Title:
MICROWAVE POWER AMPLIFIER
Document Type and Number:
Japanese Patent JPH06120748
Kind Code:
A
Abstract:
PURPOSE: To obtain a power amplifier that has a bias configuration with a good dynamic efficiency and is operated linearly under an effective class B bias. CONSTITUTION: This microwave amplifier is applicable to a multiplex beam phase antenna array system. A bias means connecting to a base of a microwave transistor(TR) (MWT) responds to a high-frequency signal input from a terminal 6 to regulate automatically a bias level, so as to keep a gain of the amplifier constant. The bias means is provided with two voltage regulators 1, 2 and the outputs are capacitively coupled with each other via a resistor 4 with a resistance, depending on a characteristic of the microwave TR. The base of the microwave TR is connected to the bias means at a connection section between the TR and a capacitor coupler of one voltage regulator. A high efficient system is obtained under an effective class B bias (nonlinear bias), in the operating mode of the power amplifier.
Inventors:
UIISUROO JIYAN TONDORIKU
Application Number:
JP19259592A
Publication Date:
April 28, 1994
Filing Date:
July 21, 1992
Export Citation:
Assignee:
MATRA MARCONI SPACE UK LTD
International Classes:
G01S7/282; H03F1/02; H03F1/30; H03F3/19; G01S7/28; H03F3/20; H03F3/60; H03G1/04; (IPC1-7): H03F3/60; G01S7/28; G01S7/282; H03F3/20
Attorney, Agent or Firm:
Minoru Nakamura (6 outside)