本文提出了在蝶形缝隙天线后附加反射结构来实现宽波束单向辐射的方法。
A method to realize wide beam in ultra wide band by introducing a reflect structure is proposed in this paper.
本实用新型涉及一种双极式超声波换能器，它由紧固件、反射板、压电晶体、单向输出板、振荡放大电路等组成。
The utility model relates to a two-polarity ultrasonic transducer, composed of a fastener, a reflecting plate, a piezocrystal, a sound direction output plate, and an oscillation amplifying circuit.
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