Invention Grant
US08554267B2 Broadband input frequency adaptive technique for filter tuning and quadrature generation
有权
用于滤波器调谐和正交生成的宽带输入频率自适应技术
- Patent Title: Broadband input frequency adaptive technique for filter tuning and quadrature generation
- Patent Title (中): 用于滤波器调谐和正交生成的宽带输入频率自适应技术
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Application No.: US12647476Application Date: 2009-12-26
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Publication No.: US08554267B2Publication Date: 2013-10-08
- Inventor: Raul Salvi
- Applicant: Raul Salvi
- Applicant Address: US IL Schaumburg
- Assignee: Motorola Solutions, Inc.
- Current Assignee: Motorola Solutions, Inc.
- Current Assignee Address: US IL Schaumburg
- Agent Anthony P. Curtis; Daniel R. Bestor
- Main IPC: H04B1/10
- IPC: H04B1/10 ; H04B1/18 ; H04B1/16
Abstract:
A method for tuning a filter is provided. The amplitude of a first signal (I1) is compared with the amplitude of a comparison signal. The first signal is generated with a first filter, which receives a first input signal, and there is a phase difference between the first signal (I1) and the comparison signal. A tuning signal is then generated based on differences between the amplitudes of the first signal (I1) and the comparison signal. The tuning signal compensates for any phase and/or amplitude offset in the first signal (I1).
Public/Granted literature
- US20110159834A1 BROADBAND INPUT FREQUENCY ADAPTIVE TECHNIQUE FOR FILTER TUNING AND QUADRATURE GENERATION Public/Granted day:2011-06-30
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