Title:
ANTENNA FOR MOBILE RADIO SYSTEM
Document Type and Number:
Japanese Patent JP3185442
Kind Code:
B2
Abstract:
PURPOSE: To provide a small sized magnetic current type antenna used for a mobile radio station.
CONSTITUTION: A groove 104 is formed to a ground plane 103, a winding coil type antenna 203 is inserted in the groove 104 so that its antenna axis is in parallel with the ground plane 103 and a part between one end of the winding coil type antenna 203 and the ground plane 103 is used for a feeding point 102. The height of the antenna 203 is selected to be the diameter of the antenna 203 or below and the structure that the antenna 203 is supported by the groove 104 and not easily moved is attained, then the fluctuation in the resonance frequency is less and the input impedance is kept high.
Inventors:
Koichi Ogawa
Banuki Ueno
Toshio Sekiguchi
Banuki Ueno
Toshio Sekiguchi
Application Number:
JP2226693A
Publication Date:
July 09, 2001
Filing Date:
February 10, 1993
Export Citation:
Assignee:
Matsushita Electric Industrial Co., Ltd
International Classes:
H01Q11/08; H04B7/10; H04B7/26; (IPC1-7): H01Q11/08; H04B7/10
Domestic Patent References:
| JP4262629A | ||||
| JP6392103A | ||||
| JP1146613U |
Attorney, Agent or Firm:
Fumio Iwahashi (2 others)