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1. (WO2019026769) POWER AMPLIFIER AND TRANSMISSION OUTPUT CORRECTING METHOD
Latest bibliographic data on file with the International Bureau    Submit observation

Pub. No.: WO/2019/026769 International Application No.: PCT/JP2018/028122
Publication Date: 07.02.2019 International Filing Date: 26.07.2018
IPC:
H03G 3/12 (2006.01) ,G01S 7/35 (2006.01) ,G01S 13/34 (2006.01) ,H03G 1/04 (2006.01)
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
G
CONTROL OF AMPLIFICATION
3
Gain control in amplifiers or frequency changers
02
Manually-operated control
04
in untuned amplifiers
10
having semiconductor devices
12
incorporating negative feedback
G PHYSICS
01
MEASURING; TESTING
S
RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
7
Details of systems according to groups G01S13/, G01S15/, G01S17/127
02
of systems according to group G01S13/58
35
Details of non-pulse systems
G PHYSICS
01
MEASURING; TESTING
S
RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
13
Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
02
Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
06
Systems determining position data of a target
08
Systems for measuring distance only
32
using transmission of continuous unmodulated waves, amplitude-, frequency- or phase-modulated waves
34
using transmission of frequency-modulated waves and the received signal, or a signal derived therefrom, being heterodyned with a locally-generated signal related to the contemporaneous transmitted signal to give a beat-frequency signal
H ELECTRICITY
03
BASIC ELECTRONIC CIRCUITRY
G
CONTROL OF AMPLIFICATION
1
Details of arrangements for controlling amplification
04
Modifications of control circuit to reduce distortion caused by control
Applicants:
株式会社日立国際電気 HITACHI KOKUSAI ELECTRIC INC. [JP/JP]; 東京都港区西新橋二丁目15番12号 15-12, Nishi-shimbashi 2-chome, Minato-ku, Tokyo 1058039, JP
Inventors:
桑原 正道 KUWABARA, Masamichi; JP
内村 豪寿 UCHIMURA, Takehisa; JP
Priority Data:
2017-14997902.08.2017JP
Title (EN) POWER AMPLIFIER AND TRANSMISSION OUTPUT CORRECTING METHOD
(FR) AMPLIFICATEUR DE PUISSANCE ET PROCÉDÉ DE CORRECTION DE SORTIE D'ÉMISSION
(JA) 電力増幅器及び送信出力補正方法
Abstract:
(EN) 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.
(FR) L'invention concerne un amplificateur de puissance et un procédé de correction de sortie d'émission, permettant de supprimer les effets d'oscillation dans une section intermittente d'émission et de limiter une sortie d'émission à un niveau déterminé ou inférieur, d'où une observation stable. L'amplificateur de puissance et le procédé de correction de sortie d'émission sont configurés de telle sorte que, quand une bande de fréquences interdite est comprise dans un signal chirp, un élément d'amplification (12) amplifie le signal chirp atténué par un atténuateur (11) et émet le signal chirp amplifié en tant que signal d'émission; une unité de détection de puissance (13) détecte une puissance de sortie d'émission; sur détection, en fonction de la puissance détectée, d'une section intermittente dans laquelle la sortie d'émission s'arrête, une unité de commande (14) définit une première valeur d'atténuation de l'atténuateur (11) supérieure à la valeur d'atténuation lors de l'initialisation d'une observation radar; et une opération d'atténuation est effectuée à l'aide d'une première quantité d'atténuation jusqu'à ce qu'une première période de temps s'écoule.
(JA) 送信間欠区間におけるリンギングの影響を抑制し、送信出力を規定レベル内に抑えて、安定した観測を実現できる電力増幅器及び送信出力補正方法を提供する。 チャープ信号に禁止周波数帯が含まれる場合に、増幅素子12が、減衰器11で減衰されたチャープ信号を増幅して送信信号として出力し、電力検出部13が送信出力電力を検出し、制御部14が、検出された電力に基づいて送信出力が停止する間欠区間を検知すると、減衰器11に、レーダ観測開始時の減衰値より大きい第1の減衰値を設定して、第1の期間が経過するまで第1の減衰量で減衰動作を行わせる電力増幅器及び送信出力補正方法としている。
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Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BN, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DJ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IR, IS, JO, JP, KE, KG, KH, KN, KP, KR, KW, KZ, LA, LC, LK, LR, LS, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PA, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SA, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW
African Regional Intellectual Property Organization (ARIPO) (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, ST, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Office (AM, AZ, BY, KG, KZ, RU, TJ, TM)
European Patent Office (EPO) (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, KM, ML, MR, NE, SN, TD, TG)
Publication Language: Japanese (JA)
Filing Language: Japanese (JA)