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1. 发明申请

US20130207729A1 POWER AMPLIFIER 有权
标题翻译：功率放大器
公开(公告)号：US20130207729A1
公开(公告)日：2013-08-15
申请号：US13611844
申请日：2012-09-12
申请人： Atsushi Okamura , Takayuki Matsuzuka
发明人： Atsushi Okamura , Takayuki Matsuzuka
IPC分类号： H03F3/21
CPC分类号： H03F1/0261 , H03F1/302 , H03F1/56 , H03F3/602 , H03F2200/18 , H03F2200/411
摘要： A power amplifier includes: an amplifier having a base into which input signals are input, a collector to which a collector voltage is supplied, and an emitter; and a bias circuit for supplying a bias current to the base of the amplifier. The bias circuit includes a first transistor having a first control terminal into which a reference voltage is input, a first terminal to which a power voltage is applied, and a second terminal connected to the base of the amplifier. A capacitance adjusting circuit elevates capacitance between a grounding point and at least one of the first control terminal and the first terminal when the collector voltage of the amplifier is lowered.
摘要翻译：功率放大器包括：具有输入信号的基极的放大器，提供集电极电压的集电极和发射极; 以及用于向放大器的基极提供偏置电流的偏置电路。偏置电路包括具有输入基准电压的第一控制端子的第一晶体管，施加电源电压的第一端子和连接到放大器的基极的第二端子。当放大器的集电极电压降低时，电容调整电路提高接地点与第一控制端子和第一端子中的至少一个之间的电容。

2. 发明授权

US08138836B2 Emitter-follower type bias circuit 有权
标题翻译：发射体跟随器型偏置电路
公开(公告)号：US08138836B2
公开(公告)日：2012-03-20
申请号：US12875168
申请日：2010-09-03
申请人： Takayuki Matsuzuka , Kazuya Yamamoto , Tomoyuki Asada
发明人： Takayuki Matsuzuka , Kazuya Yamamoto , Tomoyuki Asada
IPC分类号： H03F3/16
CPC分类号： H03F3/16
摘要： An emitter-follower bias circuit supplying a bias voltage to the base of an amplification transistor includes: a depletion mode FET boosting a reference voltage; and an emitter-follower circuit generating the bias voltage in response to the reference voltage boosted by the depletion mode FET.
摘要翻译：向放大晶体管的基极提供偏置电压的射极跟随器偏置电路包括：耗尽型FET，提高参考电压; 以及射极跟随器电路，其响应于由耗尽型FET升压的参考电压而产生偏置电压。

3. 发明授权

US07705658B2 Wave detector circuit 有权
标题翻译：波检测电路
公开(公告)号：US07705658B2
公开(公告)日：2010-04-27
申请号：US11748601
申请日：2007-05-15
申请人： Kazuya Yamamoto , Miyo Miyashita , Takayuki Matsuzuka
发明人： Kazuya Yamamoto , Miyo Miyashita , Takayuki Matsuzuka
IPC分类号： H03K17/60
CPC分类号： H03F3/19 , G01R21/12 , H03F3/211 , H03F2200/393 , H03F2200/408 , H03F2200/451 , H03F2200/471
摘要： A wave detector circuit includes: a first transistor having its base and collector connected together, the first transistor receiving an AC signal and a reference voltage at its base and collector; a second transistor having its base connected to the base of the first transistor through a resistor, the second transistor outputting a detected voltage at its collector; and a diode-connected temperature compensation transistor connected between ground potential and the base and the collector of the first transistor.
摘要翻译：波检测器电路包括：第一晶体管，其基极和集电极连接在一起，第一晶体管在其基极和集电极处接收AC信号和参考电压; 第二晶体管，其基极通过电阻连接到第一晶体管的基极，第二晶体管在其集电极处输出检测电压; 以及连接在地电位与第一晶体管的基极和集电极之间的二极管连接的温度补偿晶体管。

