Simple dual-frequency antenna

Details Simple dual-frequency antenna Simple dual-frequency antenna

1998-01-22

2000-10-31

Wong, Don

Communications: radio wave antennas

Antennas

Active sleeve surrounds feed line

343895, 343792, 343725, H01Q 904

Patent

active

061409731

ABSTRACT:
An antenna construction comprises a feed conductor (11, 21) and an antenna element (12, 22, 24, 25, 26, 27) which has a first end and a second end. The feed conductor is substantially electrically unshielded and coupled to the antenna element at a tapping point (13, 23) located between the first end and second end of the antenna element the tapping point dividing the antenna element into two portions having unequal electrical lengths. The antenna element may be a helix (12), a whip (22) or another known two-ended antenna element or a combination of those.

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