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41. 发明专利

JPS59178006A Feedback amplifier 失效
标题翻译：反馈放大器
公开(公告)号：JPS59178006A
公开(公告)日：1984-10-09
申请号：JP5287983
申请日：1983-03-29
申请人： Mitsubishi Electric Corp
发明人： IKEDA YUKIO , TAKAGI SUNAO , KIYONO KIYOHARU
IPC分类号： H03F3/60
CPC分类号： H03F3/60
摘要： PURPOSE:To change easily the gain of the entire system by providing an epitaxial layer to a lower part of a finger of a comb line coupler and forming alternately a Schottky junction and an ohmic junction plane onto the boundary face. CONSTITUTION:The epitaxial layer 20 is provided at the lower part of the fingers 18 and 19 of the comb line coupler of a feedback amplifier formed on a semiconductor substrate 16. Further, the Schottky junction plane is formed to the boundary between the finger 18 and the layer 20 and the ohmic junction plane is formed to the boundary face between the finger 19 and the layer 20. In changing the area of spread of a depletion layer 21 by adjusting a bias power supply 22 of the finger 18, the coupling capacitance between the fingers 18 and 19 is changed by the change in the capacitance of the depletion layer, resulting that the degree of coupling of the comb line coupler is changed. As a result, the gain of the feedback amplifier is changed.
摘要翻译：目的：通过向梳状线耦合器的手指的下部提供外延层并且在边界面上交替地形成肖特基结和欧姆结面，来容易地改变整个系统的增益。构成：外延层20设置在形成在半导体衬底16上的反馈放大器的梳状线耦合器的指状物18和19的下部。此外，肖特基结面形成于手指18与层20和欧姆结面形成在手指19和层20之间的边界面上。通过调节手指18的偏置电源22来改变耗尽层21的扩散面积，指状物18和19由于耗尽层的电容的变化而改变，导致梳状线耦合器的耦合度改变。结果，反馈放大器的增益被改变。

42. 发明专利

JP2002325021A MICROWAVE WIDE BAND AMPLIFIER 失效
公开(公告)号：JP2002325021A
公开(公告)日：2002-11-08
申请号：JP2001127756
申请日：2001-04-25
申请人： MITSUBISHI ELECTRIC CORP
发明人： YUGAWA HIDENORI , IYOMASA KAZUHIRO , IKEDA YUKIO , ARAI MASATOSHI
IPC分类号： H03F3/60
摘要： PROBLEM TO BE SOLVED: To provide a microwave wide band amplifier capable of increasing the degree of freedom of ore-match circuit design, and realizing the high gain or stability of amplifier. SOLUTION: A microwave wide band amplifier is equipped with an FET 3, a pre-match circuit 13 of the FET, and a matching circuit 4. The pre-match circuit 13 is constituted of a first short stab 11 having a first inductance 6, a first resistance 7, and a first capacitor 8; and a second short stab 12 having a second inductor 9 and a second resistance 10.

43. 发明专利

JP2002290163A HIGH-FREQUENCY AMPLIFIER 失效
公开(公告)号：JP2002290163A
公开(公告)日：2002-10-04
申请号：JP2001085889
申请日：2001-03-23
申请人： MITSUBISHI ELECTRIC CORP
发明人： HORIGUCHI KENICHI , NAKAYAMA MASATOSHI , IKEDA YUKIO , ISHIDA OSAMI , SAKAI YUJI , TOTANI KAZUYUKI
IPC分类号： H03F1/32 , H03F3/189 , H03G3/30
摘要： PROBLEM TO BE SOLVED: To suppress change in distortion power, even if there is a change in the ratio of peak power to average power. SOLUTION: A high-frequency amplifier is provided with an amplifier 1 for amplifying an input signal, an input signal judging circuit 6 for detecting the peak power and the average power of the input signal, calculating the ratio between the peak power and the average power, comparing the calculated peak to average power ratio with a prescribed reference value and giving an instruction to control a gate voltage to be supplied to the amplifier 1, based on the comparison result, and a gate voltage control circuit 7 for conrolling the gate voltage to be supplied to the amplifier 1, so as not to change the distortion power which is outputted from the amplifier 1, even if changes in the peak to average power ratio of the input signal occur, based on the indication from the input signal judging circuit 6.

