[특허]Intermodulation distortion detection in a power shared amplifier network

Intermodulation distortion detection in a power shared amplifier network 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	H03F-003/68 H03F-003/26
출원번호	US-0560450 (1995-11-17)
발명자 / 주소	Gans Michael J. (Holmdel NJ) Yeh Yu S. (Freehold NJ)
출원인 / 주소	Lucent Technologies Inc. (Murray Hill NJ 02)
인용정보	피인용 횟수 : 38 인용 특허 : 0

초록 ▼

An intermodulation distortion (IMD) detection system improves IMD reduction capability of power shared linear amplifier networks. In one embodiment, first and second power sharing networks, preferably Butler Matrices, are provided with a plurality of linear amplifier circuits coupled therebetween. A plurality of input signals are applied to respective input ports of the first power sharing network, with a portion of each input signal amplified by each amplifier circuit and then recombined in the second power sharing network so that each amplified input signal appears at only one output port of the second power sharing network. An antenna coupled to each of these output ports then radiates the amplified signal energy associated with one of the input signals. A test signal, which may be a dual tone signal, is applied to another input port of the first power sharing network, where it is split and amplified by each amplifier circuit. Each amplifier circuit includes detection circuitry for detecting IMD energy of the test signal produced in the amplifier, which is also indicative of the IMD energy generated due to the amplification of the input signals. The amplified test signal is then recombined by the second power sharing network so that it appears only at one output port, where it is terminated.

대표청구항 ▼

An intermodulation distortion (IMD) detection system for use in a power shared amplifier network capable of amplifying at least one input signal, comprising: a first power sharing network having a plurality of first input ports, with at least one of said first input ports receiving at least one associated test signal and with at least one other of said first input ports receiving said at least one input signal, said first power sharing network splitting each of said at least one input signal and said at least one test signal between a plurality of first output ports, thereby producing a composite signal at each said first output port having signal power of said at least one test signal and of said at least one input signal; a plurality of amplifier circuits, each coupled to an associated one of said first output ports and amplifying an associated one of said composite signals; a second power sharing network having a plurality of second input ports coupled to associated ones of said amplifier circuits, and having a plurality of second output ports, for providing amplified signal power of said at least one test signal on at least one associated second output port, and amplified signal power of said at least one input signal on at least one other of said second output ports; and at least one of said amplifier circuits including detection circuitry for detecting IMD product power associated with said at least one test signal.

이 특허를 인용한 특허 (38)

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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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Intermodulation distortion detection in a power shared amplifier network 원문보기

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Intermodulation distortion detection in a power shared amplifier network 원문보기

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이 특허를 인용한 특허 (38)

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