 MW-BDA-ESMR-50W90 high power repeater Uplink and downlink pre-amplifier top view FCC ID:OIWBDAESMR50W90 Date: September 2003 Page 8 of 12 Photograph No.7 MW-BDA-ESMR-50W90 high power repeater Uplink and downlink pre-amplifier bottom view FCC ID:OIWBDAESMR50W90 Date: September 2003 Page 9 of 12 Photograph No.8 MW-BDA-ESMR-50W90 high power repeater Base diplexer first side view FCC ID:OIWBDAESMR50W90 Date: September 2003 Page 10 of 12 Photograph No.9 MW-BDA-ESMR-50W90 high power repeater Base diplexer second side view FCC ID:OIWBDAESMR50W90 Date: September 2003 Page 11 of 12 Photograph No.10 MW-BDA-ESMR-50W90 high power repeater Mobile diplexer first side view FCC ID:OIWBDAESMR50W90 Date: September 2003 Page 12 of 12 Photograph No.11 MW-BDA-ESMR-50W90 high power repeater Mobile diplexer second side view

Dekolink WIRELESS Ltd. 16 Bazel St. Qiryat-Arieh Petah-Tikva, Israel, 49510 Tel- 972-3-9180-180 Fax-972-3-190-9180 e-mail: [email protected] web www.dekolink.com AGC function description. Duplexe r Downlink Duplexe r Uplink LNA Attenuator Power Monitor PA AGC LNA Attenuator Power Monitor PA AGC BDA RF BLOCK DIAGRAM TO BASE TO MOBILE VVA VVA AGC FUNCTION The Repeater has AGC function on both paths that serve to prevent the saturation of the power amplifier. When the input signal is low enough the AGC mechanism is not operating and the GAIN is maximum available (according to GAIN setting). When a high signal is received, the AGC circuit detects the amplitude at the output and sends a feedback signal to a Voltage Variable Attenuator(VVA), which attenuates the signal level so that the output power of the amplifier does not exceed the preset limit. The green LED on the BDA monitor (AGC Range) illuminates when the power output of the amplifier is within the set limit. An On/Off switch on the connection box enables the AGC function. If the AGC is disabled then the amplifier gives maximum gain, this mode is for LAB testing purpose only. Page 1 of 1 AGC function description.doc

Page 1 of 10 50W rev 2 - 09/02 Dekolink WIRELESS Ltd. 16 Bazel St. Qiryat-Arieh Petah-Tikva, Israel, 49510 Tel- 972-3-9180-180 Fax-972-3-- e-mail: [email protected] web www.decolink.com PRODUCT DESCRIPTION FOR HIGH POWER REPEATER MODEL: MW-BDA-ESMR-50W90 Page 2 of 10 50W rev 2 - 09/02 Dekolink WIRELESS Ltd. 16 Bazel St. Qiryat-Arieh Petah-Tikva, Israel, 49510 Tel- 972-3-9180-180 Fax-972-3-- e-mail: [email protected] web www.decolink.com TABLE OF CONTENTS PARAGRAPH PAGE No REPEATER OVERVIEW 3 BLOCK DIAGRAM DESCRIPTION 3 REPEATER (BDA) CONNECTION 3 COMPONENT DESCRIPTION 5 LNA+STEP ATTENUATOR 5 DOWNLINK POWER AMPLIFIER 5 AGC FUNCTION 5 BDA MONITOR 6 BDA MONITOR FUNCTIONS 7 LIST OF DRAWINGS DRAWING PAGE No REPEATER(BDA) RF BLOCK DIAGRAM 4 BDA MONITOR 8 BDA MONITOR BLOCK DIAGRAM 8 MECHANICAL LAYOUT 9 MECHANICAL OUTLINE 10 Page 3 of 10 50W rev 2 - 09/02 Dekolink WIRELESS Ltd. 16 Bazel St. Qiryat-Arieh Petah-Tikva, Israel, 49510 Tel- 972-3-9180-180 Fax-972-3-- e-mail: [email protected] web www.decolink.com REPEATER OVERVIEW: The Bi-Directional Repeater assembly provides an exceptional repeater/booster performance to extend the coverage area of radio communications in buildings and RF shielded environments. Features such as high linearity power amplifiers are contributing for the overall improved system linearity performances. The unit is based on a duplexed path configuration, having sharp out of band attenuation for improved isolation between the receiving and transmitting paths. BLOCK DIAGRAM DESCRIPTION: The Repeater Downlink path receives the RF signals from base station, amplifies them and transmits them to the subscriber. The Repeater Uplink path receives the RF signals from the subscriber, amplifies them and transmits them to the base station. Two duplexers frequency separate the signals to the proper amplifying path and isolate the two signals. For each path two amplifiers do the path signal amplification; a low noise amplifier (LNA) and a high power amplifier. The low noise amplifier has a 30 dB step attenuator to set the gain of the specific path. REPEATER (BDA) CONNECTION: The RF connection is made via two type “N” female connectors. The RF connector labeled “Base” is connected to the antenna pointing to the base station, usually a rooftop antenna; this is a directional antenna such as Yagi or Dish antenna of 14 to 18 dBi gain. This antenna is pointed to the base station to get maximum input power. The RF connection labeled “Mobile” must be connected to the antenna pointing into the area to be covered by the Repeater. The remote antenna is usually a directional antenna designated for the coverage requirements. Page 4 of 10 50W rev 2 - 09/02 Dekolink WIRELESS Ltd. 16 Bazel St. Qiryat-Arieh Petah-Tikva, Israel, 49510 Tel- 972-3-9180-180 Fax-972-3-- e-mail: [email protected] web www.decolink.com For indoor applications covering a large building, the RF signals are split using power dividers and distributed to many antennas, usually omni antenna, each covering a floor or a small area. such as inside a building or outdoor shaded area. Duplexer Downlink Duplexer Uplink LNA Attenuator Power Monitor PA AGC LNA Attenuator Power Monitor PA AGC BDA RF BLOCK DIAGRAM TO BASE TO MOBILE Page 5 of 10 50W rev 2 - 09/02 Dekolink WIRELESS Ltd. 16 Bazel St. Qiryat-Arieh Petah-Tikva, Israel, 49510 Tel- 972-3-9180-180 Fax-972-3-- e-mail: [email protected] web www.decolink.com COMPONENETS DESCRIPTION LNA +STEP ATTENUATOR AND RF GAIN SETTING This is a 45dB GAIN unit with a 30 dB step attenuator. The step attenuator is used to reduce the Repeater gain when needed, usually to set proper output power . For proper operation of the Repeater, the isolation between the base station antenna and the mobile antenna should exceed the Repeater gain by at least 12 dB. If the Repeater gain were higher than the isolation between the antennas, oscillation would start and would saturate the amplifier. In this case the repeater’s gain is reduced to the required level. Downlink power amplifier: This is a 50W 1dB compression amplifier operated at 10W composite output power. The power is limited by AGC mechanism to keep system performance. The amplifier uses 28VDC, 4AMP. Typ. Uplink power amplifier: This is a 16W 1dB compression amplifier operated up to 1W composite output power. The power is limited by AGC mechanism to keep system performance. The amplifier uses 28VDC, 1.7 AMP. Typ. AGC FUNCTION The Repeater has AGC function on both paths that serve to prev…

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