Communications: radio wave antennas – Antennas – Slot type
Reexamination Certificate
2005-07-12
2005-07-12
Ho, Tan (Department: 2821)
Communications: radio wave antennas
Antennas
Slot type
C343S769000, C343S7000MS
Reexamination Certificate
active
06917342
ABSTRACT:
The invention relates to a device for receiving and/or transmitting electromagnetic signals comprising three annular slots (20, 21, 22) which are tangent in pairs at two points P1and P2. These slots are supplied by two supply lines (23, 24) so as to produce a line/slot transition. One of the lines23passes through the point P1while the other line24passes through the point P2, the two lines being connected via a T-shaped junction at a common port1. A diode25or26is mounted at the free end of each line, making it possible to simulate a short circuit or an open circuit at the end of one of the lines and an open circuit or a short circuit at the end of the other line.
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Patent Abstracts of Japan, vol. 015, No. 148, Apr. 15, .
K. Hirose et al “Dual-Loop Slot Antenna with Simple Feed”, Electronics Letters, IEE Stevenage, vol. 25, No. 18, Aug. 13, 1989, pp. 1218-1219.
Bolzer Francoise Le
Louzir Ali
Minard Philippe
Thudor Franck
Ho Tan
Laks Joseph J.
Shedd Robert D.
Thomson Licensing S.A.
Tripoli Joseph S.
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