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公开(公告)号:US20050032485A1
公开(公告)日:2005-02-10
申请号:US10942486
申请日:2004-09-16
申请人: Thomas Bachman , Robert Kooker , Paul White , Paul Everline , Robert Snyder , David January , Leonard Sarver , Philip Shenenberger
发明人: Thomas Bachman , Robert Kooker , Paul White , Paul Everline , Robert Snyder , David January , Leonard Sarver , Philip Shenenberger
CPC分类号: H03F1/3229
摘要: A feed forward power amplifier system and method identify active channels across a frequency band to suppress unwanted intermodulation distortion (IMD) products in a communications signal such as a single- or multi-carrier communications signal. A scanning receiver identifies at least one active channel in a frequency band, and identifies at least one portion of the frequency band likely to include IMD products based upon the identified active channel(s). Based upon the identified portion of the frequency band, IMD products are suppressed from the communications signal, e.g., by controlling the magnitude and/or phase of a suppression signal mixed with the communications signal.
摘要翻译: 前馈功率放大器系统和方法识别跨频带的有源信道,以抑制诸如单载波或多载波通信信号的通信信号中的不必要的互调失真(IMD)产物。 扫描接收机识别频带中的至少一个有效信道,并且基于所识别的活动信道来识别可能包括IMD产品的频带的至少一部分。 基于所识别的频带部分,例如通过控制与通信信号混合的抑制信号的幅度和/或相位来抑制IMD产物从通信信号。