Microstrip line and microwave device using the same

The present invention relates to a microstrip line which is used in consumer microwave receivers for receiving signals of satellite broadcasting, satellite communications and the like, and to a microwave device using the microstrip line. The present invention provides a low cost microstrip line with...

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Bibliographic Details
Main Authors Kamimoto, Ryuichi, Kitamura, Hirokazu, Kirimura, Kazuyuki, Hibino, Yasuhiro
Format Patent
LanguageEnglish
Published 03.09.2002
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Summary:The present invention relates to a microstrip line which is used in consumer microwave receivers for receiving signals of satellite broadcasting, satellite communications and the like, and to a microwave device using the microstrip line. The present invention provides a low cost microstrip line with low loss and a microwave device using the microstrip line. The microstrip line comprises (a) a dielectric substrate for general purpose use with relatively high loss in a microwave frequency, (b) a strip conductor foil disposed on the front surface of the substrate, (c) a metal plate for grounding disposed in contact with the back of the dielectric substrate, and (d) an air layer formed on a portion of the metal plate for grounding, the portion facing to the strip conductor foil.