Method and system for an analog zero-IF interface for GSM...

Details Method and system for an analog zero-IF interface for GSM... Method and system for an analog zero-IF interface for GSM...

2011-06-21

2011-06-21

Maung, Nay (Department: 2618)

Telecommunications

Receiver or analog modulated signal frequency converter

Noise or interference elimination

C455S208000, C455S318000, C455S324000, C455S339000

Reexamination Certificate

active

07965994

ABSTRACT:
Certain embodiments for an analog zero-IF interface for GSM receivers, where a receiver may receive RF signals and downconvert the RF signal to a VLIF signal in the analog domain. The VLIF signal may be further downconverted to a baseband signal in the analog domain. The baseband signal may be an analog signal. Aspects of the invention may comprise amplifying the received RF signal, mixing the amplified RF signal down to a VLIF signal, filtering the VLIF signal, amplifying the VLIF signal, mixing the filtered VLIF signal to a baseband signal, and filtering the baseband signal. The local oscillator signal to the mixer that may downconvert the RF signal to a VLIF signal may be an output of a programmable local oscillator, and may be one of a plurality of frequencies. The mixer that generates the baseband signal may be a harmonic-reject mixer.

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