4. 发明申请

US20080174356A1 WAVE DETECTOR CIRCUIT 有权
标题翻译：波检测电路
公开(公告)号：US20080174356A1
公开(公告)日：2008-07-24
申请号：US11748601
申请日：2007-05-15
申请人： Kazuya YAMAMOTO , Miyo MIYASHITA , Takayuki MATSUZUKA
发明人： Kazuya YAMAMOTO , Miyo MIYASHITA , Takayuki MATSUZUKA
IPC分类号： G06G7/00 , G06G7/12
CPC分类号： H03F3/19 , G01R21/12 , H03F3/211 , H03F2200/393 , H03F2200/408 , H03F2200/451 , H03F2200/471
摘要： A wave detector circuit includes: a first transistor having its base and collector connected together, the first transistor receiving an AC signal and a reference voltage at its base and collector; a second transistor having its base connected to the base of the first transistor through a resistance, the second transistor outputting a detected voltage at its collector; and a diode-connected temperature compensation transistor connected between ground potential and the base and the collector of the first transistor.
摘要翻译：波检测器电路包括：第一晶体管，其基极和集电极连接在一起，第一晶体管在其基极和集电极处接收AC信号和参考电压; 第二晶体管，其基极通过电阻连接到第一晶体管的基极，第二晶体管在其集电极处输出检测电压; 以及连接在地电位与第一晶体管的基极和集电极之间的二极管连接的温度补偿晶体管。

5. 发明申请

US20070126520A1 VOLTAGE-CONTROLLED OSCILLATOR 有权
标题翻译：电压控制振荡器
公开(公告)号：US20070126520A1
公开(公告)日：2007-06-07
申请号：US11563757
申请日：2006-11-28
申请人： Takayuki MATSUZUKA
发明人： Takayuki MATSUZUKA
IPC分类号： H03L1/00
CPC分类号： H03L1/023 , H03B5/04 , H03B5/1841
摘要： A voltage-controlled oscillator including a voltage-controlled oscillation section, a frequency control bias circuit, a temperature compensation bias circuit, and a temperature compensation bias generation circuit. The temperature compensation bias generation circuit has a transistor having its collector or drain connected to the temperature compensation bias circuit, a first resistor having one end connected to the collector or drain of the transistor and having another end that is grounded, a second resistor having one end connected to the base or gate of the transistor, a base or gate bias application terminal connected to another end of the second resistor, a third resistor having one end connected to the emitter or source of the transistor, and an emitter or source bias application terminal connected to another end of the third resistor.
摘要翻译：包括压控振荡部分，频率控制偏置电路，温度补偿偏置电路和温度补偿偏置产生电路的压控振荡器。温度补偿偏置产生电路具有其集电极或漏极连接到温度补偿偏置电路的晶体管，第一电阻器的一端连接到晶体管的集电极或漏极，另一端接地，第二电阻器具有一个连接到晶体管的基极或栅极，连接到第二电阻器的另一端的基极或栅极施加端子，具有连接到晶体管的发射极或源极的一端的第三电阻器，以及发射极或源偏压应用端子连接到第三电阻器的另一端。

