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Patent Searching and Data


Title:
POWER AMPLIFIER
Document Type and Number:
WIPO Patent Application WO/2017/203571
Kind Code:
A1
Abstract:
Provided are a wire (4) for which one end is connected to the output terminal of a transistor (3); a transmission line (5) for which one end is connected to the other end of the wire (4); a wire (8) for which one end is connected to the other end of the transmission line (5); a transmission line (9) for which one end is connected to the other end of the wire (8); a transmission line (11) for which one end is connected to the other end of the transmission line (9), and the other end is connected to an output terminal (14); and a short circuit point forming circuit (15) that forms a short circuit point for a second order harmonic of a high frequency signal, the configuration being such that the transistor (3) has capacitive output impedance, and the relative dielectric constant of a circuit board (19) on which the transmission line (5) is formed is lower than the relative dielectric constant of a circuit board (20) on which the transmission line (9) is formed.

Inventors:
KAWAMURA, Yoshifumi (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
HANGAI, Masatake (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
YAMANAKA, Koji (7-3 Marunouchi 2-chome, Chiyoda-k, Tokyo 10, 〒1008310, JP)
Application Number:
JP2016/065187
Publication Date:
November 30, 2017
Filing Date:
May 23, 2016
Export Citation:
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Assignee:
MITSUBISHI ELECTRIC CORPORATION (7-3 Marunouchi 2-chome, Chiyoda-ku Tokyo, 10, 〒1008310, JP)
International Classes:
H03F3/60; H03F3/68
Attorney, Agent or Firm:
TAZAWA, Hideaki et al. (Akasaka Sanno Center Bldg. 5F, 12-4 Nagata-cho 2-chome, Chiyoda-k, Tokyo 14, 〒1000014, JP)
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