Wave transmission lines and networks – Long line elements and components – Strip type
Patent
1981-04-28
1982-10-05
McCarthy, Helen M.
Wave transmission lines and networks
Long line elements and components
Strip type
330307, 333 35, 361321, 501137, 501138, H01P 100, C04B 3549
Patent
active
043530478
ABSTRACT:
The present invention provides a dielectric material adapted for microwave integrated circuits (MIC) and an electric circuit making use of said dielectric material. More particularly, an oxide dielectric material principally consisting of (1-x)BaO.xTiO.sub.2 (0.7.ltoreq.x.ltoreq.0.95) and containing both 0.007 to 0.7 weight % of manganese and 0.037 to 3.7 weight % of zirconium, has a large dielectric constant, a small dielectric loss and a small temperature coefficient of dielectric constant and is uniform over a broad range, and especially it is possible to easily manufacture a substrate having a uniform dielectric constant and a uniform dielectric loss. Transistors and MIC's employing such substrates can attain uniform and excellent high-frequency characteristics.
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Kajiwara Yuji
Noguchi Tsutomu
Suzuki Masanori
Takamizawa Hideo
McCarthy Helen M.
Nippon Electric Co. Ltd.
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