The microstrip patch antenna is composed of a dielectric substrate, a floor, a patch conductor layer, etc., and is usually fed by a microstrip line (side feeding) or a coaxial line (back feeding). Thi...
Ultrasonic signal (1M) frequency and power control issues1. If the working frequency of the ultrasonic chip/ceramic chip is 1.7M, what methods are there to keep the frequency error at ±10%?2. By detec...
[i=s] This post was last edited by bqgup on 2021-8-23 19:43 [/i] #I'm addicted to C language! Please help me read "Number Processing and Judgment" ##Problem description##My code ``` cpp #include
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[b] [size=2][color=rgb(68, 68, 68)][font=Tahoma, "][font=微软雅黑][img]http://www.miractech.com/Upload/20151123001626niNF.jpg[/img] Start: 1. Problem: According to the company's after-sales service depart...