发明授权
US07979044B2 Method and system for utilizing undersampling and/or a digital delay line to remove out-of-band blocker signals
有权
用于利用欠采样和/或数字延迟线去除带外阻断信号的方法和系统
- 专利标题: Method and system for utilizing undersampling and/or a digital delay line to remove out-of-band blocker signals
- 专利标题(中): 用于利用欠采样和/或数字延迟线去除带外阻断信号的方法和系统
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申请号: US11864720申请日: 2007-09-28
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公开(公告)号: US07979044B2公开(公告)日: 2011-07-12
- 发明人: Ahmadreza Rofougaran , Maryam Rofougaran
- 申请人: Ahmadreza Rofougaran , Maryam Rofougaran
- 申请人地址: US CA Irvine
- 专利权人: Broadcom Corporation
- 当前专利权人: Broadcom Corporation
- 当前专利权人地址: US CA Irvine
- 代理机构: McAndrews, Held & Malloy, Ltd.
- 主分类号: H04B1/10
- IPC分类号: H04B1/10 ; H04B1/26
摘要:
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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