Abstract:
A radar system includes a transmit antenna for transmitting a first RF signal, a receive antenna for receiving a second RF signal, and a receiver circuit coupled to the receive antenna for processing the second RF signal and comprising a video amplifier having a temperature compensating attenuator. A radar receiver includes an RF amplifier, a down-converter and a video amplifier comprising a temperature compensating attenuator. The RF amplifier has an input terminal adapted to receive an RF signal and an output terminal at which an amplified RF signal is provided. The down-converter has an input terminal coupled to the output terminal of the RF amplifier and an output terminal at which a lower frequency signal is provided. The video amplifier has an input terminal coupled to the output terminal of the down-converter and an output terminal at which a filtered signal is provided.
Abstract:
본 발명은 근거리 물체 감지(NOD) 시스템에 관한 것으로, 이러한 시스템은 다수의 센서를 포함하며, 각각의 센서는 사전설정 커버리지 영역내 감지 커버리지를 제공하고, 각각의 센서는 제 1 RF 신호를 송신하기 위한 송신 안테나, 제 2 RF 신호를 수신하기 위한 수신 안테나 및 NOD 시스템내 다수의 센서 사이에 정보를 공유하는 수단을 포함한다.
Abstract:
본 발명은 적응성 항법 제어 시스템에 관한 것으로, 감지 영역이 자동차의 전방에 전개되도록 위치하는 무선(RF) 주파수 송수신(TR) 센서 모듈(간단히 "센서")을 포함한다. 센서는 RF 신호를 방출 또는 송신하기 위한 송신 안테나 및 송신 안테나의 시야내 하나 이상의 물체에 의해 차단되어 수신 안테나로 반사되는 송신된 RF 신호의 수신부를 위한 수신 안테나를 포함하는 센서 안테나를 포함한다.
Abstract:
복합 빔 어레이 안테나 시스템은 부틀러 매트릭스 형성 네트워크(86)에 연결되어 있는 스트립라인-패드 개방 종단형 웨이브가이드로부터 제공되는 다수의 방사 구성요소(82)를 포함하고 있다. 상기 부틀러 매트릭스 빔 형성 네트워크는 스위치형 빔 결합 회로(90)에 연결되어 있다. 상기 안테나는 단일 저온 동시소성 세라믹(LTCC)회로로서 제작될 수 있다.
Abstract:
An antenna element is described which has at least one radiator layer disposed over a feed circuit layer. The radiator has a first ground plane disposed thereon and the feed circuit layer has a second ground plane disposed thereon. A conductive path couples the first and second ground plane layers to provide a cavity in the radiator and feed circuit layers. The cavity may be formed by embedded vias which provide a continuous conductive path between the first and second ground plane layers. A cover layer disposed over the radiator layer may function to tune the antenna element. The radiator layers may be provided from a low temperature co-fired ceramic substrate. Apertures in the radiator layers may be used to match an impedance of the antenna element to a predetermined impedance.
Abstract:
A radar detection process includes computing a derivative of an FFT output signal to detect an object within a specified detection zone. In one embodiment, a zero crossing in the second derivative of the FFT output signal indicates the presence of an object. The range of the object is determined as a function of the frequency at which the zero crossing occurs. Also described is a detection table containing indicators of the presence or absence of an object within a respective radar beam and processing cycle. At least two such indicators are combined in order to detect the presence of an object within the detection zone and with changing range gates in each of the antenna beams the coverage of the detection zone can be varied.
Abstract:
A radar detection process includes computing a derivative of an FFT output signal to detect an object within a specified detection zone. In one embodiment, a zero crossing in the second derivative of the FFT output signal indicates the presence of an object. The range of the object is determined as a function of the frequency at which the zero crossing occurs. Also described is a detection table containing indicators of the presence or absence of an object within a respective radar beam and processing cycle. At least two such indicators are combined in order to detect the presence of an object within the detection zone and with changing range gates in each of the antenna beams the coverage of the detection zone can be varied.
Abstract:
A radar detection process includes computing a derivative of an FFT output signal to detect an object within a specified detection zone. In one embodiment, a zero crossing in the second derivative of the FFT output signal indicates the presence of an object. The range of the object is determined as a function of the frequency at which the zero crossing occurs. Also described is a detection table containing indicators of the presence or absence of an object within a respective radar beam and processing cycle. At least two such indicators are combined in order to detect the presence of an object within the detection zone and with changing range gates in each of the antenna beams the coverage of the detection zone can be varied.
Abstract:
A radar detection process includes computing a derivative of an FFT output signal to detect an object within a specified detection zone. In one embodiment, a zero crossing in the second derivative of the FIT output signal indicates the presence of an object. The range of the object is determined as a function of the frequency at which the zero crossing occurs. Also described is a detection table containing indicators of the presence or absence of an object within a respective radar beam and processing cycle. At least two such indicators are combined in order to detect the presence of an object within the detection zone and with changing range gates in each of the antenna beams the coverage of the detection zone can be varied.
Abstract:
A radar detection process includes computing a derivative of an FFT output signal to detect an object within a specified detection zone. In one embodiment, a zero crossing in the second derivative of the FFT output signal indicates the presence of an object. The range of the object is determined as a function of the frequency at which the zero crossing occurs. Also described is a detection table containing indicators of the presence or absence of an object within a respective radar beam and processing cycle. At least two such indicators are combined in order to detect the presence of an object within the detection zone and with changing range gates in each of the antenna beams the coverage of the detection zone can be varied.