Invention Grant
- Patent Title: CORDIC based complex tuner with exact frequency resolution
- Patent Title (中): 基于CORDIC的复杂调谐器具有精确的频率分辨率
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Application No.: US13550975Application Date: 2012-07-17
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Publication No.: US08406348B2Publication Date: 2013-03-26
- Inventor: Arthur Thomas Gerald Fuller , Bradley John Morris
- Applicant: Arthur Thomas Gerald Fuller , Bradley John Morris
- Applicant Address: US CA Cupertino
- Assignee: Apple Inc.
- Current Assignee: Apple Inc.
- Current Assignee Address: US CA Cupertino
- Agency: Meyertons, Hood, Kivlin, Kowert & Goetzel, P.C.
- Main IPC: H04L27/06
- IPC: H04L27/06

Abstract:
Systems and methods are disclosed that include selecting a sampling frequency and a tuning resolution frequency. These systems and methods may further include determining a wordlength of the phase accumulator, a numeric representation of the phase range, and a reduced representable value of a phase accumulator. In addition, these systems and methods may include operating the phase accumulator, where the phase accumulator creates an output phase accumulator signal. These systems and methods may further includes adjusting the angle of the output phase accumulator signal, where the output phase accumulator signal is adjusted based upon the operation of the phase accumulator, where adjusting the angle of the output phase accumulator signal creates an adjusted output phase accumulator signal and operating a CORDIC module, and where the CORDIC module performs operations upon the output phase accumulator signal based upon the parameters of the phase accumulator.
Public/Granted literature
- US20120281793A1 CORDIC Based Complex Tuner with Exact Frequency Resolution Public/Granted day:2012-11-08
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