GSM 900 MHz RF Amplifier/Bandpass Filter Teardown

Tower Mounted Amplifier filter (TMA) for use in mobile base station antenna masts comprising three TMA filter functions, two reception path filters (RX1, RXext) separated by a low noise amplifier (LNA) and one transmission path filter (TXF), implemented by means of coaxial resonator cavities.

ICs are Anaren Xinger II XC0900A-03 coupler useable up to 225 Watt.

Up/Downconversion explained:
SAW filters explained:
Ceramic bandpass filter explained:

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