Title:
RADIO COMMUNICATION DEVICE AND METHOD OF CONTROLLING ANTENNAS
Document Type and Number:
WIPO Patent Application WO/2001/022621
Kind Code:
A1
Abstract:
A radio section (103) multiplies modulated transmission signals (A-D) by carriers of frequencies (fA-fD), respectively, for frequency conversion, and outputs the converted signals to a switch (104). The switch (104) switches the connections between frequency converters (fA-fD) of the radio section (103) and antennas (A-D). A timing control section (105) outputs a timing control signal to a switch control section (107) at time intervals preset in a timer (106). The switch control section (107) controls the switch (104) according to switching patterns, which indicate the correspondence between the antennas (A-D) and the frequency converters (fA-fD), preset in a switching pattern memory (108).
Inventors:
AIZAWA JUNICHI (JP)
KATO OSAMU (JP)
UESUGI MITSURU (JP)
AKIYAMA KEN (JP)
KATO OSAMU (JP)
UESUGI MITSURU (JP)
AKIYAMA KEN (JP)
Application Number:
PCT/JP2000/006339
Publication Date:
March 29, 2001
Filing Date:
September 18, 2000
Export Citation:
Assignee:
MATSUSHITA ELECTRIC IND CO LTD (JP)
AIZAWA JUNICHI (JP)
KATO OSAMU (JP)
UESUGI MITSURU (JP)
AKIYAMA KEN (JP)
AIZAWA JUNICHI (JP)
KATO OSAMU (JP)
UESUGI MITSURU (JP)
AKIYAMA KEN (JP)
International Classes:
H01Q21/28; H04B1/04; H04B7/06; H04B7/12; H01Q3/24; H04J3/00; (IPC1-7): H04B7/26; H04B7/02; H04B7/12; H04J1/00
Foreign References:
| JPH0548511A | 1993-02-26 | |||
| JPH1051365A | 1998-02-20 | |||
| JPH10209932A | 1998-08-07 | |||
| JPH10112694A | 1998-04-28 | |||
| JPH0690204A | 1994-03-29 | |||
| JPH0355938A | 1991-03-11 |
Attorney, Agent or Firm:
Washida, Kimihito (Shintoshicenter Bldg. 24-1 Tsurumaki 1-chome Tama-shi, Tokyo, JP)
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