Title:
ANTENNA EQUIPMENT AND RADIO COMMUNICATION EQUIPMENT
Document Type and Number:
Japanese Patent JP3195882
Kind Code:
B2
Abstract:
PURPOSE: To efficiently mount a loop antenna and a radio communication equipment circuit on a round enclosure.
CONSTITUTION: Two conductor plates 22 which are round and have the diameters sufficiently shorter than the wavelength to be used are so arranged that their planes face each other, and a feed end 23 is set at a point on the outer periphery of two conductor plates, and a short-circuit conductor 24 which is sufficiently shorter than the length of the periphery and shows a sufficiently low reactance for the wavelength to be used is connected to a position most distant from the feed end. Since at least one of conductor plates is cut away with the edge part left, a display end and/or an operation end is easily installed. The radio communication equipment circuit can be mounted in the antenna structure without degrading the antenna gain, and it is miniaturized.
Inventors:
Hitoshi Itakura
Koichi Tsunekawa
Koichi Tsunekawa
Application Number:
JP23922694A
Publication Date:
August 06, 2001
Filing Date:
October 03, 1994
Export Citation:
Assignee:
NTT DoCoMo, Inc.
International Classes:
H01Q1/24; H01Q7/00; H04B1/38; H04B1/3822; (IPC1-7): H01Q7/00; H01Q1/24; H04B1/38
Domestic Patent References:
| JP4329006A |
Attorney, Agent or Firm:
Naotaka Ide (1 person outside)
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