Invention Grant
- Patent Title: Integrated cancellation circuit for RF converter spurious tones
- Patent Title (中): 用于RF转换器杂散音的集成消除电路
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Application No.: US12555355Application Date: 2009-09-08
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Publication No.: US08135372B2Publication Date: 2012-03-13
- Inventor: Thomas E. Collins, III , Douglas S. Jansen
- Applicant: Thomas E. Collins, III , Douglas S. Jansen
- Applicant Address: US NH Nashua
- Assignee: BAE Systems Information and Elecronic Systems Integration Inc.
- Current Assignee: BAE Systems Information and Elecronic Systems Integration Inc.
- Current Assignee Address: US NH Nashua
- Agency: Finch & Maloney PLLC
- Agent Neil F. Maloney; Daniel J. Long
- Main IPC: H04B1/10
- IPC: H04B1/10 ; H04K3/00

Abstract:
Techniques are disclosed for eliminating or otherwise sufficiently suppressing spurious signals. The techniques are particularly useful in applications such as those that employ aggressor frequency sources along with a frequency conversion or mixing function, and especially applications implemented as a system-on-chip. In the spur-training mode, a spur-canceller circuit identifies spurious tones associated with the host system to neutralize those tones when running in a normal mode. The tones are neutralized using a comb generator with variable phase and gain by way of cancellation with comb output signals having substantially the same amplitude and a phase that is 180° out of phase with the aggressor tone to be cancelled.
Public/Granted literature
- US20110059714A1 Integrated Cancellation Circuit for RF Converter Spurious Tones Public/Granted day:2011-03-10
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