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1. 发明专利

JP2003258662A DUAL-FREQUENCY CONVERTER UNIT IN COMMON USE 审中-公开
公开(公告)号：JP2003258662A
公开(公告)日：2003-09-12
申请号：JP2002060757
申请日：2002-03-06
申请人： ALPS ELECTRIC CO LTD
发明人： SUZUKI TAKEO , ASANO SHOICHI
IPC分类号： H04B1/26 , H04B1/18 , H04B1/40
摘要： PROBLEM TO BE SOLVED: To obtain a converter unit in common use for two frequencies with a local oscillation circuit 53 which can share two frequency bands inside a converter unit, and is low in manufacturing cost with superior operability. SOLUTION: This converter unit is provided with a local oscillator 40 which generates a local oscillation signal, a first frequency divider 41 which generates 2-frequency divided signal of the local oscillation signal, and a second frequency divider 42 which generates 4-frequency divided signal of the local oscillation signal. This converter unit in common use for two frequencies selectively converts the frequency of high-frequency signals of 2.4 GHz band and 5 GHz band and a base-band signal by frequency mixing. The frequency conversion of high-frequency signal of 2.4 GHz band and the base-band signal can be performed by frequency mixing using the 2-frequency divided signals of the local oscillation signal. The frequency conversion of high-frequency signal of 5 GHz band and the base-band signal can be performed by frequency mixing using the respective local oscillation signals and the 4-frequency-divided signal of the local oscillation signal. COPYRIGHT: (C)2003,JPO

2. 发明专利

JP2000341158A RECEPTION CIRCUIT 失效
公开(公告)号：JP2000341158A
公开(公告)日：2000-12-08
申请号：JP14831399
申请日：1999-05-27
申请人： ALPS ELECTRIC CO LTD
发明人： ASANO SHOICHI
IPC分类号： H04B1/16
摘要： PROBLEM TO BE SOLVED: To prevent an amplifier from oscillating due to an amplified received signal that is re-input to the amplifier via a bypass circuit. SOLUTION: This reception circuit is provided with one or more amplifier 5 that amplifies a received signal and outputs the amplified signal to a common output terminal 9, a bypass circuit 6 that outputs the received signal to the common output terminal 9 without amplification, and a signal changeover means 7 that is provided at the input of the amplifier 5 and an input of the bypass circuit 6 and gives the received signal to the amplifier 5 or the bypass circuit 6. The bypass circuit 6 has an impedance element 6a inserted in series in the circuit 6.

3. 发明专利

JP2004112217A Receiver 审中-公开
标题翻译：接收器
公开(公告)号：JP2004112217A
公开(公告)日：2004-04-08
申请号：JP2002270484
申请日：2002-09-17
申请人： Alps Electric Co Ltd , アルプス電気株式会社
发明人： SUZUKI TAKEO , ASANO SHOICHI
IPC分类号： H04L27/38 , H04B1/30
摘要： PROBLEM TO BE SOLVED: To provide a receiver capable of accurately differentiating the phase difference of I and Q signals outputted from mixers by 90 degrees. SOLUTION: The receiver includes: two mixers 5, 6 for receiving modulated high frequency signals; and a signal generating section 7 for generating a local oscillation signal supplied to the two mixers 5, 6, and the signal generating section 7 is provided with: an oscillation circuit 8; and a signal distribution means 9 for distributing an oscillated signal outputted from the oscillation circuit 8 and receiver for supplying the distributed signal to the two mixers, the signal distribution means 9 for adjusting the phase difference between the distributed signals. COPYRIGHT: (C)2004,JPO
摘要翻译：要解决的问题：提供一种能够将从混频器输出的I和Q信号的相位差精确地区分90度的接收机。解决方案：接收机包括：用于接收调制高频信号的两个混频器5,6; 并且用于产生提供给两个混频器5,6和信号产生部分7的本地振荡信号的信号产生部分7设置有：振荡电路8; 信号分配装置9，用于分配从振荡电路8输出的振荡信号和接收器，用于将分配信号提供给两个混频器，信号分配装置9用于调整分布信号之间的相位差。版权所有（C）2004，JPO

