Importance

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Abstract

Methods and systems for wireless communication are disclosed and may include generating first and second signals by band-limiting a received wireless signal in two frequency ranges utilizing programmable bandpass filters. The first and second signals may be undersampled utilizing a clock signal. A delay of the second signal may be coarse-tuned by delaying the undersampling clock signal and may be fine-tuned by delaying the undersampled second signal utilizing a programmable delay line. The delayed, undersampled second signal may be subtracted from the undersampled first signal. A center frequency of the first range may be configured to a desired signal frequency, and a center frequency of the second range may be configured to a blocker signal frequency. The delay line may include an array of CMOS inverters, and may be fine-tuned utilizing programmable capacitors. The bandpass filters may include one or more coplanar waveguide or microstrip bandpass filters.

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First Claim