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1. 发明专利

JPH03139021A MICROWAVE BAND RECEIVER MODULE 失效
公开(公告)号：JPH03139021A
公开(公告)日：1991-06-13
申请号：JP27589589
申请日：1989-10-25
申请人： MITSUBISHI ELECTRIC CORP
发明人： KUNUGI MASARU
IPC分类号： H04B1/10 , H04B1/16
摘要： PURPOSE:To miniaturize the module by amplifying an input signal with less noise. CONSTITUTION:A signal from an RF input terminal 1 is amplified with less noise by a gain controlled low noise amplifier 3A. Then the signal is converted into a local signal from a terminal 4 by an image rejection mixer 4 and outputted via an IFA 5. In such a case, a driver circuit 10A controls the gain of the amplifier 3A in response to the input level.

2. 发明专利

JP2005057599A Multi-stage high output amplifier 有权
标题翻译：多级高输出放大器
公开(公告)号：JP2005057599A
公开(公告)日：2005-03-03
申请号：JP2003287993
申请日：2003-08-06
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： MORI KAZUTOMI , OTSUKA HIROSHI , SAKAI YUJI , MORIMOTO TAKAO , KUNUGI MASARU , SUEMATSU KENJI , TAKAGI SUNAO
IPC分类号： H03F3/68 , H03F1/32 , H03G3/10 , H03G3/30
摘要： PROBLEM TO BE SOLVED: To obtain low distortion in high order distortion characteristics and efficient characteristics in a multi-stage high output amplifier.
SOLUTION: In the multi-stage high output amplifier, the drain (collector) voltage of at least one driver stage amplifier is operated with a voltage lower than a normal operation voltage to bring about gain compression from a lower output level, and thus ≥2.5dB gain compression at 1dB backoff can be obtained to reduce high order (5th-order, 7th-order, and 9th-order) distortions.
COPYRIGHT: (C)2005,JPO&NCIPI
摘要翻译：要解决的问题：在多级高输出放大器中获得高阶失真特性和有效特性的低失真。解决方案：在多级高输出放大器中，至少一个驱动级放大器的漏极（集电极）电压以低于正常工作电压的电压工作，从较低的输出电平引起增益压缩，因此可以获得1dB退避时的≥2.5dB增益压缩，以减少高阶（5阶，7阶和9阶）失真。版权所有（C）2005，JPO＆NCIPI

3. 发明专利

JP2002290159A FEED-FORWARD AMPLIFIER 失效
公开(公告)号：JP2002290159A
公开(公告)日：2002-10-04
申请号：JP2001085878
申请日：2001-03-23
申请人： MITSUBISHI ELECTRIC CORP
发明人： HORIGUCHI KENICHI , NAKAYAMA MASATOSHI , IKEDA YUKIO , ISHIDA OSAMI , OKAMURA ATSUSHI , FUJISAKA TAKAHIKO , CHIBA ISAMU , URASAKI SHUJI , MORISHITA KEIJI , YASUNAGA YOSHINORI , KUNUGI MASARU
IPC分类号： H03F1/32
摘要： PROBLEM TO BE SOLVED: To secure the convergence and stability of control in a distortion- detecting circuit. SOLUTION: A setting value change amount calculator 51 obtains the corelation between the signal component of a digitized input signal and a distortion component, comprising a residual signal component fed from a digitized distortion detecting circuit 1 and calculates the residual signal component, which is contained in the distortion component. The calculated residual signal component is multiplied by a correction coefficient, which contributes to the convergence and stability of control in the distortion detecting circuit 1, so as to obtain a setting value change amount ΔW to be given to a vector adjuster 12. A set value updating unit 52 updates a setting value W(t) to be given to the vector adjuster 12, based on the setting value change amount ΔW.

4. 发明专利

JPH0823246A HIGH FREQUENCY AMPLIFIER 失效
公开(公告)号：JPH0823246A
公开(公告)日：1996-01-23
申请号：JP15472594
申请日：1994-07-06
申请人： MITSUBISHI ELECTRIC CORP
发明人： KUNUGI MASARU
IPC分类号： H03G3/20 , H03F3/60 , H03F3/68
摘要： PURPOSE:To economically perform switching operation of output power without lowering high output power by providing desired output power by controlling the amplification of respective distributed signals in the process of amplifying, distributing an input signal and further adding amplified signal voltages and output it. CONSTITUTION:Control parts 5a and 5b set an operating state by outputting control signals to following stage amplifier parts 2a and 2b. An input signal S1 passes through a variable attenuator 10, is amplified by a preceding stage amplifier part 1 and inputted later to a power distributor 8. The signal inputted to the distributor 8 is distributed into two of equal amplitudes and equal phases and respectively amplified later by the following stage amplifiers 2a and 2b, and two signals are added again into one by a power circuit 9 and outputted later as a desired output signal S2 with high output power. Therefore, the switching operation of output power can be economically performed without lowering the high output power.

