Antenna device for portable equipment
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
May 26, 1998
Grant Date -
N/A
app pub date -
May 24, 1995
filing date -
Oct 29, 1992
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
The antenna device of the present invention is intended for a portable equipment for transmitting and/or receiving radio signals. Said antenna device comprises a helical antenna substantially having the characteristics of a half-wave antenna, a half-wave antenna, and an impedance transformer. Said helical antenna, said half-wave antenna, and said impedance transformer are intercouplable so that either said helical antenna alone is coupled to said impedance transformer or said helical antenna and said half-wave antenna are coupled in parallel to said impedance transformer in order to form two different working functions.
First Claim
Family
International Classification(s)
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