Mobile phone antenna with improved impedance-matching circuit
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United States of America Patent
Stats
-
May 25, 1993
Grant Date -
N/A
app pub date -
May 15, 1992
filing date -
May 15, 1992
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A new antenna structure for a mobile phone mainly comprises an antenna stem, a swivel joint, a high-frequency connector, and an impedance-matching member; the swivel joint includes an antenna-mounting base, a joint-fastening base and an outer protection sleeve; the swivel joint has a very small height in the whole antenna structure; the swivel joint enables the extension antenna stem to turn freely, and to bend for storage and carrying, if necessary. The copper and spring-shaped impedance-matching member and a copper sleeve wall of the high-frequency connector form into an impedance-matching circuit; the impedance-matching member is made of a standard parts without test and adjustment so as to facilitate the assembling operation thereof, and to provide a stable reception function.
First Claim
Family
International Classification(s)
Cited Art Landscape
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