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1. 发明专利

JP2007180971A Transmitter and communication apparatus using the same 审中-公开
标题翻译：使用它的发射机和通信设备
公开(公告)号：JP2007180971A
公开(公告)日：2007-07-12
申请号：JP2005377938
申请日：2005-12-28
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： SAKAI YUKIO , IWAMIYA HIROKI , OOSUMI YUUJI
IPC分类号： H04B1/03
CPC分类号： H04B1/03
摘要： PROBLEM TO BE SOLVED: To improve the transmission characteristic of a transmission signal.
SOLUTION: This transmitter 7 has a substrate 8, a semiconductor circuit 9 arranged on the substrate 8 to generate a transmission signal, an amplifier 11 arranged on the substrate 8 and connected to an output side of the semiconductor circuit 9, a transmission line 12 arranged along a side of the substrate 8 and connected to an output side of the amplifier 11, and an antenna terminal 13 arranged on the substrate 8 and connected to an output side of the transmission line 12. Since the transmission signal amplified by the amplifier 11 is caused to pass through a peripheral edge part of the substrate 8 due to the above configuration, the transmission signal can be prevented from being mixed with other circuit blocks to be able to improve a transmission characteristic of the transmitter 7.
COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：解决的问题：提高发送信号的发送特性。解决方案：该发射器7具有基板8，布置在基板8上以产生透射信号的半导体电路9，布置在基板8上并连接到半导体电路9的输出侧的放大器11，线路12沿着基板8的一侧布置并连接到放大器11的输出侧，天线端子13布置在基板8上并连接到传输线12的输出侧。由于由由于上述结构，使放大器11通过基板8的周边部分，可以防止发送信号与其他电路块混合，从而能够提高发射机7的传输特性。版权所有（C）2007，JPO＆INPIT

2. 发明专利

JP2004336924A Switching power supply apparatus 审中-公开
公开(公告)号：JP2004336924A
公开(公告)日：2004-11-25
申请号：JP2003131346
申请日：2003-05-09
申请人： Matsushita Electric Ind Co Ltd , 松下電器産業株式会社
发明人： SAKAI YUKIO , HIGASHIYA HIROSHI
IPC分类号： H02M3/00
摘要： PROBLEM TO BE SOLVED: To provide a switching power supply apparatus which can delete the voltage regulating step of an electronic apparatus or a portable apparatus.
SOLUTION: In order to raise the error voltage detecting accuracy of an error amplifier 31, the switching power supply apparatus includes a first regulating element 1 provided at the inverting input terminal 4 of the error amplifier 31, a second regulating element 2 provided at the output side of the error amplifier 31, and further a third regulating element 3 connected to the non-inverting input terminal 5 of the error amplifier 31. Thus, the voltage accuracy of each terminal of the error amplifier 31 can be maintained within a predetermined value.
COPYRIGHT: (C)2005,JPO&NCIPI

3. 发明专利

JP2003163543A HIGH FREQUENCY POWER AMPLIFIER 审中-公开
公开(公告)号：JP2003163543A
公开(公告)日：2003-06-06
申请号：JP2001358789
申请日：2001-11-26
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SAKAI YUKIO , YASUI FUMIO , KATOU HISAYOSHI
IPC分类号： H03F3/20 , H03F1/26
摘要： PROBLEM TO BE SOLVED: To solve a problem of an interference caused by a noise generated by an automatic power control circuit. SOLUTION: A ground 17e of an automatic power control circuit 17 of a high-frequency power amplifying apparatus is connected to a ground 13c of a power amplifier 13 via an inductive reactance element 18 preventing frequency outputted from the power amplifier 13. This prevents a noise generated by the automatic power control circuit 17 from interfering the power amplifier 13. COPYRIGHT: (C)2003,JPO

