Handset with electromagnetic bra

Details Handset with electromagnetic bra Handset with electromagnetic bra

2005-02-28

2008-11-25

Nguyen, Hoang V (Department: 2821)

Communications: radio wave antennas

Antennas

With radio cabinet

C343S7000MS, C343S846000

Reexamination Certificate

active

07456792

ABSTRACT:
The present invention relates to a handset and generally of any handheld device, which includes an antenna for receiving and transmitting electromagnetic wave signals. More in particular, the invention is related to handsets of the clamshell or flip-phone type. An electromagnetic bra structure is introduced to correct the position of the lobes of the handheld radiation pattern, so that the radiation and sensitivity of the hand held device is increased in the horizontal plane or generally to the other desired directions. The electromagnetic bra structure comprises at least one conducting surface arranged over at least one side of a ground plane of the handset, so that a resonance circuit having a high impedance at an operating frequency of the antenna is establish, to block currents and electromagnetic fields from entering a region of the ground plane.

REFERENCES:
patent: 4504834 (1985-03-01), Garay et al.
patent: 4518968 (1985-05-01), Hately et al.
patent: 5347291 (1994-09-01), Moore
patent: 6100855 (2000-08-01), Vinson et al.
patent: 6191751 (2001-02-01), Johnson
patent: 6314273 (2001-11-01), Matsuda et al.
patent: 6421016 (2002-07-01), Phillips et al.
patent: 6426722 (2002-07-01), Sievenpiper et al.
patent: 6456249 (2002-09-01), Johnson et al.
patent: 6483480 (2002-11-01), Sievenpiper et al.
patent: 6483481 (2002-11-01), Sievenpiper et al.
patent: 6518931 (2003-02-01), Sievenpiper
patent: 6538621 (2003-03-01), Sievenpiper et al.
patent: 6552696 (2003-04-01), Sievenpiper et al.
patent: 6670921 (2003-12-01), Sievenpiper et al.
patent: 6670932 (2003-12-01), Diaz et al.
patent: 6690327 (2004-02-01), McKinzie, III et al.
patent: 6774866 (2004-08-01), McKinzie, III et al.
patent: 2001/0033250 (2001-10-01), Keilen et al.
patent: 2003/0071763 (2003-04-01), McKinzie et al.
patent: 2003/0142036 (2003-07-01), Wilhelm et al.
patent: 2003/0174092 (2003-09-01), Sullivan et al.
patent: 2004/0037052 (2004-02-01), Wu et al.
patent: 1067627 (2001-01-01), None
patent: 1172884 (2002-01-01), None
patent: 1 403 960 (2004-03-01), None
patent: 2112579 (1983-07-01), None
patent: WO-9839814 (1998-09-01), None
patent: 9950929 (1999-10-01), None
patent: WO-01/22528 (2001-03-01), None
patent: WO-01/54225 (2001-07-01), None
patent: 02087012 (2002-10-01), None
patent: WO-02/084784 (2002-10-01), None
patent: WO-03/023900 (2003-03-01), None
patent: WO-03026064 (2003-03-01), None
patent: WO-04/001894 (2003-12-01), None
Lindberg, Peter et al, “A Bandwidth Enhancement Technique for Mobile Handset Antennas Using Wavetraps”, IEEE Transactions on Antennas and Propagation, vol. 54, No. 8, Aug. 2006, pp. 2226-2233.
Icheln, Use of balun chokes in small-antenna radiation measurements, IEEE Transactions on Instrumentation and Measurement, Apr. 2004, vol. 53, No. 2.
Kivekas, Design of high-efficiency antennas for mobile communications devices, Helsinki University of Technology, Aug. 2005.
Zhang, L. et al. Blindness free phased array design using PCB materials, IEEE Tranasactions on Antennas and Propagation, Aug. 2004, vol. 52, No. 8.

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