Multiple bands type antenna and method for producing the same
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United States of America Patent
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Nov 7, 2006
Grant Date -
Nov 3, 2005
app pub date -
Jun 25, 2002
filing date -
Jun 25, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
The present invention relates to a multiple band-type antenna and method of producing the same. In the present invention, a connector member formed by cutting a cylindrical metallic rod and a first helical antenna are integral through a connection member. A space forming an impedance transformer is formed at the connection member for thereby widening a band region based on a series inductance effect. A helical antenna and a whip antenna are additionally installed at a center of the dielectric surrounding the inner and outer sides of the first helical antenna and the connection member for thereby enhancing an efficiency of the antenna by overcoming the unbalance problems encountered in the conventional art.
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