Side-by-side coil-fed antenna for a portable radio

Details Side-by-side coil-fed antenna for a portable radio Side-by-side coil-fed antenna for a portable radio

1997-02-19

1998-09-15

Le, Hoanganh T.

Communications: radio wave antennas

Antennas

Spiral or helical type

343702, H01Q 124, H01Q 136

Patent

active

058085866

ABSTRACT:
Multiple helical coils (110, 120, 130) are placed side-by-side and coupled to a conductive straight portion (140) of an antenna to provide a multi-band antenna structure. The helical coils (110, 120, 130) are distanced from one another to sufficiently eliminate coupling interference therebetween. A portable radio capable of communication in many different frequency bands utilizing a single, compact antenna structure is thus realized.

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J. Holland, "Multiple Feed Antenna: Covers L, S, and C Band Segments", Microwave Journal, Oct. 1981, pp. 82-85.

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