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41. 发明专利

JP2006191278A Gain control modulating/demodulating circuit and communication device using the same 有权
标题翻译：增益控制调制/解调电路和通信装置
公开(公告)号：JP2006191278A
公开(公告)日：2006-07-20
申请号：JP2005000560
申请日：2005-01-05
申请人： Sony Corp , ソニー株式会社
发明人： MOROHASHI HIDEO
IPC分类号： H03G3/10 , H03D7/14 , H04B1/04 , H04B1/18
CPC分类号： H03D7/1425 , H03D7/1433 , H03D7/145 , H03D7/1458 , H03D2200/0025 , H03D2200/0033 , H03D2200/0088
摘要： PROBLEM TO BE SOLVED: To provide a gain control amplifier to a mixer which performs modulation and demodulation.
SOLUTION: A mixer circuit which is supplied with an input signal and an oscillation signal and modulates and demodulates the input signal and the gain control amplifier with a π type load which is supplied with the output signal of the mixer circuit and has its gain controlled is connected between 1st and 2nd reference potentials, and the number of stages of gain control amplifiers is decreased to improve temperature characteristics and linearity and reduce current consumption.
COPYRIGHT: (C)2006,JPO&NCIPI
摘要翻译：要解决的问题：提供一种增益控制放大器到进行调制和解调的混频器。解决方案：提供输入信号和振荡信号的混频器电路，并且以提供混频器电路的输出信号的π型负载对输入信号和增益控制放大器进行调制和解调，并且具有增益控制连接在第一和第二参考电位之间，增益控制放大器的级数减少，以改善温度特性和线性度，并降低电流消耗。版权所有（C）2006，JPO＆NCIPI

42. 发明专利

JP2006511153A 1 / f noise waveform minimization for ZIF mixer 审中-公开
公开(公告)号：JP2006511153A
公开(公告)日：2006-03-30
申请号：JP2004561804
申请日：2003-12-05
申请人：コーニンクレッカフィリップスエレクトロニクスエヌヴィKoninklijke Philips Electronics N.V.
发明人：ビックラム、アール．バサルヤ , ルカ、ロココ
IPC分类号： H03D7/14
CPC分类号： H03D7/1433 , H03D7/1425 , H03D7/1458 , H03D2200/0033 , H03D2200/0043
摘要：ミキサ（１１）のギルバートセル（Ｑ３〜Ｑ８）はミキサ（１１）の１対の出力端子（ＯＵＴ１，ＯＵＴ２）の間の差分出力電圧を制御する。ミキサ（１１）の多結晶シリコン抵抗（Ｒ７）は前記差分出力電圧に対する差分負荷を供給する。ミキサ（１１）の１対の電流源（Ｑ１１，Ｑ１２）は前記ギルバートセル（Ｑ３〜Ｑ８）に対しバイアス電流を提供する。ミキサ（１１）の１対の抵抗（Ｒ８，Ｒ９）はそれぞれ、電流源（Ｑ１１，Ｑ１２）を通過する直流電流の流れを妨げる。

43. 发明专利

JP2004528770A Power mixer architecture for the transmission equipment 有权
公开(公告)号：JP2004528770A
公开(公告)日：2004-09-16
申请号：JP2002580436
申请日：2002-04-09
申请人：フィリップスエレクトロニクスノースアメリカコーポレイション
发明人：アボルファズル，コースロウベイジ , ストレートペトルス，エム
IPC分类号： H03D7/14 , H04B1/04
CPC分类号： H03D7/1425 , H03D7/1433 , H03D7/1491 , H03D2200/0023 , H03D2200/0033 , H03D2200/0043
摘要： A power mixer architecture for a transmitter chip is disclosed. The power mixer architecture is a mixing stage including one or more upper trees, and one or more lower trees. Each lower tree is selectively activated to receive current biasing signals, and current intermediate frequency signals. Upon receipt, the activated lower tree activates a corresponding upper tree to receive one or more amplified current intermediate frequency signals from the lower tree. In conjunction with a reception of voltage local oscillating signals, the upper tree provides voltage radio frequency signals. The gain of the lower tree is designed to be constant over any variance in a temperature, supply voltage or processing performance of the transmitter chip.

