Andrew Base Station Subsystems Group 100739THPRM Tri-High Power Radio Module THPRM850 RF100739 User Manual

Andrew Corporation, Base Station Subsystems Group Tri-High Power Radio Module THPRM850 RF100739 Users Manual

Users Manual

RF Power Amplifiers Andrew Corporation – Power Amplifier Group Propriety – Use pursuant to Company Instruction 1 of 6 THPRM NAC 850MHz 60W GMSK 45W EDGE Model: RF100739(RM2 850) /NTQA65JD Doc: PT08004 Operation Instruction Date: September 30, 2008 Version. 1.0 Ref# : FCC ID: S8L-100739THPRM & IC:2237F-100739THPRM
RF Power Amplifiers Andrew Corporation – Power Amplifier Group Propriety – Use pursuant to Company Instruction 2 of 6 1. Introduction This document presents description of the Andrew Corporation 850 NAC Band RM2 Power Amplifier (60W GMSK / 45W EDGE). The RF100739 (RM2 850) amplifier is a medium power, RF amplifier intended to provide signal amplification. The RF100739 (RM2 850) amplifier is compatible with GSM and EDGE air interfaces operating in U.S. domestic cell sites where FCC compliance is mandatory. The RF100739 (RM2 850) power amplifier includes 3 lines of RF amplification (“TX paths”). Each TX path is capable of supporting both GMSK and EDGE standards on the NAC band (869 MHz to 894 MHz). Each TX path is rated for 45W output with EDGE signal, and 60W with GMSK signal. 2. RF100739 (RM2 850) Specifications The RF100739 (RM2 850) provide linear amplification of single-carrier signals in the NAC frequency band. The RF100739 (RM2 850) have the following specifications for each TX path: Parameter Specification Operating RF Band 869-894MHz In band RF gain 44 dB Input signal types GSM or EDGE single carrier Input DC Power 28 VDC +/-1%, nominal DC voltage input range 26VDC to 30.5VDC Rated Output Power @ 28VDC +/-1% & GMSK signal 60W average Rated Output Power @ 28VDC +/-1% & EDGE signal 45W average DC-Power Consumption @ GMSK signal & rated output power 170W (29% Power efficiency) DC-Power Consumption @ EDGE signal & rated output power 150W (20% Power efficiency) Physical dimensions 11.5” x 16.15” x 2.4” Weight < 12.13lbs Cooling technique External cooling when the Amplifier is placed in the customer frame. Temperature Range -5°C to +60°C (heat sink inlet air), meeting specifications. Table 1 RF100739 (RM2 850) Specifications
RF Power Amplifiers Andrew Corporation – Power Amplifier Group Propriety – Use pursuant to Company Instruction 3 of 6 3. Functional Blocks: The Andrew RF100739 (RM2 850) includes 3 lines of RF amplification. Each of them contains the following functional areas: − Power Amplification Line-Up This block gives to the unit its specified gain through 4 amplifier stages: 1 pre-amplification stage, 1 medium power stage, and a final 2-stages power transistor. This power final stage brings the signal to its desired high power level. It is the heart of the RF section of each TX path. The unit power, linearity and efficiency essentially come from this block. − Power Conversion and Conditioning Circuit This block is made of a DC/DC converter and various voltage adapters to do the interface between the customer supply network and the internal functions of the unit. It provides all the voltages and signal interface to the internal blocks of the unit. − Monitoring and Control Circuit Several internal features enable to monitor and control the internal parameters. The signals provided by these circuits could have different nature (current image, voltage image, RF power image, temperature image). All these signals, transmitted through analogical lines, are exchanged with the customer controller circuit through an interface connector (common for the 3 TX paths). It is critical that signals are not interfering prior sent to the customer controller circuit. It means that one transmitting TX must not interfere with other TX analogical lines.
RF Power Amplifiers Andrew Corporation – Power Amplifier Group Propriety – Use pursuant to Company Instruction 4 of 6 4. Block Diagram: See attachment
RF Power Amplifiers Andrew Corporation – Power Amplifier Group Propriety – Use pursuant to Company Instruction 5 of 6 5. Inputs and Outputs: The amplifier is powered from a DC supply voltage, which can range from 26VDC to 30.5VDC. The DC power is brought into the amplifier through a header right angle, 2 pins connector, located on the amplifier motherboard. A 44 pins connector, also located on the amplifier motherboard, is used for analogical lines enabling monitoring and control. This connector is used both during factory tests and at the system level by the customer . The 3 RF input signals are brought into the amplifier through 3 female SMA type connectors located on the amplifier motherboard. The 3 amplified RF signal are brought out of the amplifier through 3 N type connectors. They are located on the face plate of the amplifier. RF100739 (RM2 850) Face plate view 6. Control System: The RF100739 (RM2 850) power amplifier is controlled by the customer logic board, which builds control signals and accepts monitoring signals. This additional board is also responsible for the whole transmitter external digital / analogical interfaces. A controller is used at system level to control the amplifier alarm system (by monitoring temperature and currents for each TX paths) and to compensate the environmental drift (ambient temperature). 7. Installation and Operation Set-Up The RF100739 (RM2 850) is easy to operate and use, only requiring a special cables for DC power and interface connection into the customer frame. RF input and output connections are done with industry standard SMA and N connectors. 3 RF output connectors
RF Power Amplifiers Andrew Corporation – Power Amplifier Group Propriety – Use pursuant to Company Instruction 6 of 6 8. FCC Statements: FCC ID: S8L-100739THPRM This device complies with Part 2, 15 & 22 of the FCC Rules. Operation is subject to the following two conditions: (1) this device may not cause harmful interference and (2) this device must accept any interference received, including interference that may cause undesired operation. IC Information: Trade Name: ANDREW CORP, Tri-High Efficiency Power Amplifier THPRM850 Model No.: RF100739 IC: 2237F-100739THPRM This device complies with RSS-131, RSS-102 of the IC Rules. Warning Changes of modifications not expressly approved by the manufacturer could void the user’s authority to operate the equipments.

Navigation menu