Communications: radio wave antennas – Antennas – With grounding structure
Patent
1995-08-24
1996-10-01
Hajec, Donald T.
Communications: radio wave antennas
Antennas
With grounding structure
343745, 343773, 343830, H01Q 148
Patent
active
055614396
ABSTRACT:
An antenna comprises a radiating element and a cone-shaped ground plate the relative distance between which can be altered thus altering the resonant frequency of the antenna and a base. The resulting antenna is a wideband quarter-wave vertical antenna which can be employed for testing in the 1.8 GHz frequency range and for temporary use in all car phones as well as in fixed stations.
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RCA Technical Notes, No. 1337, Nov. 1983, Princeton, U.S. Robert M. Wilson, "Line Cord Antenna With Coaxial Section".
Finnish Office Action dated 17 Sep. 1993, Patent Application No. 925831 English Translation of Finnish Office Action.
Hajec Donald T.
Nokia Mobile Phones Limited
Phan Tho
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