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引言很多场合下,需要测量微波场振幅和相位.例如,测量微波透镜焦点附近的场、喇叭孔径的场、波导中某处的场、天线附近或反射面天线口面上的场等等.通常大都采用一段传输线与检波接收装置相联接的探针(接收天线)来测取.作为接收天线的探针必须满足:1.有效孔径应很小,并能在每个点取样;2.探针及其联接设备引起的待测场失真应足够小;3.极
For example, measuring the field near the focal point of a microwave lens, the field of a loudspeaker aperture, the field somewhere in a waveguide, the field near the antenna or on the antenna face of a reflecting surface, etc. Normally it is necessary to measure the amplitude and phase of the microwave field Most of the transmission line and the detection receiver connected to the probe (receiving antenna) to be measured as a receiving antenna probe must meet: 1. The effective aperture should be small and can be sampled at each point; 2. Probe And its connected devices caused by the measured field distortion should be small enough;