Communications: radio wave antennas – Antennas – High frequency type loops
Patent
1996-05-02
1997-09-02
Hajec, Donald T.
Communications: radio wave antennas
Antennas
High frequency type loops
343867, 343870, H01Q 1112
Patent
active
056637381
ABSTRACT:
The antenna device has an antenna wire loop which, accompanied by the formation of two electrically outer (1,3) and one electrically central partial loop (2), is twice twisted by in each case 180.degree.. One of the two electrically outer partial loops (3) is geometrically positioned between the electrically central partial loop (2) and the other electrically outer partial loop (1). An impedance element (11) is connected between two connecting points (9,10) located at the entrance and exit of the geometrically central partial loop. The antenna device according to the invention has a very balanced characteristic and in the case of an appropriate choice of its parameters, behaves at the resonant frequency of the tags to be detected in the same way as an antenna with approximately 2 to 21/2 partial loops.
REFERENCES:
patent: 2597518 (1952-10-01), Parks
patent: 4016553 (1977-04-01), Novikoff et al.
patent: 4135183 (1979-01-01), Heltemes
patent: 4243980 (1981-01-01), Lichtblau
patent: 4251808 (1981-02-01), Lichtblau
patent: 4260990 (1981-04-01), Lichtblau
patent: 4633250 (1986-12-01), Anderson, III et al.
patent: 4679046 (1987-07-01), Curtis et al.
patent: 4720701 (1988-01-01), Lichtblau
patent: 4751516 (1988-06-01), Lichtblau
patent: 4859991 (1989-08-01), Watkins et al.
patent: 4866455 (1989-09-01), Lichtblau
patent: 4872018 (1989-10-01), Feltz et al.
patent: 4999641 (1991-03-01), Cordery et al.
patent: 5061941 (1991-10-01), Lizzi et al.
patent: 5345222 (1994-09-01), Davies et al.
Actron Entwicklungs AG
Hajec Donald T.
Ho Tan
LandOfFree
Antenna device does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Antenna device, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Antenna device will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-312576