- 专利标题: Printed bandpass filter for a double conversion tuner
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申请号: US10994633申请日: 2004-11-23
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公开(公告)号: US07071798B2公开(公告)日: 2006-07-04
- 发明人: Ramon A. Gomez , Lawrence M. Burns , Sung-Hsien Chang , Carl W. Pobanz
- 申请人: Ramon A. Gomez , Lawrence M. Burns , Sung-Hsien Chang , Carl W. Pobanz
- 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: Sterne, Kessler, Goldstein & Fox PLLC
- 主分类号: H01P7/00
- IPC分类号: H01P7/00 ; H01P1/20
摘要:
A printed bandpass filter is mounted on a precision substrate to eliminate the need for post-fabrication tuning. The filter input is capacitively coupled to a series of quarter wavelength resonators and the filter output. The quarter wavelength resonators are printed as spirals to reduce filter size. The resonators define the bandpass characteristics of the filter. The filter also weakly couples the input signal to the filter output in a manner to cancel the signal image. Mechanical clips mitigate thermal stress on solder connections when the precision substrate is mounted on a second printed circuit board.
公开/授权文献
- US20050093661A1 Printed bandpass filter for a double conversion tuner 公开/授权日:2005-05-05
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