fk0, легенда (09.06.2016 09:42, просмотров: 227) ответил 1111111 на Форма краев полюбому подобрана. Как учили на курсе антенн - "четвертьволновая канавка"
<i>Earlier microwave ovens relied on accurate engineering of the oven door and metal-to-metal contact where the door closed. This type of design allowed higher levels of leakage that increased when the door/oven interface became dirty or http://patentimages.storage.googleapis.com/pages/US3197600-0.png
http://www.google.com/patents/US3197600
distorted. During the 1970s door design changed to incorporate a quarter wavelength choke that effectively created a short circuit at the door/oven interface that prevented any leakage. The use of a quarter wavelength choke did away with the requirement for clean metal-to-metal contact and allowed small gaps at the door interface.
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