公开(公告)号：US06832081B1

公开(公告)日：2004-12-14

申请号：US09689547

申请日：2000-10-12

申请人： Nobuki Hiramatsu ,  Takeshi Okamura ,  Kazuki Hayata ,  Yoshitake Terashi ,  Hironori Kii ,  Hiroshi Uchimura ,  Akinori Sato

发明人： Nobuki Hiramatsu ,  Takeshi Okamura ,  Kazuki Hayata ,  Yoshitake Terashi ,  Hironori Kii ,  Hiroshi Uchimura ,  Akinori Sato

IPC分类号： H04B126

CPC分类号： H01P3/165 ,  H01Q13/28

摘要： A NRD guide includes a pair of parallel plate conductors opposed to each other at a spacing equal to or shorter than half the wavelength of a high-frequency signal to be transmitted and having opposing inner surfaces whose arithmetic average roughness Ra satisfies 0.1 &mgr;m≦Ra≦50 &mgr;m, and a dielectric strip arranged between the pair of parallel plate conductors and held in contact with the respective inner surfaces of the parallel plate conductors. The dielectric strip is strongly secured to the inner surfaces to exhibit an excellent durability. The transmission loss of the high-frequency signal can be effectively suppressed.

摘要翻译： NRD引导件包括一对彼此相对的平行板导体，其间隔等于或短于要传输的高频信号的波长的一半，并且具有相对的内表面，其算术平均粗糙度Ra满足0.1μm

公开(公告)号：US06810240B2

公开(公告)日：2004-10-26

申请号：US09776949

申请日：2001-02-05

申请人： Günter Donig ,  Josef Schmal

发明人： Günter Donig ,  Josef Schmal

IPC分类号： H04B126

CPC分类号： G06G7/163

摘要： The analog multiplier has a MOS input stage. This makes it possible to increase the linearity range of the multiplier. In a development, a cascode circuit having an additional pair of bipolar transistors is provided, which makes it possible to achieve a higher linearity without increasing the supply voltage. The analog multiplier is particularly suitable as a down-converter in a reception path of a mobile radio system.

摘要翻译： 模拟乘法器具有MOS输入级。 这使得可以增加乘法器的线性范围。 在一个发展中，提供了具有附加的一对双极晶体管的共源共栅电路，这使得可以在不增加电源电压的情况下实现更高的线性度。 模拟乘法器特别适用于移动无线电系统的接收路径中的下变频器。

公开(公告)号：US06807407B2

公开(公告)日：2004-10-19

申请号：US09846083

申请日：2001-05-02

申请人： Daxiong Ji

发明人： Daxiong Ji

IPC分类号： H04B126

CPC分类号： H03D7/1441 ,  H03D7/1458 ,  H03D7/1483 ,  H03D7/1491 ,  H03D2200/0023 ,  H03D2200/0084 ,  H03D2200/009

摘要： A double balanced mixer for mixing an RF input signal with a local oscillator signal to provide at an output an intermediate frequency signal with a high third order intercept point. A first and second local oscillator balun receives a local oscillator signal. A first and second RF balun receives a RF signal. A first mixer is coupled to the first local oscillator balun and the first RF balun. A second mixer is coupled in parallel with the first mixer. The second mixer is coupled to the second local oscillator balun and the second RF balun. The parallel coupled mixers provide an intermediate frequency signal. A first intermediate frequency balun is coupled to the first mixer and a second intermediate frequency balun is coupled to the second mixer. The mixer also has increased isolation.

摘要翻译： 一种用于将RF输入信号与本地振荡器信号混合的双平衡混频器，以在输出端提供具有高三阶截取点的中频信号。 第一和第二本地振荡器平衡不平衡变换器接收本地振荡器信号。 第一和第二RF平衡 - 不平衡变换器接收RF信号。 第一混频器耦合到第一本地振荡器平衡 - 不平衡转换器和第一RF平衡 - 不平衡转换器。 第二混合器与第一混合器并联耦合。 第二混频器耦合到第二本地振荡器平衡 - 不平衡转换器和第二RF平衡 - 不平衡转换器。 并联耦合的混频器提供中频信号。 第一中间频率平衡 - 不平衡变换器耦合到第一混频器，并且第二中频变压器耦合到第二混频器。 混音器也增加了隔离度。

