Communications: radio wave antennas – Antennas – Microstrip
Patent
1995-06-07
1997-01-14
Wimer, Michael C.
Communications: radio wave antennas
Antennas
Microstrip
343833, 343846, H01Q 138, H01Q 2100
Patent
active
055944558
ABSTRACT:
A bidirectional printed antenna includes a dielectric substrate (33) having first and second surfaces which are substantially in parallel, at least one pair of radiation element conductors (31, 32) having the same shape and the same size, each pair of which is arranged on the first and second surfaces at positions opposing with each other, respectively, a feeding circuit (34, 35, 36, 37) coupled to at least one edge of each of the radiation element conductors, and a ground conductor (37) arranged on the second surface. The ground conductor (37) covers at least an area outside of the edge of the radiation element conductor, which edge is coupled to the feeding circuit, and an area outside of the opposite edge with respect to the radiation element conductor by leaving a gap of a predetermined width between the radiation element conductor and this ground conductor. The antenna further includes a first strip conductor (34, 35) arranged on the first surface and connected to the radiation element conductor (31) on the first surface, and a second strip conductor (36) arranged on the second surface, for connecting the radiation element conductor (32) on the second surface with the ground conductor. The above-mentioned feeding circuit includes an unbalanced feed line which consists of the ground conductor (37) and the first strip conductor (35), and a balanced feed line which consists of the first and second strip conductors (34, 36).
REFERENCES:
patent: 4899164 (1990-02-01), McGrath
"Broadband Circularly Polarized Microstrip Array Antenna with Coplanar Feed", Hori et al, Electronics and Communications in Japan, Part 1, vol. 69, No. 11, 1986, pp. 76-83 No month.
Microstrip Antennas, Bahl et al, Artech House, USA, pp. 1-84 No date.
Cho Keizo
Hori Toshikazu
Nippon Telegraph & Telephone Corporation
Wimer Michael C.
LandOfFree
Bidirectional printed 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 Bidirectional printed antenna, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Bidirectional printed antenna will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1391567