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1. 发明专利

JP2003273651A Frequency modulator, frequency modulation method, and radio circuit device 有权
标题翻译：频率调制器，频率调制方法和无线电电路设备
公开(公告)号：JP2003273651A
公开(公告)日：2003-09-26
申请号：JP2002066884
申请日：2002-03-12
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： ADACHI HISASHI , SAKAKURA MAKOTO
IPC分类号： H03M7/32 , H03C3/00 , H03C3/04 , H03C3/09 , H03L7/197 , H03M7/00 , H04L27/12
CPC分类号： H03C3/0966 , H03C3/0925 , H03C3/0933 , H03C3/0941 , H03C3/095 , H03C3/0958 , H03L7/1976 , H03M7/3022 , H03M7/3037 , H03M7/304 , H04L27/12
摘要： PROBLEM TO BE SOLVED: To provide a frequency modulator with which a reference signal source having no frequency modulation function can be used and wide band modulation is performed on the basis of a digital modulation signal. SOLUTION: A phase-locked loop (PLL) is formed from a voltage controlled oscillator 1, a variable frequency divider 2, a phase comparator 3, and a loop filter 4. A sigma/delta modulator 5 applies sigma/delta modulation to data obtained by adding fractional data M2 and modulation data X with the output signal of the variable frequency divider 2 as a clock. The output signal of the sigma/delta modulator 5 is added with integral data M1 and becomes effective frequency division data 13 of the variable frequency divider 2. At the same time, the output signal of the sigma/delta modulator 5 is passed through a D/A converter 6, a low-pass filter 7, and an amplitude control circuit 8 and becomes a control signal 14. The control signal 14 is inputted to the frequency modulation terminal of the voltage controlled oscillator 1. COPYRIGHT: (C)2003,JPO
摘要翻译：要解决的问题：提供一种可以使用不具有频率调制功能的参考信号源的频率调制器，并且基于数字调制信号进行宽带调制。解决方案：锁相环（PLL）由压控振荡器1，可变分频器2，相位比较器3和环路滤波器4形成。Σ/Δ调制器5应用Σ/Δ调制通过将分数数据M2和调制数据X与可变分频器2的输出信号相加而获得的数据作为时钟。 Σ/Δ调制器5的输出信号加上积分数据M1，成为可变分频器2的有效分频数据13.同时，Σ/Δ调制器5的输出信号通过D / A转换器6，低通滤波器7和振幅控制电路8，并成为控制信号14.控制信号14被输入到压控振荡器1的调频端。）2003，JPO

2. 发明专利

JP2002124631A SEMICONDUCTOR INTEGRATED CIRCUIT AND SURGE-PROTECTING CIRCUIT 失效
公开(公告)号：JP2002124631A
公开(公告)日：2002-04-26
申请号：JP2000318513
申请日：2000-10-18
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TAGI HIROYOSHI , NAKATANI TOSHIBUMI , ANDO TOSHIAKI , SAKAKURA MAKOTO
IPC分类号： H01L27/04 , H01L21/822
摘要： PROBLEM TO BE SOLVED: To incorporate an inductance component in a bonding wire used at package mounting time in a semiconductor integrated circuit. SOLUTION: A capacitance 27, for executing a series resonance with an inductance component of a bonding wire 25 for connecting a GND pad 26 of a semiconductor integrated circuit chip side to an external grounding element, is formed.

3. 发明专利

JP2002118462A PLL FREQUENCY SYNTHESIZER AND PLL FREQUENCY SYNCHRONIZING METHOD AND MEDIUM AND INFORMATION AGGREGATE 失效
公开(公告)号：JP2002118462A
公开(公告)日：2002-04-19
申请号：JP2000310863
申请日：2000-10-11
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： ANDO TOSHIAKI , NAKATANI TOSHIBUMI , ADACHI HISASHI , SAKAKURA MAKOTO
IPC分类号： H03L7/187 , H03L7/08
摘要： PROBLEM TO BE SOLVED: To solve the problem that the number of constituting components is increased since it is necessary to provide a plurality of oscillation circuits at the time of constituting a voltage control oscillation circuit of variable capacitative elements whose capacity variable width is small in a conventional PLL frequency synthesizer. SOLUTION: This PLL frequency synthesizer is provided with a voltage control oscillator 3 which is provided with a switchable circuit element group having a plurality of switchable oscillation frequency bands for outputting an oscillation signal corresponding to each oscillation frequency band based on a prescribed switching signal, a switch changeover controller 7 for outputting a signal for switching the circuit element group based on a prescribed reference as the switching signal, and a phase comparator 6 for allowing the voltage control oscillator 3 to perform oscillation with prescribed set frequencies.