公开(公告)号：US06804261B2

公开(公告)日：2004-10-12

申请号：US10277516

申请日：2002-10-21

申请人： James R. Snider

发明人： James R. Snider

IPC分类号： H04B126

CPC分类号： H04W88/06 ,  H04J3/12 ,  H04W24/00 ,  H04W88/02

摘要： A dual-band receiver for a wireless communication device having multi-slot capability. A first oscillator generates a relatively high frequency traffic LO signal. A second oscillator generates a first relatively low frequency signal, and a third oscillator generates a fixed low frequency signal. A first mixer mixes the first and fixed low frequency signals to produce a relatively high frequency monitor LO signal. A switch selects the traffic LO signal when the receiver is in a traffic slot and the monitor LO signal when the receiver is in a monitor slot. The selected LO signal is provided to a second mixer along with the received signal to produce a first IF signal. A third mixer mixes the first IF signal and the fixed frequency signal to produce an output signal.

摘要翻译： 一种用于具有多时隙能力的无线通信设备的双频带接收机。 第一振荡器产生相对较高频率的业务LO信号。 第二振荡器产生第一相对低频信号，第三振荡器产生固定的低频信号。 第一混频器混合第一和固定低频信号以产生相对较高频率的监视器LO信号。 当接收机处于业务插槽中时，交换机选择业务LO信号，并且当接收机处于监视器时隙中时，监视器LO信号。 选择的LO信号与接收信号一起提供给第二混频器以产生第一IF信号。 第三混频器混合第一IF信号和固定频率信号以产生输出信号。

公开(公告)号：US06754480B1

公开(公告)日：2004-06-22

申请号：US09552938

申请日：2000-04-20

申请人： Syuichi Tsuda

发明人： Syuichi Tsuda

IPC分类号： H04B126

CPC分类号： H04B1/28 ,  H03D1/04

摘要： A baseband analog circuit includes a demodulator to demodulate a received signal and to output a baseband analog signal, a low-pass filter to filter the demodulated baseband analog signal, and an impedance converter, provided between the demodulator and the low-pass filter, having lower output impedance than the output impedance of the demodulator.

摘要翻译： 基带模拟电路包括用于解调接收信号并输出​​基带模拟信号的解调器，用于滤波解调的基带模拟信号的低通滤波器和设置在解调器和低通滤波器之间的阻抗转换器，具有 输出阻抗比解调器的输出阻抗低。

公开(公告)号：US06748206B1

公开(公告)日：2004-06-08

申请号：US09337849

申请日：1999-06-21

申请人： Mariko Matsumoto

发明人： Mariko Matsumoto

IPC分类号： H04B126

CPC分类号： H04L27/2338 ,  H04L25/02

摘要： A radio receiver includes a device for decreasing the data rate of reception data in accordance with the channel frequency of the reception data, and a device for performing signal processing for the reception data whose data rate has been decreased.

摘要翻译： 无线电接收机包括：用于根据接收数据的信道频率降低接收数据的数据速率的装置;以及用于对数据速率降低的接收数据执行信号处理的装置。

公开(公告)号：US06701142B1

公开(公告)日：2004-03-02

申请号：US09328252

申请日：1999-06-08

申请人： Johannes H. A. Brekelmans

发明人： Johannes H. A. Brekelmans

IPC分类号： H04B126

CPC分类号： H03J5/244

摘要： A mixer oscillator stage, which can be used both with a switched 2-band concept and a 3-band concept without changing the architecture of the oscillators which exceeds the number of mixers and by coupling the mixer(s) and oscillators via a switching circuit so as to switch between the different oscillators in dependence upon the part of the band converging the signal.

