Invention Grant
US08644786B2 Receiver apparatus having filters implemented using frequency translation techniques
有权
具有使用频率转换技术实现的滤波器的接收机装置
- Patent Title: Receiver apparatus having filters implemented using frequency translation techniques
- Patent Title (中): 具有使用频率转换技术实现的滤波器的接收机装置
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Application No.: US13613624Application Date: 2012-09-13
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Publication No.: US08644786B2Publication Date: 2014-02-04
- Inventor: Ahmad Mirzaei , Mohyee Mikhemar , Hooman Darabi
- Applicant: Ahmad Mirzaei , Mohyee Mikhemar , Hooman Darabi
- Applicant Address: US CA Irvine
- Assignee: Broadcom Corporation
- Current Assignee: Broadcom Corporation
- Current Assignee Address: US CA Irvine
- Agency: Sterne, Kessler, Goldstein & Fox P.L.L.C.
- Main IPC: H04B1/26
- IPC: H04B1/26

Abstract:
A method and apparatus is disclosed to effectively frequency translate a filter characterized as a low quality factor (Q) filter, corresponding to a baseband frequency of approximately zero Hertz or to an intermediate frequency (IF), to a filter characterized as a high Q filter at frequencies greater than the baseband frequency or the IF. A downconversion mixer frequency translates a communication signal to the baseband frequency or the IF using a first local oscillator signal to provide a downconverted communication signal. A filter corresponding to the baseband frequency or the IF filters the downconverted communication signal to provide a filtered communication signal. An upconversion mixer frequency translates a communication signal using a second local oscillator signal. The frequency translation by the upconversion mixer, in effect, translates the filter characterization from the low Q filter to the high Q filter at frequencies greater than the baseband frequency or the IF.
Public/Granted literature
- US20130070878A1 RECEIVER APPARATUS HAVING FILTERS IMPLEMENTED USING FREQUENCY TRANSLATION TECHNIQUES Public/Granted day:2013-03-21
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