Communications: radio wave antennas – Antennas – Spiral or helical type
Patent
1998-11-04
2000-06-06
Wong, Don
Communications: radio wave antennas
Antennas
Spiral or helical type
343853, 343700MS, H01Q 136
Patent
active
060724412
ABSTRACT:
A helical antenna capable of covering a plurality of frequency bands and using a common feeder system for antenna elements adjusted to the respective frequency bands. First and second antenna elements having lengths corresponding to wavelengths of the frequency bands to be used are arranged helically at a specified pitch angle and spaced apart in the circumferential direction of a cylindrical body on the surface of a dielectric sheet wound around the outer circumferential surface of the cylindrical body. Coupling lines to be electromagnetically coupled to one-side ends of the antenna elements being adjacent to one another are formed on the surface of the dielectric sheet. A signal is fed from a common feeder circuit through the coupling lines to the respective antenna elements.
REFERENCES:
patent: 5198831 (1993-03-01), Burrell et al.
patent: 5346300 (1994-09-01), Yamamoto et al.
patent: 5706019 (1998-01-01), Darden, IV et al.
patent: 5828348 (1998-10-01), Tassoudji et al.
Chen Shih-Chao
NEC Corporation
Wong Don
LandOfFree
Method of producing a helical antenna and the helical antenna ap does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Method of producing a helical antenna and the helical antenna ap, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of producing a helical antenna and the helical antenna ap will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-2217166