4. 发明专利

JP2001345603A HIGH-FREQUENCY EQUIPMENT 失效
公开(公告)号：JP2001345603A
公开(公告)日：2001-12-14
申请号：JP2000167262
申请日：2000-06-05
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SAKAI YUKIO , MIYAKE EIJI , ASAKAWA YASUTERU , TSUNEOKA MICHIO
IPC分类号： H01P1/213 , H04B1/38
摘要： PROBLEM TO BE SOLVED: To prevent deterioration of the reception sensitivity of high-frequency equipment used for mobile communication, personal computer communication, etc. SOLUTION: Deterioration of the reception wave sensitivity of the high-frequency equipment is prevented in such a way that a fitting 20 formed not to cover the antenna terminal 12 and transmission terminal 13 of an antenna multicoupler 1 is connected to the ground terminal of the multicoupler 1, so that the fitting 20 may cover the receiving terminal 11 of the multicoupler 1 without coming into contact with the terminal 11 and the integral parts are inserted into and arranged in the through section 2 of a both-sided substrate 10. In addition, the fitting 20 is fixed from the inserting direction of the substrate 10.

5. 发明专利

JP2001024530A RECEIVER CIRCUIT 失效
公开(公告)号：JP2001024530A
公开(公告)日：2001-01-26
申请号：JP19276799
申请日：1999-07-07
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： MIYAKE EIJI , ASAKAWA YASUTERU , SAKAI YUKIO , TSUNEOKA MICHIO
IPC分类号： H04B1/26 , H04B1/10 , H04B1/16 , H04B1/18
摘要： PROBLEM TO BE SOLVED: To improve the interfering wave removing characteristics of a receiver circuit and to reduce the size of the circuit by constituting a mobile object communication equipment dealing at least with two systems of a small-sized crystal filter instead of a large SAW filter conventionally used for an IF filter and inputting the output of a 1st IF filter to a 2nd IF filter having a pass band wider at least than that of the 1st IF filter. SOLUTION: The receiver circuit is provided with a 1st change-over switch 16, a 1st IF filter 17 connected to one of the output terminals of the switch 16, a 2nd change-over switch 19 connected to the output terminal of the filter 17 connected to the other output terminal of the switch 16 and a 2nd IF filter 18 connected to the output terminal of the switch 19 and constituted so that the pass band width of the filter 17 is narrower than that of the filter 18.

6. 发明专利

JPH1098342A GAIN-ADJUSTING CIRCUIT AND FREQUENCY CONVERSION CIRCUIT 失效
公开(公告)号：JPH1098342A
公开(公告)日：1998-04-14
申请号：JP25259696
申请日：1996-09-25
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： HIGASHIYA HIROSHI , SAKAI YUKIO
IPC分类号： H03G3/02 , H03D7/00
摘要： PROBLEM TO BE SOLVED: To realize gain linearity in a wide temperature range for a temperature compensation function by providing a temperature compensation function also for a gain-adjusting circuit. SOLUTION: This system consists of a voltage variable attenuator 11 setting a loss quantity according to a control voltage and attenuating the gain of a high-frequency input signal to output and a bias voltage setting circuit 12 adding a gain compensation quantity at the time of varying a temperature, with respect to a prescribed fixed attenuation quantity under a fixed temperature corresponding to the fixed attenuation quantity and outputting the control voltage equivalent to an added attenuation quantity to the voltage-variable attenuator through a resistor 102.

7. 发明专利

JPH1093462A HIGH FREQUENCY EQUIPMENT 失效
公开(公告)号：JPH1093462A
公开(公告)日：1998-04-10
申请号：JP24276096
申请日：1996-09-13
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： IWASA MASAHARU , SAKAI YUKIO , KOYAMA ICHIRO
IPC分类号： H04B1/38 , H05K1/02 , H05K1/18
摘要： PROBLEM TO BE SOLVED: To prevent abnormal oscillation in a handset and deterioration or the like in a passing loss of a transmission switch circuit and a reception switch circuit in the high frequency equipment such as a transmission reception unit for a digital cordless telephone set. SOLUTION: A transmission switch circuit 3 and a reception switch circuit 5 are mounted on a printed circuit board 11 while being divided to the left and the right of dielectric band pass filter 2, and an outer conductor of the dielectric band pass filter 2 is connected to a ground of the printed circuit board 11. Thus, an abnormal oscillation in a transmission circuit 4 and deterioration in the passing loss or the like in the transmission switch circuit 3 and the reception switch circuit 5 are prevented.

