Spiral coil loaded short wire antenna

Details Spiral coil loaded short wire antenna Spiral coil loaded short wire antenna

2008-05-27

2009-12-29

Phan, Tho G (Department: 2821)

Communications: radio wave antennas

Antennas

Spiral or helical type

C343S719000, C343S745000

Reexamination Certificate

active

07639203

ABSTRACT:
A antenna (10) comprises a straight stem portion (11) and a spiral coiled portion (12) for providing the necessary length, but being compact enough for assembly in a pit tube (23) of a transmitter assembly (20) for subsurface enclosures for fluid meters.

REFERENCES:
patent: 2850732 (1958-09-01), Altoonian et al.
patent: 4137534 (1979-01-01), Goodnight
patent: 6239753 (2001-05-01), Kado et al.
patent: 2003/0227422 (2003-12-01), Berry et al.
patent: 2007/0247380 (2007-10-01), Borleske et al.

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