Title:
TORUS TYPE MICROSTRIP ANTENNA
Document Type and Number:
Japanese Patent JPH06104629
Kind Code:
A
Abstract:
PURPOSE: To obtain the microstrip antenna in common use for transmission and reception.
CONSTITUTION: An annular conductor plate 1 is formed on an upper face of a dielectric body 2, a ground plate 3 is formed to a rear side, and plural diodes 12-14 are provided along an inner or an outer circumference between the torus conductor plate 1 and the ground plate 3. Then the resonance frequency is varied by short-circuiting or opening the diodes 12-14, the one resonance frequency is used for the transmission and the other resonance frequency is used for the reception to allow one antenna to be used for transmission and reception.
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Inventors:
ONO NOBORU
Application Number:
JP27801992A
Publication Date:
April 15, 1994
Filing Date:
September 22, 1992
Export Citation:
Assignee:
SONY CORP
International Classes:
H01Q3/00; H01Q5/10; H01Q13/08; (IPC1-7): H01Q13/08; H01Q3/00; H01Q5/01
Attorney, Agent or Firm:
Yoshio Inamoto