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1. 发明专利

JP2007028473A Negative feedback amplifying device and negative feedback amplification transmission system 审中-公开
标题翻译：负反馈放大装置和负反馈放大传输系统
公开(公告)号：JP2007028473A
公开(公告)日：2007-02-01
申请号：JP2005210943
申请日：2005-07-21
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： KITAMURA YORIHIRO
IPC分类号： H03F1/34 , H03F1/32 , H04B1/04
摘要： PROBLEM TO BE SOLVED: To provide a negative feedback amplifying device with stability and small distortion to a variance of transmission bandwidth and environmental variations.
SOLUTION: A modulation means 3 for modulating an input signal through a carrier signal; an amplifier means 4 for amplifying the modulation signal modulated by the modulation means 3; a demodulation means 5 for demodulating the output signal of the amplifier means; a subtraction means 6 for subtracting the output signal of the demodulation means from a modulating signal; a filter means 7 with variable cut-off frequency for outputting a feed-back signal by performing band confinement of the differential signal; a summing means 2 for adding the feed-back signal to the modulating signal and entering it to the modulation means; and a filter coefficient control means 10 for controlling the cut-off frequency of the filter means according to the magnitude of the differential signal are provided. In addition, the filter coefficient control means can change the cut-off frequency of a loop filter.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供具有稳定性和小失真的负反馈放大装置，以使传输带宽和环境变化的变化。解决方案：用于通过载波信号调制输入信号的调制装置3; 用于放大由调制装置3调制的调制信号的放大装置4; 用于解调放大器装置的输出信号的解调装置5; 减法装置6，用于从调制信号中减去解调装置的输出信号; 具有可变截止频率的滤波器装置7，用于通过执行差分信号的频带限制来输出反馈信号; 加法装置2，用于将反馈信号加到调制信号并将其输入调制装置; 并且提供了用于根据差分信号的大小来控制滤波器装置的截止频率的滤波器系数控制装置10。此外，滤波器系数控制装置可以改变环路滤波器的截止频率。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2002057571A CLOSED LOOP OSCILLATION SUPERVISORY/CONTROL CIRCUIT 失效
公开(公告)号：JP2002057571A
公开(公告)日：2002-02-22
申请号：JP2000238730
申请日：2000-08-07
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SAKAIHARA KUNIHIKO , KITAMURA YORIHIRO , AKIYAMA TAKESHI , OKUNO DAISUKE , SATO TSUNETARO
IPC分类号： H03L7/06
摘要： PROBLEM TO BE SOLVED: To provide a closed loop oscillation supervisory/control circuit which does not need to use the signal of a special adjusted waveform for confirmation and re-adjustment for securing the stability of a loop and does not hinder which the continuity of communication or acceleration of a communication speed. SOLUTION: In a digital signal processing circuit 1, prescribed arithmetic processing is applied to error signal components supplied from error amplifiers 11 and 15. On the basis of the result of such arithmetic processing, in a frequency converter/phase shifter 4, frequency converting processing and phase shifting processing are applied to a signal supplied from a quadrature modulator/ frequency converter 5. Then, in a quadrature demodulator/frequency converter 8, quadrature demodulating processing and frequency converting processing are applied to the signal, to which frequency converting processing and phase shifting processing are applied, supplied from the frequency converter/phase shifter 4 and the resultant is supplied to the error amplifiers 11 and 15 as a feedback signal.

3. 发明专利

JP2002232497A SIGNAL ERROR COMPENSATION DEVICE 失效
公开(公告)号：JP2002232497A
公开(公告)日：2002-08-16
申请号：JP2001029699
申请日：2001-02-06
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SAKAIHARA KUNIHIKO , KITAMURA YORIHIRO
IPC分类号： H04L27/20 , H04L27/36
摘要： PROBLEM TO BE SOLVED: To provide a signal error compensation device that can compensate for an analog error included in each signal with phase axes or amplitude levels. SOLUTION: The signal error compensation device is provided with a 1st amplifier section 11 that amplifies an I signal (Ii) obtained by applying serial-to- parallel conversion to a transmission signal, a 2nd amplifier section 13 that amplifies a Q signal (Qi), adjustment resistors 15a-15f, a 1st amplitude/phase adjustment section 17 that receives an output signal from the 1st amplifier section 11 through the adjustment resistor 15a and an output signal from the 2nd amplifier section 13 via the adjustment resistor 15c, adjusts the gain and phase based on the resistances of the adjustment resistors 15a, 15b, 15c and provides an output of an output signal (Io), and a 2nd amplitude/phase adjustment section 19 that receives an output signal from the 1st amplifier section 11 through the adjustment resistor 15b and an output signal from the 2nd amplifier section 13 via the adjustment resistor 15d, adjusts the gain and phase on the basis of the resistance of the adjustment resistors 15b, 15d, 15f and provides an output of an output signal (Qo).

