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1.发明授权Gain controllable low noise amplifier with automatic linearity enhancement and method of doing same 有权增益可控的低噪声放大器，具有自动线性增强和相同的方法公开(公告)号：US06288609B1
公开(公告)日：2001-09-11
申请号：US09515742
申请日：2000-02-29
申请人： Daniel E. Brueske , David J. Graham
发明人： Daniel E. Brueske , David J. Graham
IPC分类号： H03G320
CPC分类号： H03G1/0023 , H03G3/3052
摘要： A gain controllable low noise amplifier (LNA) (200) with automatic linearity enhancement utilizes an amplifier stage (203) for amplifying a radio frequency (RF) input signal and a dynamically controllable feedback loop amplifier stage (205) for providing negative feedback to the feedback amplifier. A bias controller (213) is coupled to the dynamically controllable feedback loop amplifier stage (203) for monitoring a receiver automatic gain control (AGC) system (211) and providing a dynamic bias to the feedback loop amplifier stage (205) to improve linearity to the LNA in the presence of strong on-channel and off-channel signal conditions.
摘要翻译： 具有自动线性度增强的增益可控低噪声放大器（200）利用放大级（203）来放大射频（RF）输入信号和动态可控的反馈环放大器级（205），用于向 反馈放大器。 偏置控制器（213）耦合到动态可控的反馈环路放大器级（203），用于监视接收机自动增益控制（AGC）系统（211）并向反馈环路放大器级（205）提供动态偏置以改善线性度 在存在强信道和非通道信号条件的情况下向LNA发送。
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公开(公告)号：US5894592A
公开(公告)日：1999-04-13
申请号：US839290
申请日：1997-04-17
CPC分类号： H03C3/0975 , H03C3/0941 , H03C3/0966 , H04B1/005 , H04B1/0057 , H04B1/0092 , H04B1/40
摘要： A wideband phase-lock loop frequency synthesizer (200) used in a radio transceiver capable of being reconfigured to operate in either a transmit, receive, or battery save mode. The wideband phase-lock loop frequency synthesizer (200) includes, a divide-by-two divider (205), quadrature detector (204), offset VCO (209) and offset mixer (207) for generating a quadrature phase modulated signal. Moreover, a programmable filter (211) is used for removing predetermined harmonic components of the offset mixed signal enabling the synthesizer to operate over a wide frequency range.
摘要翻译： 一种用于无线电收发机的宽带锁相环频率合成器（200），能够被重新配置为在发射，接收或电池节省模式下工作。 宽带锁相环频率合成器（200）包括用于产生正交相位调制信号的除以二分频器（205），正交检波器（204），偏移VCO（209）和偏移混频器（207）。 此外，可编程滤波器（211）用于去除偏移混合信号的预定谐波分量，使合成器能够在宽的频率范围内工作。
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3.发明授权Two port voltage controlled oscillator for use in wireless personal area network synthesizers 有权两端口压控振荡器，用于无线个域网络合成器公开(公告)号：US06987423B2
公开(公告)日：2006-01-17
申请号：US10643310
申请日：2003-08-19
IPC分类号： H03L7/00
CPC分类号： H03B5/20
摘要： A voltage controlled oscillator (VCO) for use in a personal area network synthesizer includes a delay cell (100), a first current amplifier (201, 203) for amplifying an input current, a resister capacitor (RC) tuning network (207, 209, 211) for varying the amount of amplification and delay of an output of the first current amplifier. A second current amplifier (213, 215) is then used for amplifying an output current from the RC tuning network. The invention includes a unique composite voltage variable capacitor (CVVC) (300) for precisely tuning the amount of delay presented by the delay cell. The unique topology of the delay cell (100) allows it to be readily used in voltage controlled oscillators (VCOs) operable at frequencies above 1 GHz.
摘要翻译： 用于个人区域网络合成器的压控振荡器（VCO）包括延迟单元（100），用于放大输入电流的第一电流放大器（201,203），电阻电容器（RC）调谐网络（207,209） ，211），用于改变第一电流放大器的输出的放大量和延迟量。 然后，第二电流放大器（213,215）用于放大来自RC调谐网络的输出电流。 本发明包括用于精确调节由延迟单元呈现的延迟量的独特的复合电压可变电容器（CVVC）（300）。 延迟单元（100）的独特拓扑允许其容易地用于在1GHz以上的频率下工作的压控振荡器（VCO）。
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公开(公告)号：US06670901B2
公开(公告)日：2003-12-30
申请号：US09919554
申请日：2001-07-31
申请人： Daniel E. Brueske , Babak Bastani
发明人： Daniel E. Brueske , Babak Bastani
IPC分类号： H03M162
CPC分类号： H04B1/0032 , H03G3/3052 , H04B1/0003 , H04B1/0039 , H04B1/109
摘要： A dynamic range on demand radio frequency (RF) receiver (300) includes a wideband detector (303), off-channel detector (313) and on-channel detector (327) supplying input to an automatic gain control (307) for adjusting a dynamic control stage to control dynamic range and resolution of digital baseband signals (329, 331).
