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Title:
BALANCED POWER AMPLIFIER AND HIGH FREQUENCY COMMUNICATION EQUIPMENT
Document Type and Number:
Japanese Patent JP2005086620
Kind Code:
A
Abstract:

To provide a balanced power amplifier having a small distortion compensation circuit with a small number of components and a high frequency communication equipment with the power amplifier.

The balanced power amplifier is equipped with first and second bipolar transistors 106, 107 of emitter grounding which are arranged in parallel, first and second variable impedance elements 108, 109 one ends of which are electrically connected with each base of the first and second bipolar transistors 106, 107, a regulator circuit 112 arranged between the other end of the first variable impedance element 108 and the other end of the second variable impedance element 109, a first resistor 110 which electrically connects between the first variable impedance element 108 and the regulator circuit 112 with a voltage supply means 105 and a second resistor 111 which electrically connects between the second variable impedance element 109 and the regulator circuit 112 with the voltage supply means 105.


Inventors:
AMANO YOSHIHISA
Application Number:
JP2003317957A
Publication Date:
March 31, 2005
Filing Date:
September 10, 2003
Export Citation:
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Assignee:
SHARP KK
International Classes:
H03F3/68; H03F1/32; H03F3/24; H03F3/26; H03F3/45; H03F3/60; H04B1/04; (IPC1-7): H03F1/32; H03F3/24; H03F3/68; H04B1/04
Attorney, Agent or Firm:
Hiroshi Yamazaki
Atsushi Maeda
Yukinori Nakakura