Interdigital transducer, surface acoustic wave filter, and radio communication apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Mar 22, 2005
Issued Date -
N/A
app pub date -
Jun 24, 2004
filing date -
Oct 16, 2001
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
An interdigital transducer has one-wavelength basic units of a single phase unidirectional transducer a plurality of each having three electrode fingers within one wavelength; and a plurality of one-wavelength basic units of a bidirectional electrode each having four electrode fingers within the one wavelength, wherein the one-wavelength basic units are properly arranged according to a desired filter characteristic, and one of the three electrode fingers of each one-wavelength basic unit of the single phase unidirectional transducer is wider than the two other electrode fingers, and of the four electrode fingers of each one-wavelength basic unit of the bidirectional electrode, one pair of two fingers is interdigitated to the other pair of two fingers, and an adjustment section is provided between the one-wavelength basic units of the single phase unidirectional transducer and the one-wavelength basic units of the bidirectional electrode.
First Claim
Family
International Classification(s)
- [Classification Symbol]
- [Patents Count]
Cited Art Landscape
Patent Citation Ranking
Advertisement
Advertisement
Advertisement
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