Title:
RECEIVING ANTENNA DEVICE
Document Type and Number:
WIPO Patent Application WO/1999/017460
Kind Code:
A1
Abstract:
A receiving antenna device for a receiver to be mounted on a radio-controlled model. This receiving antenna device enables an accurate tuning to be obtained, even the position of the installation of the receiver, the routing of an antenna line, or the like is a little different from the one initially aimed at (that is, the one as designed), in the assembly work of the radio-controlled model. A microcomputer (6) conforms the resonance frequency of a resonance circuit to the received frequency by capturing the intensity (R1) of a received signal from a receiver (4) where a resonance output is inputted, from an A/D converter (5), while controlling the capacities of variable capacity diodes (2 and 3) which form the above resonance circuit by being connected to a loop antenna (1), with a DC voltage (Vc) for control from a D/A converter (7), and determining the DC voltage (Vc) for control the time of the intensity (R1) of the received signal becoming maximum, and fixing the capacities of the variable capacity diodes (2 and 3) with this DC voltage (Vc) for control.
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Inventors:
MATSUI TAKAHIRO (JP)
Application Number:
PCT/JP1997/004566
Publication Date:
April 08, 1999
Filing Date:
December 11, 1997
Export Citation:
Assignee:
WELLPINE COMMUNICATIONS CO LTD (JP)
MATSUI TAKAHIRO (JP)
MATSUI TAKAHIRO (JP)
International Classes:
A63H30/04; H01Q1/24; H01Q1/32; H01Q7/00; H01Q23/00; H03J1/00; H04B1/18; (IPC1-7): H04B1/18; A63H30/04; H01Q7/00; H01Q23/00; H03J1/14; H04Q9/00
Foreign References:
| JPH04243327A | 1992-08-31 | |||
| JPS60180112U | 1985-11-29 | |||
| JPS648820U | 1989-01-18 | |||
| JPS6126338U | 1986-02-17 | |||
| JPH0448827A | 1992-02-18 | |||
| JPH0964771A | 1997-03-07 |
Attorney, Agent or Firm:
Handa, Chikao (New State Menor 23-1, Yoyogi 2-chom, Shibuya-ku Tokyo 151, JP)
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