Patent ID: 8045592
Filing Date: 2011-10-25
Classification: H01P

Abstract:
1. An antenna multiplexer comprising: a first input configured to receive a communication signal from and transmit a communication signal to a world cell antenna operable for use with AMPS/GSM850, GSM900, GSM1800, PCS/GSM1900, and UMTS/AWS communication signals; a second input configured to receive a satellite signal from a satellite antenna; a first notch filter coupled to the first input and configured to limit the satellite signal from passing to the world cell antenna; a second notch filter coupled to the second input and configured to limit the received and transmitted communication signals from passing to the satellite antenna; an output configured to output a combined signal including the communication signals and the satellite signal; a first matching circuit configured to adjust an output impedance of the multiplexer; a second matching circuit coupled between the second input and the second notch filter and configured to match an impedance of the satellite antenna to a filter impedance of the second notch filter; and a third matching circuit coupled between the first notch filter and the second notch filter and configured to match a second notch filter output to a first filter output; wherein the antenna multiplexer is operable via DC phantom power provided to the antenna multiplexer through the output.