A low-loss SAW-TV-IF filter with an extended impedance matching range.

A low-loss SAW-TV-IF filter with an extended impedance matching range. Research Abstract Details 

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A low-loss SAW-TV-IF filter with an extended impedance matching range. Abstract Text:

J Yamada,Y Fujita,T Shiba,T Toyama,

A novel low-loss SAW (surface acoustic wave) filter for an intermediate frequency (IF) circuit in a color TV receiver has been developed. It consists of an apodized bidirectional and an unapodized group-type unidirectional transducer. The unidirectional transducer is designed to use different numbers of finger pairs in sending and reflecting electrodes for extension of the impedance-matching range. A thin-film capacitor for use as a phase shifter is monolithically fabricated on a 128 degrees Y-X LiNbO(3) substrate. A low insertion loss (11.3 dB) and impedance matching without adjustment are achieved at the same time without increasing the device chip size or number of electrical parts.

A low-loss SAW-TV-IF filter with an extended impedance matching range. Publishing Authors By Initials

J Yamada,Y Fujita,T Shiba,T Toyama,

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A low-loss SAW-TV-IF filter with an extended impedance matching range. Journal Published:

PUBLICATION TYPE: Journal Article

Journal: IEEE transactions on ultrasonics, ferroelectrics,

VOLUME: 35

Page Numbers: 668-72

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ISSN: 0885-3010

DAY: 21

MONTH: 02

YEAR: 1988

A low-loss SAW-TV-IF filter with an extended impedance matching range. Information

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LANGUAGE: eng

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AFFILIATION: Hitachi Ltd., Yokohama.

Country: United States

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MEDLINETA: IEEE Trans Ultrason Ferroelect

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