4. 发明专利

JP2003078433A Frequency conversion circuit 审中-公开
标题翻译：频率转换电路
公开(公告)号：JP2003078433A
公开(公告)日：2003-03-14
申请号：JP2001268902
申请日：2001-09-05
申请人： Alps Electric Co Ltd , アルプス電気株式会社
发明人： SUZUKI TAKEO , IZUMIYAMA TORU , ASANO SHOICHI
IPC分类号： H04B1/10 , H04B1/26 , H04B1/28 , H04B1/3822 , H04B1/40
CPC分类号： H04B1/28 , H04B1/403
摘要： PROBLEM TO BE SOLVED: To prevent beat disturbance by two local oscillation signals from occurring in performing frequency conversion twice. SOLUTION: A frequency conversion circuit is provided with a first mixer 2c for performing frequency conversion of a reception signal arranged at each first frequency interval into a first intermediate frequency signal at each prescribed frequency interval, the frequency of which is lower than that of the reception signal, and second mixers 2f and 2g for performing frequency conversion of the first intermediate frequency signal into a second intermediate frequency signal, the frequency of which is lower than that of the first intermediate frequency signal, and supplies the first mixer 2c with a first local oscillation signal that changes at a second frequency interval different from the first frequency interval, and the second mixers 2f and 2g with a second local oscillation signal whose frequency is a fraction of integer of that of the first local oscillation signal.
摘要翻译：要解决的问题：为了防止在执行频率转换两次时发生两个本地振荡信号的搏动干扰。解决方案：频率转换电路设置有第一混频器2c，用于以每个规定的频率间隔对每个第一频率间隔布置的接收信号进行频率转换，其频率低于接收频率的第一中频信号信号和第二混频器2f和2g，用于执行第一中频信号的频率转换成第二中频信号，其频率低于第一中频信号的频率，并且向第一混频器2c提供第一中频信号振荡信号以与第一频率间隔不同的第二频率间隔变化，第二混频器2f和2g具有第二本地振荡信号，其频率是第一本地振荡信号的整数倍数。

5. 发明专利

JP2002076889A FREQUENCY SYNTHESIZER 失效
公开(公告)号：JP2002076889A
公开(公告)日：2002-03-15
申请号：JP2000268409
申请日：2000-08-31
申请人： ALPS ELECTRIC CO LTD
发明人： AOKI KAZUHARU , ASANO SHOICHI
IPC分类号： H03L7/22 , H03B21/02 , H03L7/08 , H03L7/197 , H03L7/23
摘要： PROBLEM TO BE SOLVED: To provide a frequency synthesizer that reduces a lockup time. SOLUTION: The frequency synthesizer is provided with a 1st voltage controlled oscillator 11 that is controlled by a 1st PLL circuit 13 and outputs a 1st oscillation signal, a 2nd voltage controlled oscillator 21 that is controlled by a 2nd PLL circuit 23 and outputs a 2nd oscillation signal, and a mixer 30 that outputs a signal being a sum or a difference between the 1st and 2nd oscillation signals. The 1st voltage controlled oscillator 11 is oscillated at an interval of a 1st step frequency, the 2nd voltage controlled oscillator 21 is oscillated at an interval of a 2nd step frequency lower than the 1st step frequency, and a reference frequency of the 1st PLL circuit 13 is selected higher than a reference frequency of the 2nd PLL circuit 23.

6. 发明专利

JP2009267680A Antenna device 有权
标题翻译：天线设备
公开(公告)号：JP2009267680A
公开(公告)日：2009-11-12
申请号：JP2008113677
申请日：2008-04-24
申请人： Alps Electric Co Ltd , Mega Chips Corp , アルプス電気株式会社 , 株式会社メガチップス
发明人： ASANO SHOICHI , MATSUMOTO MASATO
IPC分类号： H01Q9/16 , H01Q7/00
摘要： PROBLEM TO BE SOLVED: To prevent the generation of a reverse current in the storage of an antenna element, to suppress the deterioration a gain of an antenna, and to improve antenna characteristics.
SOLUTION: The inside of a casing 1 is provided with a contact element 10 composed of a spring member, contact segments 10a, 10b are formed in the contact element 10, wherein the contact segments 10a, 10b corresponding to the respective insertion ends 11a, 11b of antenna elements 2a, 2b stored in the casing 1 are elastically brought into contact with the contact element. Thus, in the antenna elements 2a, 2b stored in the casing 1, the antenna insertion ends (11a, 11b) are DC-connected via the contact element 10 to form a loop type antenna. In addition, if the antenna elements 2a, 2b are drawn from the casing 1 to be developed in the horizontal direction, they operate as dipole type antennas.
COPYRIGHT: (C)2010,JPO&INPIT
摘要翻译：要解决的问题：为了防止在天线元件的存储中产生反向电流，抑制天线增益的劣化，并且改善天线特性。解决方案：壳体1的内部设置有由弹簧构件构成的接触元件10，在接触元件10中形成接触段10a，10b，其中对应于相应插入端的接触段10a，10b 存储在壳体1中的天线元件2a，2b的11a，11b弹性地与接触元件接触。因此，在存储在壳体1中的天线元件2a，2b中，天线插入端（11a，11b）经由接触元件10直流连接，形成环型天线。此外，如果天线元件2a，2b从壳体1被拉出以在水平方向上显影，则它们作为偶极天线工作。版权所有（C）2010，JPO＆INPIT

