Title:
COMMUNICATOR
Document Type and Number:
Japanese Patent JP2018121266
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To suppress occurrence of overshoot while maintaining the quality of transmission radio wave.SOLUTION: A communicator 1 includes a variable gain amplifier 11 for amplifying and outputting a transmission signal, an output detector 14 for detecting the voltage of the transmission signal, and outputting the detection voltage, and a first ALC circuit 15 and a second ALC circuit 16 for controlling the gain of the amplifier 11. The first ALC circuit 15 controls the gain of the amplifier 11 in a direction of reducing the difference between a first voltage according to the detection voltage, and a first threshold level Th1. When a second voltage according to the detection voltage is larger than a second threshold level Th2, the gain of the amplifier 11 is controlled in a direction of reducing the difference between the second voltage and the second threshold level Th2.SELECTED DRAWING: Figure 1
Inventors:
MORISHITA YUTA
NANBA MASANORI
NANBA MASANORI
Application Number:
JP2017012669A
Publication Date:
August 02, 2018
Filing Date:
January 27, 2017
Export Citation:
Assignee:
ICOM INC
International Classes:
H03G3/20; H04B1/04
Attorney, Agent or Firm:
Kimura Mitsuru
Koji Yashima
Tomomi Osaka
Kazuhiro Miyamoto
Koji Yashima
Tomomi Osaka
Kazuhiro Miyamoto
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