摘要翻译： 一种混频器振荡器级，其可以与切换的2频带概念和3频带概念一起使用，而不改变超过混频器数量的振荡器的架构，并且经由开关电路耦合混频器和振荡器 以便根据收敛信号的频带的一部分在不同振荡器之间切换。

公开(公告)号：US06640095B2

公开(公告)日：2003-10-28

申请号：US10147235

申请日：2002-05-15

申请人： Norio Nakajima ,  Harufumi Mandai

发明人： Norio Nakajima ,  Harufumi Mandai

IPC分类号： H04B126

CPC分类号： H03B19/05 ,  H05K1/0237 ,  H05K1/162 ,  H05K1/165 ,  H05K1/181

摘要： A compact frequency multiplier can perform high-degree frequency multiplication and can be incorporated in a wireless device. The frequency multiplier includes an input terminal for inputting an input signal, a first resonant circuit resonating with the frequency &ohgr; of the input signal, a second resonant circuit and an idler circuit, which resonate with the frequency n·&ohgr; that is, n times the frequency of the input signal, a variable reactor such as a varactor diode, coupling-adjusting capacitors, a bias resistor, and an output terminal for outputting multiplied output signals. In one embodiment, the frequency multiplier is a current-excitation type. The first resonant circuit and the second resonant circuit, each of which is constituted of an LC series resonant circuit, are connected in series between the input terminal and the output terminal. In addition, a parallel circuit constituted of the idler circuit and the varactor diode is connected to a connection point between the first and second resonant circuits and the input terminal and the output terminal.

公开(公告)号：US06633194B2

公开(公告)日：2003-10-14

申请号：US09935574

申请日：2001-08-24

申请人： Torkel Arnborg ,  Christian Nyström

发明人： Torkel Arnborg ,  Christian Nyström

IPC分类号： H04B126

CPC分类号： H03D7/1441 ,  H03D7/1458 ,  H03D7/1466 ,  H03D7/1483 ,  H03D2200/0043

摘要： A mixer includes a first terminal and a second terminal forming a first input port for receiving a first signal having a first frequency; a second input port for receiving a second signal having a second frequency; a mixer output port for a resulting signal; a first group of valves having their control inputs coupled to the first terminal for receiving the first signal; a second group of valves having their control inputs coupled to the second terminal for receiving the first signal; and a third group of two valves having their control inputs coupled for receiving the second signal. The valves co-operate such that in operation the mixer produces the resulting signal responsive to the first and second signals. The mixer also includes at least one passive low pass filter having an inductor, the low pass filter being connected to the control input of a valve in the first and second groups.

摘要翻译： 混合器包括：第一端子和第二端子，形成用于接收具有第一频率的第一信号的第一输入端口; 用于接收具有第二频率的第二信号的第二输入端口; 用于产生信号的混频器输出端口; 第一组阀门，其控制输入端耦合到第一端子，用于接收第一信号; 第二组阀门，其控制输入端耦合到第二端子，用于接收第一信号; 以及第三组两个阀，其控制输入被耦合用于接收第二信号。 阀合作使得在操作中，混合器响应于第一和第二信号产生所得到的信号。 混合器还包括至少一个具有电感器的无源低通滤波器，低通滤波器连接到第一组和第二组中的阀的控制输入端。

公开(公告)号：US06615031B1

公开(公告)日：2003-09-02

申请号：US09568033

申请日：2000-05-10

申请人： Ulrich L. Rohde ,  Klaus Danzeisen

发明人： Ulrich L. Rohde ,  Klaus Danzeisen

IPC分类号： H04B126

CPC分类号： H03D7/00

摘要： In a heterodyne stage having a separating filter providing broadband termination for an output of a mixer, a resistance having the value of a system impedance is arranged between the separating filter and a following intermediate-frequency filter, the resistor being interconnected with a resonance element tuned to the intermediate frequency in such a way that the resistor, at the intermediate frequency, has minimal attenuation of the useful signal and, at all other frequencies, terminates the output of the mixer with the system impedance.

摘要翻译： 在具有提供用于混频器的输出的宽带终端的分离滤波器的外差级中，具有系统阻抗值的电阻被布置在分离滤波器和随后的中频滤波器之间，该电阻器与调谐的谐振元件互连 以中间频率的方式使得中间频率的电阻具有有用信号的最小衰减，并且在所有其它频率处，终端具有系统阻抗的混频器的输出。