Communications: radio wave antennas – Antennas – Spiral or helical type
Patent
1990-12-13
1992-09-08
Wimer, Michael C.
Communications: radio wave antennas
Antennas
Spiral or helical type
343872, H01Q 136
Patent
active
051462354
ABSTRACT:
A helical UHF transmitting and/or receiving antenna for electromagnetic waves in the frequency range of between 400 MHz and 1000 MHz. The helical antenna is arranged within a closed housing which is permeable to HF radiation. The UHF signal is supplied to an end of the helical antenna through a coaxial connector. The helix of the antenna has at least one and a half turns but not more than ten turns. Diameter, height and total length of the antenna wire are very small in comparison to the wave length. A mechanically-operated device permits a continuous change of the height of the antenna helix in axial direction thereof or of the diameter transversely of the antenna axis.
REFERENCES:
patent: 2993204 (1961-07-01), Macalpine
patent: 3510872 (1970-05-01), Mullaney
patent: 3524193 (1970-08-01), Auletta
patent: 3699585 (1972-10-01), Morrison
patent: 3737912 (1973-06-01), Cribb
patent: 3836979 (1974-09-01), Kurland et al.
patent: 4068238 (1978-01-01), Acker
patent: 4087820 (1978-05-01), Henderson
patent: 4169267 (1979-09-01), Wong et al.
patent: 4214246 (1980-07-01), Arechavala
patent: 4427984 (1984-01-01), Anderson
patent: 4442438 (1984-04-01), Siwiak et al.
patent: 4475111 (1984-10-01), Gittinger et al.
patent: 4495503 (1985-01-01), Morman
patent: 4935747 (1990-06-01), Yuichi et al.
"Antennas" by John D. Kraus, Ph. D., McGraw Hill Book Company, 1950, chapter 7, pp. 173-216.
AKG Akustische u. Kino-Gerate Gesellschaft m.b.H.
Le Hoang-anh
Wimer Michael C.
LandOfFree
Helical UHF transmitting and/or receiving antenna does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Helical UHF transmitting and/or receiving antenna, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Helical UHF transmitting and/or receiving antenna will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-137000