5. 发明专利

JPH06303059A FIELD EFFECT TRANSISTOR AMPLIFIER 失效
公开(公告)号：JPH06303059A
公开(公告)日：1994-10-28
申请号：JP10874193
申请日：1993-04-13
申请人： MITSUBISHI ELECTRIC CORP
发明人： KUNUGI MASARU
IPC分类号： H03G3/00
摘要： PURPOSE:To suppress the dispersion in characteristics such as noise index and a gain by suppressing the dispersion in the operating current with respect to dispersion in FETs. CONSTITUTION:A 2nd resistor 5b used to float a potential of a gate terminal in terms of DC is connected between a 1st inductor 4a for high frequency cut-off connecting to a gate terminal G of a FET 6 and a power supply section 7 applying a positive voltage to a drain terminal D of the FET 6 via a 2nd inductor 4b. The dispersion in the operating current is suppressed against dispersion in a drain current due to difference from FETs, and thereby suppressing the dispersion in the characteristic.

6. 发明专利

JP2012235382A Doherty amplifier 有权
标题翻译： DOHERTY放大器
公开(公告)号：JP2012235382A
公开(公告)日：2012-11-29
申请号：JP2011103577
申请日：2011-05-06
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： YAMAUCHI KAZUHISA , NOTO HIFUMI , NAKAYAMA MASATOSHI , MIYAZAKI MORIYASU , KUNUGI MASARU , TSUYAMA YASUNORI , NONOMURA HIROYUKI
IPC分类号： H03F1/07 , H03F3/68
摘要： PROBLEM TO BE SOLVED: To provide a Doherty amplifier that implements a wide band and a compact size.SOLUTION: A quarter wavelength line 3 is disposed on an input side of peak amplifiers 2a, 2b of unit Doherty amplifiers 100a, 100b so as to be shared between the peak amplifiers 2a, 2b. Quarter wavelength lines 6a, 6b are disposed on respective output sides of carrier amplifiers 1a, 1b of the unit Doherty amplifiers 100a, 100b, and outputs of the carrier amplifiers 1a, 1b and outputs of the peak amplifiers 2a, 2b are combined in a signal combiner 7. This can implement a wide band, and can save a quarter wavelength line on the input side of the peak amplifiers 2a, 2b to implement a compact size.
摘要翻译：要解决的问题：提供实现宽带和紧凑尺寸的Doherty放大器。解决方案：四分之一波长线3设置在单元Doherty放大器100a，100b的峰值放大器2a，2b的输入侧，以便在峰值放大器2a，2b之间共享。四分之一波长线6a，6b设置在单元Doherty放大器100a，100b的载波放大器1a，1b的相应输出侧，并且载波放大器1a，1b的输出和峰值放大器2a，2b的输出被组合成信号这可以实现宽带，并且可以在峰值放大器2a，2b的输入侧节省四分之一波长线以实现紧凑的尺寸。版权所有（C）2013，JPO＆INPIT

7. 发明专利

JP2009260472A Power amplifier 审中-公开
标题翻译：功率放大器
公开(公告)号：JP2009260472A
公开(公告)日：2009-11-05
申请号：JP2008104630
申请日：2008-04-14
申请人： Mitsubishi Electric Corp , 三菱電機株式会社
发明人： FUJISAKI KOICHI , KUNUGI MASARU , TANIGUCHI EIJI
IPC分类号： H03F1/07 , H03F3/24 , H03F3/60 , H03F3/68
摘要： PROBLEM TO BE SOLVED: To provide a power amplifier of small output power, which can prevent gain decline even when a peak amplifier is in an off state.
SOLUTION: The power amplifier comprises: a detection circuit 63 for detecting an output power level outputted from the power composition means 41 of Doherty-type amplifier 100; first and second switches 51 and 52 disposed in the input part of the Doherty-type amplifier 100; and a control circuit 71 for controlling the switching operation of the first and second switches 51 and 52 corresponding to the output power level detected by the detection circuit 63. The control circuit 71 controls the switching operation of the first and second switches 51 and 52 so as to input input signals to a carrier amplifier 11 directly without inputting them to an input signal distributor 31 when the output power level detected by the detection circuit 63 is lower than a prescribed threshold and to input the input signals to the input signal distributor 31 when the output power level detected by the detection circuit 63 is higher than the prescribed threshold.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：提供一种小功率的功率放大器，即使当峰值放大器处于断开状态时也能防止增益下降。功率放大器包括：检测电路63，用于检测从Doherty型放大器100的功率合成装置41输出的输出功率电平; 布置在Doherty型放大器100的输入部分的第一和第二开关51和52; 以及控制电路71，用于根据由检测电路63检测的输出功率电平来控制第一和第二开关51和52的切换操作。控制电路71控制第一和第二开关51和52的切换操作当检测电路63检测到的输出功率电平低于预定阈值时，输入信号直接输入到载波放大器11而不将它们输入到输入信号分配器31，并将输入信号输入到输入信号分配器31 由检测电路63检测的输出功率电平高于规定的阈值。版权所有（C）2010，JPO＆INPIT