6. 发明申请

US20130241659A1 POWER AMPLIFIER 有权
标题翻译：功率放大器
公开(公告)号：US20130241659A1
公开(公告)日：2013-09-19
申请号：US13601038
申请日：2012-08-31
申请人： Takayuki Matsuzuka , Kazuhiro Iyomasa
发明人： Takayuki Matsuzuka , Kazuhiro Iyomasa
IPC分类号： H03F3/21
CPC分类号： H03F1/0261 , H03F1/0277 , H03F3/211 , H03F3/602 , H03F3/72 , H03F2200/18 , H03F2203/7231 , H03F2203/7236
摘要： A power amplifier includes: a first amplifying element amplifying an input signal; a second amplifying element amplifying an output signal of the first amplifying element; a third amplifying element amplifying the input signal; a first switch connected between an output of the first amplifying element and an input of second amplifying element; a second switch connected between an output of the first amplifying element and an output of the third amplifying element; a third switch connected between an output of the first amplifying element and an output of the second amplifying element; a reference voltage generating a circuit generating reference voltage; a bias circuit supplying a bias current, based on the reference voltage, to inputs of the first, second, and third amplifying elements; and a control circuit controlling the first, second and third switches and the reference voltage generating circuit.
摘要翻译：功率放大器包括：放大输入信号的第一放大元件; 放大第一放大元件的输出信号的第二放大元件; 放大所述输入信号的第三放大元件; 第一开关，连接在第一放大元件的输出端和第二放大元件的输入端之间; 第二开关，连接在第一放大元件的输出端和第三放大元件的输出端之间; 连接在第一放大元件的输出端和第二放大元件的输出端之间的第三开关; 产生电路产生参考电压的参考电压; 偏置电路，基于所述参考电压向所述第一，第二和第三放大元件的输入端提供偏置电流; 以及控制电路，控制第一，第二和第三开关和参考电压产生电路。

7. 发明申请

US20120306579A1 POWER AMPLIFIER 有权
标题翻译：功率放大器
公开(公告)号：US20120306579A1
公开(公告)日：2012-12-06
申请号：US13301955
申请日：2011-11-22
申请人： Atsushi OKAMURA , Kazuya Yamamoto , Takayuki Matsuzuka
发明人： Atsushi OKAMURA , Kazuya Yamamoto , Takayuki Matsuzuka
IPC分类号： H03F3/04
CPC分类号： H03F3/211 , H03F1/0261 , H03F1/301 , H03F1/302 , H03F1/32 , H03F2200/18 , H03F2200/405 , H03F2200/93
摘要： A power amplifier includes: an amplifying element having a base into which input signals are inputted, a collector to which a collector voltage is applied, and an emitter; and a bias circuit supplying a bias current to the base of the amplifying element. The bias circuit includes a bias current lowering circuit which lowers the bias current when the collector voltage is lower than a prescribed threshold value.
摘要翻译：功率放大器包括：具有输入信号的基极的放大元件，施加集电极电压的集电极和发射极; 以及向放大元件的基极提供偏置电流的偏置电路。偏置电路包括偏置电流降低电路，当集电极电压低于规定的阈值时，降低偏置电流。

8. 发明授权

US08217722B2 Power amplifier 有权
标题翻译：功率放大器
公开(公告)号：US08217722B2
公开(公告)日：2012-07-10
申请号：US13079046
申请日：2011-04-04
申请人： Kazuya Yamamoto , Miyo Miyashita , Satoshi Suzuki , Takayuki Matsuzuka
发明人： Kazuya Yamamoto , Miyo Miyashita , Satoshi Suzuki , Takayuki Matsuzuka
IPC分类号： H03F3/20
CPC分类号： H03F3/195 , H03F1/0277 , H03F3/189 , H03F3/245 , H03F3/72 , H03F2200/27 , H03F2200/411 , H03F2203/7206 , H03F2203/7236 , H03G1/0088
摘要： A power amplifier comprises: an amplifying transistor for amplifying an input signal; a reference voltage generating circuit which generates a reference voltage; a bias circuit generating a bias voltage based on the reference voltage and supplying the bias voltage to the amplifying transistor; and a booster elevating an enable voltage input from outside and outputting the enable voltage. The reference voltage generating circuit is turned ON/OFF in correspondence with an output voltage of the booster. The booster includes: an enable terminal to which the enable voltage is applied; a power source terminal connected to a power source; a transistor having a control electrode connected to the enable terminal, a first electrode connected to the power source terminal, and a second electrode that is grounded; and a FET resistor connected between the first electrode of the transistor and the power source terminal. A gate electrode of the FET resistor is open.
摘要翻译：功率放大器包括：放大晶体管，用于放大输入信号; 产生参考电压的基准电压产生电路; 偏置电路，基于所述参考电压产生偏置电压，并将所述偏置电压提供给所述放大晶体管; 并且升压器提升从外部输入的使能电压并输出使能电压。基准电压发生电路与增压器的输出电压对应地接通/断开。升压器包括：施加使能电压的使能端子; 连接到电源的电源端子; 具有连接到使能端子的控制电极的晶体管，连接到电源端子的第一电极和接地的第二电极; 以及连接在晶体管的第一电极和电源端子之间的FET电阻器。 FET电阻的栅电极断开。