44. 发明专利

JP2002290162A FEED-FORWARD AMPLIFIER 失效
公开(公告)号：JP2002290162A
公开(公告)日：2002-10-04
申请号：JP2001085866
申请日：2001-03-23
申请人： MITSUBISHI ELECTRIC CORP
发明人： HORIGUCHI KENICHI , NAKAYAMA MASATOSHI , IKEDA YUKIO , ISHIDA OSAMI , MORISHITA KEIJI , YASUNAGA YOSHINORI
IPC分类号： H03F1/32 , H04B1/04
摘要： PROBLEM TO BE SOLVED: To stably perform distortion-removing operation. SOLUTION: A feed-forward amplifier is provided with a detector 35 for detecting power of a useless wave signal, which is comprised in an output signal outputted from a distortion removing circuit 2; a comparator 51 for comparing the power of the detected useless wave signal with a prescribed threshold; a control circuit 36 for outputting a control voltage to be given to a vector adjuster 22, so as to minimize the power of the detected at unwanted wave signal; and a change-over unit 52 for changing-over the output destination of the control voltage from the control circuit 36, based on the comparison result of the comparator 51 and an averaging circuit 53 for averaging the control voltage from the change-over unit 52, when the power of the useless wave signal detected by the detector 35 is lower than the prescribed threshold and outputting it to the vector adjuster 22.

45. 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.

46. 发明专利

JP2001144395A HIGH-FREQUENCY CIRCUIT 失效
公开(公告)号：JP2001144395A
公开(公告)日：2001-05-25
申请号：JP32722199
申请日：1999-11-17
申请人： MITSUBISHI ELECTRIC CORP
发明人： MORI KAZUTOMI , SHINJO SHINTARO , IKEDA YUKIO
IPC分类号： H05K1/11 , H01L23/12 , H01P5/02 , H01P5/08 , H01P11/00 , H05K1/02 , H05K1/18
摘要： PROBLEM TO BE SOLVED: To stabilize the operation of a high-frequency circuit. SOLUTION: A semiconductor substrate 4, whereon a transistor is mounted, an input matching circuit 7 and an output matching circuit 8 are mounted on a dielectric substrate 1. A conductor block 19 having a specified height is connected to a conductor ground patter 15, mounted so as to come into contact with the dielectric substrate 1 between the input matching circuit 7 and the output matching circuit 8 and restrains unwanted compling between the input and output of a transistor.

47. 发明专利

JP2001053544A AMPLIFIER MODULE OF ANTENNA INTEGRATING TYPE 失效
公开(公告)号：JP2001053544A
公开(公告)日：2001-02-23
申请号：JP22794099
申请日：1999-08-11
申请人： MITSUBISHI ELECTRIC CORP
发明人： NAKAYAMA MASATOSHI , IKEDA YUKIO , MORI KAZUTOMI , YAMAUCHI KAZUHISA
IPC分类号： H01Q23/00
摘要： PROBLEM TO BE SOLVED: To improve performance and to miniaturize a device by providing a transmitting amplifier for connecting with a power feeding point lower than a prescribed impedance and a receiving amplifier for connecting with a power feeding point higher than a prescribed impedance among plural power feeding points to give an antenna. SOLUTION: A plate-like patch antenna 32, consisting of a thin copper foil, is stuck to a dielectric substrate 31 having a ground surface stuck on its rear surface, a high-powered amplifier for transmission 36 is connected with a power feeding point 33 given in the central area of the antenna 32, and a low-noise amplifier for reception 37 is connected with a power feeding point 34 given in a peripheral area. For the value of a power feeding impedance, the power feeding impedance of the point 33 can be lowered and the power feeding impedance of the point 34 can be raised by properly selecting the position of a feeding point at the antenna 32. It is dispensed with providing a matching circuit on the output side of the amplifier 36 and the input side of the amplifier 37, thereby the characteristics can be improved and a device can be miniaturized.

