Title:
POWER AMPLIFIER AND TRANSMISSION OUTPUT CORRECTING METHOD
Document Type and Number:
WIPO Patent Application WO/2019/026769
Kind Code:
A1
Abstract:
Provided are a power amplifier and a transmission output correcting method, which can suppress the effects of ringing in a transmission intermittent section and limit a transmission output to a specified level or less, and thereby achieve stable observation. The power amplifier and the transmission output correcting method are configured such that, when a prohibited frequency band is included in a chirp signal, an amplification element 12 amplifies the chirp signal attenuated by an attenuator 11 and transmits the amplified chirp signal as a transmission signal; a power detection unit 13 detects transmission output power; when detecting, on the basis of the detected power, an intermittent section in which the transmission output stops, a control unit 14 sets, for the attenuator 11, a first attenuation value greater than the attenuation value during initiation of radar observation; and an attenuation operation is performed using a first attenuation quantity until a first period of time elapses.
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Inventors:
KUWABARA MASAMICHI (JP)
UCHIMURA TAKEHISA (JP)
UCHIMURA TAKEHISA (JP)
Application Number:
PCT/JP2018/028122
Publication Date:
February 07, 2019
Filing Date:
July 26, 2018
Export Citation:
Assignee:
HITACHI INT ELECTRIC INC (JP)
International Classes:
H03G3/12; G01S7/35; G01S13/34; H03G1/04
Domestic Patent References:
| WO2006051948A1 | 2006-05-18 |
Foreign References:
| JP2000312119A | 2000-11-07 | |||
| JP2006304367A | 2006-11-02 | |||
| US20020097093A1 | 2002-07-25 | |||
| JP2012173209A | 2012-09-10 |
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