Electro-mechanical filter including mechanical resonator
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Jan 5, 1982
Grant Date -
N/A
app pub date -
Jun 25, 1979
filing date -
Jul 7, 1978
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An electromechanical filter having mechanical resonators which is used as a channel filter for a mobile radio communication receiver and a carrier telephone. The electromechanical filter is provided with exciter means, each of which is composed of a transducer and an exciter formed as a unitary structure and has the both functions. Each exciter means is a bar-shaped piezoelectric ceramic having a pair of electrodes deposited on its opposing surfaces and subjected to polarization treatment. The exciter means are mechanically coupled by mechanical coupling means with the mechanical resonators.
First Claim
Family
International Classification(s)
Cited Art Landscape
Patent Citation Ranking
Recipient Email Address
Recipient Email Address
Comment
Recipient Email Address
Add to Portfolio(s)
To add this patent to one, or more, of your portfolios, simply click the add button.
This Patent is in these Portfolios:
Add to additional portfolios:
Last Refreshed On:
Changes done successfully