4. 发明专利

JP2001094461A TRANSMISSION/RECEPTION CHANGEOVER SWITCH 失效
公开(公告)号：JP2001094461A
公开(公告)日：2001-04-06
申请号：JP27042499
申请日：1999-09-24
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： NAKAMURA HIROYUKI , SAKAKURA MAKOTO , TAKADA JUNICHI , YOSHIZUMI JUNICHI
IPC分类号： H01P1/185 , H04B1/44 , H04B1/48
摘要： PROBLEM TO BE SOLVED: To provide a transmission/reception changeover switch that can minimize reception loss while maintaining transmission characteristics by adopting a configuration that can provide a sufficient reverse bias voltage to a diode in the case of reception. SOLUTION: This transmission/reception changeover switch consists of an antenna terminal 101 connected to an antenna, a transmission terminal 102 connected to a transmission circuit, a reception terminal 103 connected to a reception circuit, a control terminal 104 to which a voltage is applied, a 1st diode 16 whose cathode is connected to the transmission terminal and whose anode is connected to the antenna terminal and the control terminal, a strip line 109 connected between the antenna terminal and the reception terminal, and a 2nd diode 117 whose anode is connected between the strip line and the reception terminal and whose cathode is connected to the ground.

5. 发明专利

JP2000332602A PLL CIRCUIT 失效
公开(公告)号：JP2000332602A
公开(公告)日：2000-11-30
申请号：JP14058599
申请日：1999-05-20
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： YOKONAGA HIROYUKI , SAKAKURA MAKOTO , ANDO TOSHIAKI , ISHIDA KAORU
IPC分类号： H03L7/08 , H03B5/12 , H03L7/093 , H03L7/099
摘要： PROBLEM TO BE SOLVED: To cancel fluctuation to ground or a power source and influences of noise from electromagnetic field interference from an antenna by equipping a voltage control oscillator for oscillation outputting a differential voltage signal and a frequency divider for frequency dividing the differential output signal of the voltage control oscillator and outputting it as another signal of a phase comparator. SOLUTION: In a voltage control oscillator 5, an oscillation frequency is controlled by a potential difference between an SLPF1 and an SLPF2 of output signals of a loop filter 4, output signals fvco1 and fvco2 are differentially outputted and its output differential voltage signal is inputted to a frequency divider 6. The frequency divider 6 inputs the differential voltage signals thus inputted to a phase comparator 2 as output signals by frequency dividing them into voltage signals fc. In this way, since all the voltage signal paths are received and delivered with the differential voltage signals, it is possible to cancel influences of noise accompanying potential change of a ground or a power source and noise of the same phase to electromagnetic field interference by a radiation electromagnetic wave of an antenna.

6. 发明专利

JP2000312161A MOBILE TERMINAL 失效
公开(公告)号：JP2000312161A
公开(公告)日：2000-11-07
申请号：JP2000041481
申请日：2000-02-18
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： NAKAMURA HIROYUKI , SAKAKURA MAKOTO , TAKAHASHI KENICHI
IPC分类号： G01S5/14 , H04B1/04 , H04B1/10 , H04B1/16 , H04B1/48
摘要： PROBLEM TO BE SOLVED: To provide a mobile terminal that has a filter, whose attenuation is ensured without increasing insertion loss and the size, that is a transmission and reception filter used for a radio communication system for, e.g. a satellite mobile phone used worldwide. SOLUTION: This mobile terminal consists of an antenna 102, a receiving filter 103 and a transmission filter 106 connected to the antenna 102, a demodulation section 104 connected to the reception filter 103, a detection section 107 that detects positional information from the demodulation section 104, a control section 108 connected to the detection section 107, and a modulation section 105 connected to the transmission filter 106. The control section 108 outputs a control signal to control terminals 109 and 110 on the basis of the detected position information, so as to change the attenuation of the reception filter 103 and the transmission filter 106.

7. 发明专利

JPH1146118A HIGH FREQUENCY OSCILLATING CIRCUIT 失效
公开(公告)号：JPH1146118A
公开(公告)日：1999-02-16
申请号：JP19959697
申请日：1997-07-25
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： ANDO TOSHIAKI , SAKAKURA MAKOTO , MIURA TAKESHI
IPC分类号： H03B5/12 , H03B5/18
摘要： PROBLEM TO BE SOLVED: To provide the high frequency oscillating circuit without deterioration in the characteristic such as S/N against external electromagnetic interference. SOLUTION: A capacitor connected between each base of two oscillating transistors(TRs) 1, 17 operated in a balanced state and ground is not connected to a ground pattern on a mount board, bases of the oscillation TRs 1, 17 are connected via a capacitor 4, capacitors connected to emitters of the TRs 1, 17 are not connected to the ground pattern on the mount board and the emitters of the oscillation TRs 1, 17 are connected by a capacitor 3.

