Wideband jammer detector,申请号US200912582090-传众专利搜索

Wideband jammer detector

申请公布号：US8838017(B2)

申请号：US200912582090

申请日期：2009.10.20

申请公布日期：2014.09.16

申请人：

QUALCOMM Incorporated

发明人：Muthali Harish S.;Sen Shreyas

分类号：H04K3/00;H03F1/48;H03F1/08;H04B1/7097;H04B1/10

主分类号：H04K3/00

代理人：Cheatham Kevin T.

地址：San Diego CA US

摘要：Techniques for detecting jammer signals in a received signal are described. In one aspect, high-speed current mirror resistive compensation circuits and output impedance boosting circuits are utilized to increase amplifier bandwidth in an improved wideband amplifier circuit. In another aspect, a dual transistor configuration including common source topology, averaging capacitors and a comparator circuit is utilized to improve the sensing of signal peaks in a peak detector block, which can be used together with the wideband amplifier circuit and a digital jammer detection circuit to detect jammer signals. The digital jammer detection circuit aids in the determination of the presence of jammer signals within the received signal, the determination of which may be variable due to programmability of the digital jammer detection circuit as described.

主权项：1. A peak detector block comprising: a first transistor, a second transistor, a first capacitor, a second capacitor and a comparator circuit, wherein: a gate terminal of the first transistor is coupled to a signal input; a source terminal of the first transistor is coupled to a first power source; a drain terminal of the first transistor is coupled to a first terminal of the first capacitor and a first input terminal of the comparator circuit; a second terminal of the first capacitor is coupled to a ground source; a gate terminal of the second transistor is coupled to the signal input; a source terminal of the second transistor is coupled to the ground source; a drain terminal of the second transistor is coupled to a first terminal of the second capacitor and a second input terminal of the comparator circuit, wherein the comparator circuit is configured to compare a first signal provided to the first input terminal of the comparator to a first threshold signal and to compare a second signal provided to the second input terminal of the comparator to a second threshold signal; and a second terminal of the second capacitor is coupled to the ground source.