Antenna device and portable radio terminal

Details Antenna device and portable radio terminal Antenna device and portable radio terminal

2007-05-08

2007-05-08

Ho, Tan (Department: 2821)

Communications: radio wave antennas

Antennas

With radio cabinet

C343S895000

Reexamination Certificate

active

11150256

ABSTRACT:
An antenna device capable of being applied to a portable radio terminal and showing a good antenna characteristic regardless of the direction, and a portable radio terminal provided with the antenna device. The antenna device applied to a portable radio terminal whose housing length is equal to or more than λ/4 with respect to the wavelength λ of transmission-reception signals comprises an antenna element disposed on one end of the housing in the longitudinal direction in which at least one point of one end is connected to a signal wiring pattern on a substrate and the other end is an open end, and a parasitic element disposed on the same side of the housing as the antenna element in which one point of one end is connected to a ground wiring on the substrate and the other end is an open end, wherein the open end of the antenna element and the open end of the parasitic element are approximated to each other and capacity coupled.

REFERENCES:
patent: 5583521 (1996-12-01), Williams
patent: 5966097 (1999-10-01), Fukasawa et al.
patent: 6657595 (2003-12-01), Phillips et al.
patent: 6765536 (2004-07-01), Phillips et al.
patent: 6876331 (2005-04-01), Chiang et al.
patent: 2005/0110692 (2005-05-01), Andersson
patent: 62-161410 (1987-10-01), None
patent: 2004-56319 (2004-02-01), None
patent: WO 03/092118 (2003-11-01), None
patent: WO 2004/025778 (2004-03-01), None

Affiliated with

Also associated with

Rating

Antenna device and portable radio terminal does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Antenna device and portable radio terminal, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Antenna device and portable radio terminal will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3797323