9. 发明申请

US20120154055A1 POWER AMPLIFIER 有权
标题翻译：功率放大器
公开(公告)号：US20120154055A1
公开(公告)日：2012-06-21
申请号：US13195066
申请日：2011-08-01
申请人： Kazuya Yamamoto , Miyo Miyashita , Takayuki Matsuzuka , Kenji Mukai
发明人： Kazuya Yamamoto , Miyo Miyashita , Takayuki Matsuzuka , Kenji Mukai
IPC分类号： H03F3/68 , H03F3/04
CPC分类号： H03F3/191 , H03F1/56 , H03F3/193 , H03F2200/15 , H03F2200/18 , H03F2200/211 , H03F2200/222 , H03F2200/318 , H03F2200/387 , H03F2200/411 , H03G1/007
摘要： A power amplifier includes a first amplifier unit, a second amplifier unit, and an attenuator. The second amplifier receives a signal from the first amplifier unit and amplifies the signal. The attenuator is provided between the first and second amplifier units. The attenuator has arms, including at least one parallel arm and at least one series arm, and has switches connected to the arms to switch the electrical connection states of the arms with respect to the first and second amplifier units. The at least one parallel arm and the at least one series arm are alternately arranged, in the order named, as viewed in the direction from the first amplifier unit to the second amplifier unit.
摘要翻译：功率放大器包括第一放大器单元，第二放大器单元和衰减器。第二放大器从第一放大器单元接收信号并放大信号。衰减器设置在第一和第二放大器单元之间。衰减器具有包括至少一个并联臂和至少一个串联臂的臂，并且具有连接到臂的开关，以相对于第一和第二放大器单元切换臂的电连接状态。按照从第一放大器单元到第二放大器单元的方向观察，所述至少一个并联臂和至少一个串联臂交替排列。

10. 发明授权

US07602238B2 Power amplifier 有权
标题翻译：功率放大器
公开(公告)号：US07602238B2
公开(公告)日：2009-10-13
申请号：US12098538
申请日：2008-04-07
申请人： Takayuki Matsuzuka , Kazuya Yamamoto
发明人： Takayuki Matsuzuka , Kazuya Yamamoto
IPC分类号： H03F1/14
CPC分类号： H03F3/245 , H03F1/0261 , H03F1/302 , H03F1/303 , H03F3/19 , H03F2200/165 , H03F2200/168 , H03F2200/171 , H03F2200/18 , H03F2200/411 , H03F2200/451
摘要： An amplifier element amplifies RF signals. An emitter follower unit drives the amplifier element at a constant voltage corresponding to a reference voltage supplied to a reference terminal from outside. A current injection unit drives the amplifier element at a constant current corresponding to the reference voltage. An analog control unit analogically controls the output voltage of the emitter follower unit in correspondence with the control voltage supplied to a control terminal from outside. A mode switching unit switches whether the emitter follower unit is operated or not in correspondence with the control voltage.
摘要翻译：放大器元件放大RF信号。射极跟随器单元以与从外部提供给参考端子的参考电压相对应的恒定电压来驱动放大器元件。电流注入单元以对应于参考电压的恒定电流驱动放大器元件。模拟控制单元对应于从外部提供给控制端子的控制电压模拟地控制发射极跟随器单元的输出电压。模式切换单元根据控制电压来切换射极跟随器单元是否工作。

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