4. 发明专利

JP2002176321A METHOD FOR CORRECTING DISTORTION OF TRANSMISSION SIGNAL IN RADIO EQUIPMENT AND RADIO EQUIPMENT HAVING DISTORTION CORRECTION FUNCTION 失效
公开(公告)号：JP2002176321A
公开(公告)日：2002-06-21
申请号：JP2000371729
申请日：2000-12-06
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： MATSUMOTO HIDEHIKO , KITAMURA YORIHIRO , IDO TAIJI
IPC分类号： H03F1/32 , H03F1/02 , H03F1/34 , H03F3/24 , H04B1/04
摘要： PROBLEM TO BE SOLVED: To provide a distortion correcting method capable of maintaining a constant transmission distortion characteristic with respect to the change of the transmission distortion characteristic caused by environmental variation, etc., and radio equipment having a distortion correction function. SOLUTION: Baseband data 10 to be transmitted is converted into a transmission signal through a distortion compensating part 117, a D/A converting part 102, an orthogonal modulator 103 and a frequency converter 104, subjected to power amplification in a power amplifier 105 and outputted from an antenna part 107. A part of the output 17 of the power amplifier 105 is digitally converted into feedback system baseband data 21 through a directional coupler 106, a frequency converter 113, a quadrature demodulator 112 and an A/D converting part 111. The feedback system baseband data 21 is compared with the baseband data 10 to be transmitted by a comparing part 115, and a distortion quantity operating part 114 calculates the distortion quantity of the transmission signal. A bias controlling part 110 controls the bias voltage of the power amplifier 105 on the basis of the distortion quantity.

5. 发明专利

JP2002141777A PHASE SHIFTER 失效
公开(公告)号：JP2002141777A
公开(公告)日：2002-05-17
申请号：JP2000330965
申请日：2000-10-30
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： KITAMURA YORIHIRO , IKEDO TAIICHI , OKA TATSUTO , HAMAZAKI TOSHINORI , SAKAIHARA KUNIHIKO
IPC分类号： H03H11/22 , H03H11/16 , H03H11/18
摘要： PROBLEM TO BE SOLVED: To provide a phase shifter that can output 4 signals with equal amplitude and a phase difference of 90 degrees with each other over a broadband even when a frequency of the input signal fluctuates. SOLUTION: A poly-phased filter 301 receiving two input signals 300 with a phase difference of 180 degrees generates 4 poly-phased filter output signals 302 with equal amplitude and a phase difference of 90 degrees with each other. In this case, a frequency doubler 303 receiving the poly-phased filter output signals 302 generates doubler output signals 304 with a frequency twice that of the input signals 300 and whose duty factor is 50%. Then a 1/2 frequency divider 306 receives the doubler output signals 304 whose duty factor is accurately 50% and generates 1/2 frequency divider output signals with a frequency being half that of its input signal and with a phase different of 90 degrees with each other. Thus, the phase shifter can provide outputs of 4 1/2 frequency divider output signals 307 with the same frequency, equal amplitude and a phase difference of 90 degrees with each other over a broadband.

