Dual frequency antenna system

Details Dual frequency antenna system Dual frequency antenna system

2008-07-18

2010-11-30

Wimer, Michael C (Department: 2821)

Communications: radio wave antennas

Antennas

Microstrip

C343S895000

Reexamination Certificate

active

07843392

ABSTRACT:
A dual-frequency conformal multi-filiar helical antenna system (20) provides a low-profile, low drag antenna useable in flying equipment. This antenna system (20) securely holds within its shell (22) signal distribution circuitry (64), signal combining circuitry (68), and any other circuit components necessary for antenna system (20) to communicate with other stations or devices. Antenna system (20) has radiating conductors (24, 32) tuned to two different frequencies such that simultaneous transmission and reception of signals is possible in the same and opposite directions.

REFERENCES:
patent: 4014028 (1977-03-01), Cone et al.
patent: 4847627 (1989-07-01), Knight
patent: 5581268 (1996-12-01), Hirshfield
patent: 5854608 (1998-12-01), Leisten
patent: 6011524 (2000-01-01), Jervis
patent: 6212413 (2001-04-01), Kiesi
patent: 6545649 (2003-04-01), Seavey
patent: 7113148 (2006-09-01), Lan et al.
patent: WO98028817 (1998-07-01), None

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