8. 发明专利

JP2002271148A FEED-FORWARD AMPLIFIER 失效
公开(公告)号：JP2002271148A
公开(公告)日：2002-09-20
申请号：JP2001070960
申请日：2001-03-13
申请人： MITSUBISHI ELECTRIC CORP
发明人： HORIGUCHI KENICHI , NAKAYAMA MASATOSHI , IKEDA YUKIO , ISHIDA OSAMI , KUNUGI MASARU , SAKAI YUJI
IPC分类号： H03F1/32
摘要： PROBLEM TO BE SOLVED: To realize a feed-forward amplifier by which frequency characteristics of distortions will not deteriorate, even when the bandwidth of the frequency of input signals is large. SOLUTION: A power composing device 35 composes the distortion component and the pilot which is outputted from an auxiliary amplifier 13, whose amplitude is adjusted by an attenuator 35, and whose phase is adjusted by a phase converter 36 and the output signal of a distortion-eliminating circuit 2 and outputs a composite signal. A detector 20 detects the power of the composite pilot signal from the composite signal, and a control circuit 21 controls a variable attenuator 14 and a variable phase converter 15, so that the power of the detected composite pilot signal is minimal.

9. 发明专利

JPH02166906A MICROWAVE AMPLIFIER 失效
公开(公告)号：JPH02166906A
公开(公告)日：1990-06-27
申请号：JP32051788
申请日：1988-12-21
申请人： MITSUBISHI ELECTRIC CORP
发明人： KUNUGI MASARU
IPC分类号： H03F1/30 , H03F3/19
摘要： PURPOSE:To perform the satisfactory control of the collector current of a high frequency transistor, to reduce the number of parts and to realize the miniaturization of a device by inserting a temperature transducer between the emitter of the high frequency transistor and the ground. CONSTITUTION:The temperature transducer 13 connected between the emitter of the high frequency transistor 1 and a resistor 4 connected to the ground and outputs a current proportional to a temperature is provided. The temperature transducer 13 can suppress the change of the gain of a microwave due to temperature change by keeping the collector current of the high frequency transistor 1 almost constant against the temperature change. In such a way, the control of the collector current of the high frequency transistor can be performed satisfactorily and the microwave amplifier with a few number of parts and easy to miniaturize can be obtained.

10. 发明专利

JPH027708A AUTOMATIC GAIN CONTROL CIRCUIT 失效
公开(公告)号：JPH027708A
公开(公告)日：1990-01-11
申请号：JP15695588
申请日：1988-06-27
申请人： MITSUBISHI ELECTRIC CORP
发明人： KUNUGI MASARU
IPC分类号： H03G3/30
摘要： PURPOSE:To control the gain instantly with respect to a change in input and output signal levels by controlling the gain of an amplifier depending on a detection output of an input signal level detector and a detection output of an output signal level detector. CONSTITUTION:Part of the signal entering an input terminal 1 is extracted by a directional coupler 3a and detected by a detector 4a. Moreover, part of the signal amplified by a Dual-Gate FET AMP 2 is extracted by a directional coupler 3b and detected by a detector 4b. Two signals being detected outputs detected by the detectors 4a, 4b are amplified into a signal of a required level by a differential amplifier 7, the result is fed to the 2nd gate of the AMP 2 thereby controlling the operating state of the AMP 2 and the gain. Thus, the gain is controlled instantly against the input level fluctuation and the gain is accurately controlled against the output level fluctuation.

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