Abstract: We have proposed a method to focus an ultrasonic beam transmitted from piezoelectric micromachined ultrasonic transducer (pMUT) array based on the principle of phase-type Fresnel Zone Plate ...
Abstract: This paper presents a 4-element X-band multi-function chip(MFC) based on SiGe technology, which includes RF switches, low noise amplifier, power amplifier driver, attenuator, phase shifter, ...
一些您可能无法访问的结果已被隐去。
显示无法访问的结果
反馈