Communications: radio wave antennas – Antennas – Microstrip
Reexamination Certificate
2005-09-06
2005-09-06
Chen, Shih-Chao (Department: 2821)
Communications: radio wave antennas
Antennas
Microstrip
C343S840000
Reexamination Certificate
active
06940457
ABSTRACT:
A multifrequency antenna comprising a stack of nonconductive substantially planar substrates, with a conductive layer disposed on each substrate surface. A first substrate includes transmission lines disposed on a rear surface and a conducting layer on the other surface. A second substrate is stacked on the first substrate. A conducting layer is disposed on one side of the second substrate surface. Conducting layers disposed on first and second substrates include a plurality of slotted openings arrayed about an antenna axis. A third substrate stacked on the second substrate includes a conducting layer top. A lossy dielectric-magnetic material encloses sides and rear of the multifrequency antenna, to prevent electromagnetic energy penetration through the enclosure. An edge diffraction suppresser reflector is attached in the rear surface of the multifrequency antenna, and has two or more essentially circular, conducting plates and a multitude of conducting cylinders along the axis of the multifrequency antenna.
REFERENCES:
patent: 4827271 (1989-05-01), Berneking et al.
patent: 4847625 (1989-07-01), Dietrich et al.
patent: 5025264 (1991-06-01), Stafford
patent: 5241321 (1993-08-01), Tsao
patent: 5448250 (1995-09-01), Day
patent: 5635942 (1997-06-01), Kushihi et al.
patent: 5861848 (1999-01-01), Iwasaki
patent: 5945950 (1999-08-01), Elbadawy
patent: 6054953 (2000-04-01), Lindmark
patent: 6100855 (2000-08-01), Vinson et al.
patent: 6191740 (2001-02-01), Kates et al.
patent: 6208309 (2001-03-01), Chandler et al.
patent: 6278407 (2001-08-01), Ashjaee et al.
patent: 6326923 (2001-12-01), Shigihara
patent: 6445354 (2002-09-01), Kunysz
patent: 6452560 (2002-09-01), Kunysz
patent: 6480170 (2002-11-01), Langley et al.
patent: 6492947 (2002-12-01), Anderson
patent: 6549167 (2003-04-01), Yoon
patent: 6552685 (2003-04-01), Zhang
patent: 6606061 (2003-08-01), Wong et al.
patent: 2002/0080072 (2002-06-01), Zhang
patent: 2003/0103006 (2003-06-01), Yamada
patent: 2004/0036645 (2004-02-01), Fujieda et al.
Proceeding of ION Sep. 2003.
Filippov, V. et al., “The First Dual-Depth Dual-Frequency Choke Ring,” Proceedings of ION, Sep. 1998.
Gao, S. et al, “A Broad-Band Dual-Polarized Microstrip Patch Antenna With Aperture Coupling,” IEEE Transactions on Antenna Propagation, vol. 51, No. 4, Apr. 2003, pp. 898-900.
Klefenz, F. et al, “Aperture-coupled stacked microstrip antenna with dual polarization and low back-radiation for X-band SAR applications,” Radio and Wireless Conference, 2000. RAWCON 2000, Sep. 2000, pp. 179-182.
Lo, Y. T. et al., “Theory and Experiment on Microstrip Antennas,” IEEE Transactions on Antennas and Propagation, vol. 27, No. 2, Mar. 1979, pp. 137-145.
Lee Y. et al., “Multiband L5 Capable GPS Antenna,” Proceedings of ION, Sep. 2003.
Pozar, M. et al. , “A Dual-Band Circularly Polarized Aperture-Coupled Stacked Microstrip Antenna for Global Positioning Satellite,” IEEE Transactions on Antennas and Propagation, vol. 45, No. 11, Nov. 1997, pp. 1618-1625.
Targonski, S. D. et al., “An aperture coupled stacked patch antenna with 50% bandwidth,” Antennas and Propagation Society International Symposium, 1996. AP-S. Digest, Jul. 1996, pp. 18-21.
Targonski, S. D. et al., “Design of Wide-Band Aperture-Stacked Patch Microstrip Antennas,” IEEE Transactions on Antennas and Propagation, vol., 46, No. 9, Sep. 1998, pp. 1245-1251.
Targonski, S. D. et al., “Wideband aperture coupled microstrip patch array with backlobe reduction,” Electronics Letters, vol. 33, No. 24, Nov. 1997, pp. 2005-2006.
Wang, J. et al., “Multifunctional Aperture Coupled Stacked Antenna,” Antennas and Propagation Society International Symposium, 1991. AP-S. Digest, Jun. 24-28, 1991, pp. 727-730.
Ganguly Suman
Lee Yoon-jae
Mittra Raj
Center for Remote Sensing, Inc.
Chen Shih-Chao
David Newman Chrtd.
Vy Hung Tran
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