6. 发明专利

JP2007311839A Digital radio device 审中-公开
标题翻译：数字无线电设备
公开(公告)号：JP2007311839A
公开(公告)日：2007-11-29
申请号：JP2006135961
申请日：2006-05-16
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： SATO TSUNETARO , OTOMO REIKO , KITAMURA YORIHIRO
IPC分类号： H04L27/36 , H04B1/04 , H04L27/38
摘要： PROBLEM TO BE SOLVED: To provide a digital radio device wherein DC offset is reduced and the size of the device is also reduced. SOLUTION: The digital radio device 1 is provided with: a data transmission section 3 for transmitting a transmission data signal from an antenna 2; a data reception section 4 for receiving a reception data signal using the antenna 2; and a data feedback section 5 for feeding one part of the transmission data signal to be transmitted from the antenna 2 back to the data reception section 4 as a feedback signal. A DC offset detecting section 17 in the data reception section 4 detects the difference between a DC voltage of the feedback data signal and a predetermined reference voltage as a DC offset quantity ΔDC (ΔI and ΔQ). A DC offset correcting section 7 of the data transmission section 3 uses the DC offset quantity ΔDC (ΔI and ΔQ) to correct the DC voltage of the transmission data signal to be transmitted. COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：提供一种数字无线电设备，其中DC偏移减小并且设备的尺寸也减小。解决方案：数字无线电设备1设置有：用于从天线2发送发送数据信号的数据发送部分3; 数据接收部分4，用于使用天线2接收接收数据信号; 以及用于将要从天线2发送的发送数据信号的一部分馈送回数据接收部分4作为反馈信号的数据反馈部分5。数据接收部分4中的直流偏移检测部分17检测反馈数据信号的直流电压和预定参考电压之间的差作为直流偏移量ΔDC（ΔI和ΔQ）。数据发送部3的DC偏移校正部7使用DC偏移量ΔDC（ΔI和ΔQ）来校正要发送的发送数据信号的DC电压。版权所有（C）2008，JPO＆INPIT

7. 发明专利

JP2003008670A 90° phase shifter 审中-公开
标题翻译： 90°相位移
公开(公告)号：JP2003008670A
公开(公告)日：2003-01-10
申请号：JP2001186900
申请日：2001-06-20
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： KITAMURA YORIHIRO , IKEDO TAIICHI , OKA TATSUTO , HAMAZAKI TOSHINORI
IPC分类号： H04L27/18
摘要： PROBLEM TO BE SOLVED: To provide an excellent 90° phase shifter that outputs each four equiamplitude signals with a phase difference of 90° in a wide-band.
SOLUTION: An output 303 is generated by multiplying an input signal 301 with the Gilbert model of a multiplication circuit. The generated output 303 is input into a filter 304 that passes a double frequency of an input signal 301 to gain an excellent double multiplication output 305 in the duty ratio of 50%. Then the double multiplication output 305 is input into a DFF 306, and into a DFF 308 through a NOT circuit 307. Thereby the DFF 306 and the DFF 308 are operated in the rise and the fall of the double multiplication output 305 respectively to generate excellent each output signal 3010 and 3011 provided with the phase difference of 90° in the half frequency to the double multiplication output 305 by two clock division circuits 309 designed according to this structure.
COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供优良的90度移相器，输出相位差为90度的四个等幅信号。在宽带。解决方案：通过将输入信号301与乘法电路的吉尔伯特模型相乘来产生输出303。所生成的输出303被输入到滤波器304，滤波器304通过输入信号301的双倍频率，以占空比为50％的方式获得良好的双乘法输出305。然后，双乘法输出305通过非电路307输入到DFF 306和DFF308中。因此，DFF 306和DFF 308分别在双乘法输出305的上升和下降中运行以产生优异的每个输出信号3010和3011具有90度的相位差。在通过根据该结构设计的两个时钟分频电路309的半倍频到双倍乘法输出305。

8. 发明专利

JP2002118613A RADIO EQUIPMENT 失效
公开(公告)号：JP2002118613A
公开(公告)日：2002-04-19
申请号：JP2000307990
申请日：2000-10-06
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SAKAIHARA KUNIHIKO , KITAMURA YORIHIRO
IPC分类号： H04L27/18 , H04B7/06 , H04B7/08 , H04L27/34
摘要： PROBLEM TO BE SOLVED: To provide radio equipment which can synchronize the phases of signals outputted from a plurality of modems used in parallel to each other. SOLUTION: An integrated circuit is provided with a phase divider 101 which is actuated when a trigger signal T is inputted, and outputs a local signal LO0 which is in-phase with a local signal LO inputted from a local transmitter and another local signal LO90 which is shifted in phase from that of the signal LO0 by 90 deg. after generating the signal LO90; and modulating sections 1031-103n which output quadrature modulated signals obtained by respectively multiplying the inputted local signals LO0 and LO90 by quadrature base-band signals BBI and BBQ and adding the signals BBI and BBQ to each other. The local signals LO0 and LO90 outputted from the phase divider 101 are inputted to each modulating section 1031-103n.

