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RF Power Amplifiers
Multiple Carrier Power Amplifiers
Model: MCPA1900 & MCPA850
Operation Instruction
Date: July 25, 2005
Version. 1.0
Ref# RE: FCC ID S8L-100254MCPA &
RE: FCC ID S8L-100270MCPA
Andrew Corporation – Power Amplifier Group
Propriety – Use pursuant to Company Instruction
1 of 8
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Summary of Contents for Andrew MCPA1900
- Page 1 Multiple Carrier Power Amplifiers Model: MCPA1900 & MCPA850 Operation Instruction Date: July 25, 2005 Version. 1.0 Ref# RE: FCC ID S8L-100254MCPA & RE: FCC ID S8L-100270MCPA Andrew Corporation – Power Amplifier Group Propriety – Use pursuant to Company Instruction 1 of 8...
- Page 2 RF Power Amplifiers Introduction This document presents description of the Andrew Corporation 850/1900 Band MCPA (Multi-Carrier Power Amplifier) amplifiers. The MCPA amplifier is a high power, mixed-mode RF amplifier intended to provide signal amplification. The MCPA amplifier is compatible with GSM/EDGE and WCDMA air interfaces operating in U.S. domestic cell sites where FCC compliance is mandatory.
- Page 3 The MCPA is designed to track amplitude and phase over all environmental conditions such that the units may be used in a parallel configuration Functional Blocks: The Andrew MCPA is comprised of the following functional areas: − Preamplifier with unit gain and phase control − Feed-Forward amplifier circuit −...
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Page 4: Control System
Fan Tray Interface Figure 1 MSA1900-135 MCPA Front Panel DC/Control/RF input Connector 24W7 Combo D-Sub RF Output Connector Type N Figure 2 MSA1900-135 Rear Panel Andrew Corporation – Power Amplifier Group Propriety – Use pursuant to Company Instruction 4 of 8... - Page 5 LED behavior, as indicated. Additionally, the alarms are mapped to the discrete line relays and available at the D-Sub connector at the rear of the PA Module. Andrew Corporation – Power Amplifier Group Propriety – Use pursuant to Company Instruction 5 of 8...
- Page 6 Shut down must happen fairly quickly (20-100 mS tentative) to avoid tripping the circuit breakers and to avoid RF device failure. This Andrew Corporation – Power Amplifier Group Propriety – Use pursuant to Company Instruction...
- Page 7 There is no recovery short of a reset or power cycle. This is typically a hard failure; however, self-test will be repeated on the next restart command or power cycle. Andrew Corporation – Power Amplifier Group Propriety – Use pursuant to Company Instruction 7 of 8...
- Page 8 Warning Changes of modifications not expressly approved by the manufacturer could void the user’s authority to operate the equipments. Andrew Corporation – Power Amplifier Group Propriety – Use pursuant to Company Instruction 8 of 8...