8. 发明专利

JPH1032429A VOLTAGE CONTROLLED RESONATOR AND ITS ADJUSTMENT METHOD 失效
公开(公告)号：JPH1032429A
公开(公告)日：1998-02-03
申请号：JP18897596
申请日：1996-07-18
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： NAKAGAWA YOSHIHIRO , OGAWA KOICHI , ISHIZAKI TOSHIO , SAKAKURA MAKOTO , NAKAMURA TOSHIAKI
IPC分类号： H03B5/12 , H01P7/08 , H03B5/18
摘要： PROBLEM TO BE SOLVED: To provide a miniaturized voltage controlled resonator with less deviation of resonance frequency due to approach of a conductor, and is capable of more accurately adjusting the resonance frequency. SOLUTION: A second dielectric 12 to which a through-hole 103 is executed is piled on a first dielectric 101 constituting a resonance circuit, a ground electrode film 110 is executed on the second dielectric 102 and further, a capacity variable element 107 is mounted to the first dielectric 101 through the through- hole 103. Thus, the shieldability of the resonance circuit formed at the first dielectric 101 is improved by the ground electrode film 110 and the deviation of the resonance frequency by surrounding interference is reduced. Also, by shaving the ground electrode film 110, the resonance frequency of this voltage controlled resonator is accurately adjusted.

9. 发明专利

JPH09294018A HIGH FREQUENCY TWO-BAND OSCILLATING CIRCUIT 失效
公开(公告)号：JPH09294018A
公开(公告)日：1997-11-11
申请号：JP10579896
申请日：1996-04-25
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SAKAKURA MAKOTO , MIYOSHI HISANAGA , HASHIMOTO KOJI , FUSE NOBUO , KOSUGI HIROAKI , ISHIDA KAORU
IPC分类号： H03B5/02 , H03B5/18
摘要： PROBLEM TO BE SOLVED: To reduce the circuit scale by reducing number of two buffer amplifier circuits for two oscillation circuit outputs in a conventional high frequency 2-band oscillation circuit into one and eliminating the need for a single pole double throw switch for selecting buffer amplifier outputs at the same time. SOLUTION: The circuit is provided with a buffer amplifier circuit 2c receiving an output of a 1st oscillation circuit 1a via a 1st inter-stage coupling element 16a and receiving an output of a 2nd oscillation circuit 1b via a 2nd inter-stage coupling element 16b. A 1st oscillation circuit 1a or a 2nd oscillation circuit 1b is operated alternately with a control voltage given from control terminals 24a, 24b. Furthermore, the circuit is provided with a 2-band resonance circuit having resonance frequencies at 1st and 2nd frequency bands, and connected to an oscillation transistor(TR) 10a of the 1st oscillation circuit 1a via the 1st coupling capacitive element 15a and to an oscillation transistor(TR) 10b of the 2nd oscillation circuit 1b via the 2nd coupling capacitive element 15b.

10. 发明专利

JPH02107001A HIGH FREQUENCY CIRCUIT DEVICE 失效
公开(公告)号：JPH02107001A
公开(公告)日：1990-04-19
申请号：JP26081288
申请日：1988-10-17
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SAKAKURA MAKOTO , OGAWA KOICHI , HASHIMOTO KOJI
IPC分类号： H01P3/08 , H01P5/08
摘要： PURPOSE:To reduce a parasitic impedance caused by a lead line by providing a semiconductor chip, of which the electrode is mounted so as to be exactly or approximately on the same plane as the electrode part of a ground conductor, at the recessed part of the ground conductor. CONSTITUTION:A pedestal 3a of the ground conductor has the recessed part, which is provided so that the top-face electrode parts of the pedestal 3a and an FET chip 4 may be the same or approximately the same plane. Consequently, the length of a bonding wire 7 to connect between the source electrode part of the FET chip 4 and the electrode part of the pedestal 3a can be reduced. When the height dimension of the drain/gate electrode part of the FET chip 4 is the same or approximately the same as the height dimension of a microstrip line 6 of input/output side dielectric substrates 2a and 2b, the length of the bonding wire 7 to connect between them can be made shorter. Thus, the parasitic impedance caused by the lead line can be suppressed to a small value, and the stable high frequency characteristic can be obtained.

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