9. 发明专利

JP2002064411A DIGITAL TRANSMITTER 失效
公开(公告)号：JP2002064411A
公开(公告)日：2002-02-28
申请号：JP2000246986
申请日：2000-08-16
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： AKIYAMA TAKESHI , KITAMURA YORIHIRO , SAKAIHARA KUNIHIKO
IPC分类号： H04L27/20 , H04B1/04 , H04B3/04 , H04L27/36
摘要： PROBLEM TO BE SOLVED: To shorten the time required until a distortion compensating factor is updated at the time of adjusting a reference table. SOLUTION: A digital transmitter is provided with the reference table 11 prestoring distortion compensating factors, a table adjusting signal generating section 12 which generates a table adjusting signal, and a signal selecting section 13 which selects and outputs the table adjusting signal instead of a quadrature base-band signal when the table 11 is adjusted. The transmitter is also provided with a predistortion section 15 which compensates the distortion of the output signal of the signal selecting section 13 based on one of the distortion compensating factors stored on the table 11, a quadrature modulation section 17 which performs quadrature modulation on the output signal of the section 13, and an amplifying section 18 which amplifies the quadrature modulated signals. In addition, the transmitter is also provided with a quadrature demodulation section 19 which performs quadrature demodulation on part of the quadrature modulated signals by feeding back the part and a factor updating section 21 which updates the distortion compensating factor corresponding to the power value related to the output signal of the signal selecting section 13 and stored on the table 11 based on the comparative error of the quadrature demodulated signals and the output signal of the section 13.

10. 发明专利

JP2008017219A Phase shifter and radio transmission device 审中-公开
标题翻译：相变和无线电传输设备
公开(公告)号：JP2008017219A
公开(公告)日：2008-01-24
申请号：JP2006187036
申请日：2006-07-06
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： KITAMURA YORIHIRO
IPC分类号： H03H11/18 , H04B1/04 , H04L27/20
摘要： PROBLEM TO BE SOLVED: To provide a phase shifter which is usable over a wide band with excellent phase precision even when a 90° phase generator outputs a rectangular wave at a low frequency, and a radio transmission device which is equipped with the phase shifter and has a distortion compensating function.
SOLUTION: The phase shifter 100 is provided with a 90° phase circuit 110 which outputs a first signal and a second signal having a 90° phase difference from an input signal, balanced mixers 120a and 120b which input the first and second signals respectively and control amplitude and polarity of an output signal according to a phase control voltage, a combiner 130 which synthesizes output signals of the balanced mixers 120a and 120b and outputs a composite signal, a buffer 150 which amplifies and outputs the composite signal, and a waveform shaping filter 140 which is provided between the combiner 130 and the buffer 150 and shapes the waveform of the composite signal. The radio transmission device uses the phase shifter 100 to perform wide-band negative feedback compensation.
COPYRIGHT: (C)2008,JPO&INPIT
摘要翻译：要解决的问题：即使当90°相位发生器输出低频矩形波时，也提供一种可以在宽带上使用，具有优异的相位精度的移相器，以及配备有具有失真补偿功能。解决方案：移相器100设置有90°相位电路110，其输出第一信号和与输入信号具有90°相位差的第二信号，平衡混频器120a和120b输入第一和第二信号分别根据相位控制电压控制输出信号的振幅和极性，组合器130，其合成平衡混频器120a和120b的输出信号并输出复合信号;放大并输出复合信号的缓冲器150;以及波形整形滤波器140，其设置在组合器130和缓冲器150之间，并对复合信号的波形进行整形。无线发送装置使用移相器100进行宽带负反馈补偿。版权所有（C）2008，JPO＆INPIT

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