44. 发明专利

JP2004104414A Push-pull amplifier and frequency conversion circuit 审中-公开
公开(公告)号：JP2004104414A
公开(公告)日：2004-04-02
申请号：JP2002262837
申请日：2002-09-09
申请人： Nec Corp , 日本電気株式会社
发明人： MOMO HIDEAKI
IPC分类号： H03D7/14 , H03F1/56 , H03F3/30
CPC分类号： H03D7/1425 , H03D7/1433 , H03D7/1458 , H03D2200/0088 , H03D2200/009
摘要： PROBLEM TO BE SOLVED: To provide a frequency conversion circuit having an output amplifier with less current consumption and a high gain without the need for increasing a local oscillation frequency signal leaking to an output signal.
SOLUTION: A push-pull amplifier is configured such that the amplifier is provided with: a first transistor to the collector of which a prescribed voltage higher than a ground level is applied; and a second transistor whose collector is connected to the emitter of the first transistor, the amplifier amplifies the difference signal between two signals given to the base of the second transistor and provides an output from a connecting point between the emitter of the function transistor and the collector of the second transistor, and has a voltage drop circuit to apply a voltage lower than a power supply voltage to the collector of the first transistor. Furthermore, the frequency conversion circuit is configured to include the push-pull amplifier as its output amplifier.
COPYRIGHT: (C)2004,JPO

45. 发明专利

JP3504731B2 Active mixer 失效
公开(公告)号：JP3504731B2
公开(公告)日：2004-03-08
申请号：JP16898994
申请日：1994-06-28
申请人：アジレント・テクノロジーズ・インク
发明人：ナット・エム・ギュエン
IPC分类号： H03D7/14
CPC分类号： H03F3/45197 , H03D7/1425 , H03D7/1433 , H03D7/1441 , H03D7/1458 , H03D2200/0019 , H03F2203/45148 , H03F2203/45151 , H03F2203/45458 , H03F2203/45464 , H03F2203/45496

46. 发明专利

JP3504179B2 Frequency conversion circuit 有权
公开(公告)号：JP3504179B2
公开(公告)日：2004-03-08
申请号：JP6144099
申请日：1999-03-09
申请人：株式会社東芝
发明人：章二大高 , 隆文山路 , 理渡辺 , 洋谷本
IPC分类号： H03D7/00 , H03D7/14 , H03D7/18
CPC分类号： H03D7/1433 , H03D7/1425 , H03D7/1441

47. 发明专利

JP3386019B2 The mixer circuit 有权
公开(公告)号：JP3386019B2
公开(公告)日：2003-03-10
申请号：JP30479199
申请日：1999-10-27
申请人：日本電気株式会社
发明人：正浩藤井
IPC分类号： H03D7/00 , H03D7/14
CPC分类号： H03D7/1425 , H03D7/1433 , H03D7/1441 , H03D7/1458 , H03D7/1491 , H03D2200/0025

48. 发明专利

JP2003017944A Frequency converter and wireless communication unit employing the same 有权
标题翻译：频率转换器和无线通信单元使用它们
公开(公告)号：JP2003017944A
公开(公告)日：2003-01-17
申请号：JP2001200160
申请日：2001-06-29
申请人： Toshiba Corp , 株式会社東芝
发明人： OTAKA SHOJI
IPC分类号： H03D7/00 , H03D7/14 , H04B1/26 , H04B1/40
CPC分类号： H03D7/1425 , H03D7/1433 , H03D7/1441 , H03D2200/0025 , H03H7/19
摘要： PROBLEM TO BE SOLVED: To provide a frequency converter that can reduce distortion without much increasing the operating current. SOLUTION: In the frequency converter, a main mixer 3 for applying frequency conversion to an input RF signal with a local signal at a prescribed conversion gain and a distortion compensation mixer 4 for applying frequency conversion to the input RF signal with the local signal at a conversion gain lower than that of the main mixer 3 are arranged in parallel, and an adder circuit 5 sums an output signal from the main mixer and an output signal from the distortion compensation mixer in a relation of the inverted phase to each other to generate a frequency conversion output signal.
摘要翻译：要解决的问题：提供可以在不大大增加工作电流的情况下减少失真的变频器。解决方案：在频率转换器中，用于以规定的转换增益对具有本地信号的输入RF信号进行频率转换的主混频器3和用于以一定的转换增益的本地信号向输入RF信号施加频率转换的失真补偿混频器4 转换增益低于主混频器3的转换增益，并且加法器电路5将来自主混频器的输出信号和来自失真补偿混频器的输出信号以倒置相位的关系相加，以产生变频输出信号。

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