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Mobile telephone communications filtering technique having carrier frequency first band/received signals second band and power amplifier/receiver with filtering excluding parasitic signal.
Mobile telephone communications filtering technique having carrier frequency first band/received signals second band and power amplifier/receiver with filtering excluding parasitic signal.
The filtering mechanism has a carrier frequency (F0) in a first band of frequencies (Tx) and receiving signals in a second band of frequencies (Rx). The filtering at the receiver excludes the parasitic band whilst allowing amplification of the received signal.
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