7. 发明专利

JP2006319436A Gain control circuit 审中-公开
标题翻译：增益控制电路
公开(公告)号：JP2006319436A
公开(公告)日：2006-11-24
申请号：JP2005137479
申请日：2005-05-10
申请人： Alps Electric Co Ltd , アルプス電気株式会社
发明人： ASANO SHOICHI , AOKI KAZUHARU
IPC分类号： H03G3/12
CPC分类号： H03F3/24 , H03F1/30 , H03F1/302 , H03F3/04 , H03F3/45475 , H03F2200/447 , H03F2200/451 , H03F2200/504 , H03G1/04
摘要： PROBLEM TO BE SOLVED: To provide a gain control circuit whose gain can be suppressed constant without being affected by ambient temperature. SOLUTION: The gain control circuit is provided with: a variable resistor means 21 connected to a power terminal B; a control means 25 using a gain control voltage to control the resistance of the variable resistor means 21; and a voltage detection means 26 that detects a voltage drop across a current detection resistor 23 inserted between the variable resistor means 21 and a collector of the amplifier transistor 22. The gain control circuit is characterized in that the voltage drop detected by the voltage detection means 26 is fed back to the control means 25 to control the resistance of the variable resistor means 21 so as to suppress increase/decrease in a current flowing through the current detection resistor 23. COPYRIGHT: (C)2007,JPO&INPIT
摘要翻译：要解决的问题：提供一种增益控制电路，其增益可以被恒定而不受环境温度的影响。
解决方案：增益控制电路设置有：连接到电源端子B的可变电阻器装置21; 使用增益控制电压来控制可变电阻装置21的电阻的控制装置25; 以及电压检测装置26，其检测插入在可变电阻装置21和放大器晶体管22的集电极之间的电流检测电阻器23上的电压降。增益控制电路的特征在于，由电压检测装置 26被反馈到控制装置25以控制可变电阻装置21的电阻，以便抑制流过电流检测电阻器23的电流的增加/减少。（C）2007，JPO和INPIT

8. 发明专利

JP2002319823A I/Q OSCILLATOR 失效
公开(公告)号：JP2002319823A
公开(公告)日：2002-10-31
申请号：JP2001125494
申请日：2001-04-24
申请人： ALPS ELECTRIC CO LTD
发明人： SUZUKI TAKEO , ASANO SHOICHI
IPC分类号： H03B27/00 , H04L27/38
摘要： PROBLEM TO BE SOLVED: To provide an I/Q oscillator that is oscillated at a required local oscillating frequency and the configuration of which is simplified by directly extracting two local oscillating signals whose phases differs from each other by π/2 from the oscillator. SOLUTION: The oscillator comprises at least a 1st amplifier 1 that receives a positive feedback by a closed loop and a 1st phase shifter 3 placed in the closed loop, the 1st phase shifter 3 comprises a π/2 phase lead circuit or phase lag circuit and the oscillation signal is outputted respectively from two positions in the closed loop whose phases differs from each other by π/2.

9. 发明专利

JPH11340785A ACTIVE LOW-PASS FILTER 失效
公开(公告)号：JPH11340785A
公开(公告)日：1999-12-10
申请号：JP14575298
申请日：1998-05-27
申请人： ALPS ELECTRIC CO LTD
发明人： AOKI KAZUHARU , ASANO SHOICHI
IPC分类号： H03F1/22 , H03H11/12
摘要： PROBLEM TO BE SOLVED: To decrease the loss of a signal by reducing current consumption. SOLUTION: A feedback circuit 4 is connected between the input electrode of an amplifying element Q1 of an initial-stage amplifying circuit 1 and the output electrode of an amplifying element Q3 of a final-stage amplifying circuit 3 and this feedback circuit 4 is composed of a series circuit of a voltage stepping-down means 4b which generates a nearly constant voltage drop irrelevantly to whether the current increases or decreases and a feedback resistance 4a. Then a bias voltage is supplied from the output electrode of the amplifying element Q3 to the input electrode of the amplifying element Q1 through the feedback circuit 4.

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