发明申请
- 专利标题: Protection for SAW-Less Receivers
- 专利标题(中): 无SAW接收器的保护
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申请号: US12481702申请日: 2009-06-10
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公开(公告)号: US20100317311A1公开(公告)日: 2010-12-16
- 发明人: Ahmad MIRZAEI , Hooman DARABI , Yuyu CHANG
- 申请人: Ahmad MIRZAEI , Hooman DARABI , Yuyu CHANG
- 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
- 主分类号: H04B1/10
- IPC分类号: H04B1/10
摘要:
Embodiments of a SAW-less RF receiver front-end that includes a frequency translated notch filter (FTNF) are presented. An FTNF includes a passive mixer and a baseband impedance. The baseband impedance includes capacitors that form a low-Q band-stop filter. The passive mixer is configured to translate the baseband impedance to a higher frequency. The translated baseband impedance forms a high-Q notch filter and is presented at the input of the FTNF. The FTNF can be fully integrated in CMOS IC technology (or others, e.g., Bipolar, BiCMOS, and SiGe) and applied in wireless receiver systems including GSM, EDGE, Wideband Code Division Multiple Access (WCDMA), Bluetooth, and wireless LANs (e.g., IEEE 802.11). In addition, embodiments of an apparatus to protect SAW-less RF receiver front-ends are presented.