TRANSMISSION OUTPUT CONTROL SYSTEM - KOKUSAI DENKI ENGINEERING KK

Title:

TRANSMISSION OUTPUT CONTROL SYSTEM

Document Type and Number:

Japanese Patent JP2002271214

Kind Code:

A

Abstract:

To avoid a drawback in that a user is forced to interrupt transmission during transmitting, due to temperature rise caused by self-heating in a small high-power transmitter/receiver.

In a transmission output control system, in which the output level of a transmitting power amplifier 5 is detected by an output detector 4, and the detected level is compared with the reference level by an error amplifier 6 to control a transmission output so that the difference between the levels is reduced, a reference input is varied according to the detected temperature on a high-frequency output circuit board of the amplifier 5. The transmission output level is lowered, when the temperature is high, and is returned to the original output, when the temperature falls.

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Inventors:

YANAGIHARA TATSUJI
ISHIGOOKA TSUKASA
NARITA TAKAHIRO
ODAKA CHOICHIRO
ITO TADASHI

Application Number:

JP2001064394A

Publication Date:

September 20, 2002

Filing Date:

March 08, 2001

Export Citation:

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Assignee:

KOKUSAI DENKI ENGINEERING KK

International Classes:

H03G3/20; H03G3/30; H04B1/04; (IPC1-7): H04B1/04; H03G3/20; H03G3/30

Attorney, Agent or Firm:

Otsuka Manabu

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