Communications: radio wave antennas – Antennas – Slot type
Reexamination Certificate
2006-04-18
2006-04-18
Lee, Wilson (Department: 2821)
Communications: radio wave antennas
Antennas
Slot type
Reexamination Certificate
active
07030825
ABSTRACT:
A wide-bandwidth aperture antenna is constructed of two parallel metal plates51, 52, each having a resonant aperture53, 54. The apertured plates are arranged parallel to one another, with the apertures aligned. A third plate57is arranged parallel to the apertured plates to act as a reflector. The resonant apertures are in the form of squares with rounded corners. Feed stubs55and56are arranged between the apertured plates and project into the region between the apertures to excite orthogonally polarized modes. The feed stubs are in the form of strips which are aligned in planes perpendicular to the planes of the apertured plates. An exemplary embodiment has a bandwidth of 1700 MHz to 3300 MHz, containing the bands used for GSM 1800, UMTS, UMTS+, Bluetooth and WLAN systems. The feed is high-impedance and the decoupling better than −11 dB over the whole bandwidth.
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Haeng-Lyul Lee, et al., “Broadband Planar Antenna Having Round Corner Rectangular Wide Slot,”IEEE Antennas and Propagation Society International Symposium, (Jun. 16-21, 2002), NY, NY, vol. 1 of 4, pp. 460-463.
European Search Report.
Fischer Georg
Pivit Florian
Cao Huedung X.
Lee Wilson
Lucent Technologies - Inc.
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