8. 发明专利

JPH0983254A HIGH FREQUENCY MIXER CIRCUIT AND RECEPTION CONVERTER USING IT 失效
公开(公告)号：JPH0983254A
公开(公告)日：1997-03-28
申请号：JP22984895
申请日：1995-09-07
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SAKAI YUKIO , TSUNEOKA MICHIO
IPC分类号： H03D7/02 , H04B1/18
摘要： PROBLEM TO BE SOLVED: To obtain the high frequency mixer circuit in which intermodulation distortion is reduced by a mixer circuit by providing a coil circuit between balun balanced terminals even when an individual difference arises in manufactured baluns and to obtain the reception converter using the high frequency mixer circuit. SOLUTION: In a double balanced mixer circuit consisting of a 1st balun 7, a 2nd balun 8 and a diode bridge 9, coils 1, 2 are provided between the balun 7 and the bridge 9. The coil 1 is connected between balanced terminals of the 1st balun 7 and the coil 2 is connected between a midpoint 30 of the coil 1 and ground. Thus, a phase difference between the balanced terminals of the 1st balun 7 approaches 180 deg. without limit so as to suppress a deviation in the phase difference between the balanced terminals due to manufacturing thereby reducing considerably intermodulation distortion in the high frequency mixer circuit.

9. 发明专利

JPH08125561A TUNER 失效
公开(公告)号：JPH08125561A
公开(公告)日：1996-05-17
申请号：JP25821694
申请日：1994-10-24
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： TSUNEOKA MICHIO , SAKAI YUKIO
IPC分类号： H04B1/16 , H04B1/18
摘要： PURPOSE: To attain normal operation even when circuit constitution is simple and an input electric field intensity is high a tuner which is provided with a PLL synthesizer using a voltage control oscillator as a local oscillation source for a receiver receiving an RF signal and provided with a gain control circuit at a stage prior to a frequency conversion circuit. CONSTITUTION: The tuner using the PLL synthesizer as the local oscillation source is provided with the gain control circuit 4 at the stage prior to the frequency converter 6 of the tuner. Through the use of the lock detection signal of the PLL synthesizer, when the PLL synthesizer is in an unlocked state, the gain of the gain control circuit 4 is controlled to lower. Otherwise, through the use of a channel selection control signal to the PLL synthesizer, the gain of the gain control circuit 4 is controlled to lower at the time of channel selection.

10. 发明专利

JPH08125406A FILTER DEVICE, ANTENNA MULTICOUPLER USING IT AND BIDIRECTIONAL COMMUNICATION EQUIPMENT USING THE MULTICOUPLER 失效
公开(公告)号：JPH08125406A
公开(公告)日：1996-05-17
申请号：JP26524294
申请日：1994-10-28
申请人： MATSUSHITA ELECTRIC IND CO LTD
发明人： SAKAI YUKIO , TSUNEOKA MICHIO , KOYAMA ICHIRO
IPC分类号： H05K1/16 , H01P1/205 , H01P1/213 , H04B1/40
摘要： PURPOSE: To realize the filter applied to a radio communication equipment such as a cordless telephone set or a cordless facsimile equipment and whose characteristic is not deteriorated even when plural filters are mounted side by side. CONSTITUTION: A 1st coaxial dielectric resonator 1 and a 2nd coaxial dielectric resonator 2 are arranged to one side of a double side board, a 1st capacitor 11 is connected between a connection terminal 65 of the 1st coaxial dielectric resonator 1 and an input terminal 18, and a 2nd capacitor 12 is connected between a connection terminal 66 of the 2nd coaxial dielectric resonator 2 and an output terminal 19. Then a 3rd capacitor 13 is connected between the connection terminal 65 of the 1st coaxial dielectric resonator 1 and the connection terminal 66 of the 2nd coaxial dielectric resonator 2, the 1st capacitor 11 and the 2nd capacitor 12 are mounted on the other side of the double side board 10 and the 3rd capacitor 13 is mounted on one side of the double side board 10.

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