48. 发明专利

JP2000349564A POWER AMPLIFIER 失效
公开(公告)号：JP2000349564A
公开(公告)日：2000-12-15
申请号：JP15952499
申请日：1999-06-07
申请人： MITSUBISHI ELECTRIC CORP
发明人： YAMAUCHI KAZUHISA , IKEDA YUKIO , NAKAYAMA MASATOSHI , MORI KAZUTOMI , ITO YASUYUKI , NAKAAZE HIROAKI
IPC分类号： H03F1/32
摘要： PROBLEM TO BE SOLVED: To provide a distortion compensating effect for a semiconductor amplifier itself by properly giving the semiconductor amplifier the signal of the base band frequency of a modulation wave or the amplitude phase of double waves. SOLUTION: When the sum signal of adjacent frequencies f1 and f2 is inputted to an input terminal, a current having the even-ordered nonliniarity of a transistor 5 and a base band frequency Δf=f1-f2 is generated in a drain. Since this frequency Δf is lower than that of an input signal, the impedance of a capacitor becomes high and the current of the base band frequency signal flows to a bias circuit 6. As the result, when the impedance of a bias circuit 6 with respect to the base band is not 0 Ω, the voltage of the base band frequency is generated at a drain terminal. This voltage variation modulates the input signal to generate an inter-modulation distortion of 2f1-f2, 2f2-f1, etc., and controls the amplitude and the phase of the base band frequency signal generated by the even-ordered nonlinearity of the transistor 5 to control the amplitude and the phase of the inter-modulation distortion of the semiconductor amplifier.

49. 发明专利

JP2000165164A HIGH FREQUENCY AMPLIFIER 失效
公开(公告)号：JP2000165164A
公开(公告)日：2000-06-16
申请号：JP33277998
申请日：1998-11-24
申请人： MITSUBISHI ELECTRIC CORP
发明人： MORI KAZUTOMI , NAKAYAMA MASATOSHI , MOCHIZUKI MITSURU , SHINJO SHINTARO , IKEDA YUKIO
IPC分类号： H03F3/20 , H01P5/18 , H03F3/189 , H03G3/00 , H03G3/10 , H04B1/04
摘要： PROBLEM TO BE SOLVED: To reduce the power consumption to a large extent by selecting a switch in response to an output level at an output terminal and further controlling a power supply or a bias condition of a post-stage amplifier. SOLUTION: An output of the post-stage amplifier 6 is not affected by a bypass line 7 because of an isolation characteristic of a directional coupler 12. When a high frequency signal from a pre-stage amplifier 2 bypasses the post-stage amplifier 6, the directional coupler 12 couples the high frequency signal with an output terminal 8 from the bypass line 7. In this case, a control circuit 11 controls a power supply and a bias signal for the post-stage amplifier 6.

50. 发明专利

JP2000151295A DISTORTION COMPENSATING CIRCUIT 失效
公开(公告)号：JP2000151295A
公开(公告)日：2000-05-30
申请号：JP31464798
申请日：1998-11-05
申请人： MITSUBISHI ELECTRIC CORP
发明人： HORIGUCHI KENICHI , NAKAYAMA MASATOSHI , IKEDA YUKIO
IPC分类号： H03F1/34 , H03F1/32 , H03F1/38 , H03G3/30 , H04B1/04
摘要： PROBLEM TO BE SOLVED: To obtain a distortion compensating circuit which can always optimize distortion compensation irrelevantly to variation in the mean power of an input signal, secular changes of an amplifier, and state changes of the amplifier accompanying temperature variation and can perform distortion compensation even when the range of the input frequency is wide. SOLUTION: The distortion compensating circuit is equipped with a vector adjuster 9, a linearizer 10, an amplifier 11, a linear signal extraction path 4 for extracting part of the input signal from the input side of the vector adjuster, a nonlinear signal extraction path 5 for extracting part of the output signal from the output side of the amplifier, a level detector 12 which detects the composite power level of the linear signal extraction path and nonlinear signal extraction path, and a control circuit 13 which adjusts the bias of the linearizer according to the detected composite power level, electrically adjusts the linearizer so that the detected power is minimum, and further adjusts the vector adjuster so that the detected power becomes minimum each time the linearizer is adjusted.

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