摘要翻译： 动态范围点播射频（RF）接收机（300）包括向自动增益控制器（307）提供输入的宽带检测器（303），离线通道检测器（313）和通道检测器（327） 动态控制级控制数字基带信号的动态范围和分辨率（329,331）。
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5.发明授权Fully integrated two-way radio transmitter utilizing current mode transmit buffer and method of using same 失效使用电流模式发送缓冲器的完全集成的双向无线电发射机及其使用方法
公开(公告)号：US5893027A
公开(公告)日：1999-04-06
申请号：US740939
申请日：1996-11-05
申请人： Daniel E. Brueske
发明人： Daniel E. Brueske
CPC分类号： H04B1/04
摘要： A wideband fully integrated two-way radio transmitter (100) includes a voltage controlled oscillator (VCO) (101) for providing a voltage at a radio frequency. A divider (103) is used reducing the radio frequency (RF) signal from the VCO to a an intermediate frequency. A voltage-to-current converter is used for changing the voltage of the intermediate frequency RF signal to an RF current. A transmit buffer is then used for amplifying the RF current supplied by the voltage-to-current converter for amplification by a power amplifier. The fully integrated current mode transmit buffer offers the advantage of amplification over a large bandwidth while providing isolation between the transmit buffer and the VCO.
摘要翻译： 宽带完全集成的双向无线电发射机（100）包括用于提供射频电压的压控振荡器（VCO）（101）。 使用分频器（103）将来自VCO的射频（RF）信号降低到中频。 使用电压 - 电流转换器将中频RF信号的电压改变为RF电流。 然后使用发射缓冲器来放大由电压 - 电流转换器提供的RF电流，以便由功率放大器进行放大。 完全集成的电流模式发送缓冲器提供了在大带宽上放大的优点，同时在发送缓冲器和VCO之间提供隔离。
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6.发明授权System and method for coarse tuning a phase locked loop (PLL) synthesizer using 2-PI slip detection 有权使用2-PI滑移检测来粗调锁相环（PLL）合成器的系统和方法公开(公告)号：US06774732B1
公开(公告)日：2004-08-10
申请号：US10367007
申请日：2003-02-14
IPC分类号： H03L7085
摘要： A system for coarsely tuning at least one voltage controlled oscillator (VCO) (211) in a phase locked loop (PLL) synthesizer (200) that includes a phase-frequency detector (PFD) for determining a phase difference between a VCO frequency and a reference frequency and providing an error signal if the VCO frequency and reference frequency are at least 2&pgr; radians out of phase. A monitor (215) is then used for tracking the number of error signals produced by the PFD. The free running frequency of the VCO may be coarsely tuned in the event the monitor circuit reaches some predetermined level. The invention offers great advantage in enabling a PLL to be coarsely tuned to enable the PLL's VCO to remain with an operational range despite operational factors that effect circuit operation.
摘要翻译： 一种用于在锁相环（PLL）合成器（200）中粗调谐至少一个压控振荡器（VCO）（211）的系统，该系统包括用于确定VCO频率与VCO频率之间的相位差的相位 - 频率检测器（PFD） 参考频率，并且如果VCO频率和参考频率相位至少为2pi弧度，则提供误差信号。 然后使用监视器（215）来跟踪由PFD产生的误差信号的数量。 在监控电路达到某一预定水平的情况下，VCO的自由运行频率可能会被粗调。 本发明提供了极大的优点，即使PLL能够被粗调，以使PLL的VCO保持在操作范围，尽管影响电路操作的操作因素。
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7.发明授权Apparatus and method for generating accurate quadrature over a frequency range 有权用于在频率范围内产生精确正交的装置和方法公开(公告)号：US06222405B1
公开(公告)日：2001-04-24
申请号：US09507722
申请日：2000-02-22
IPC分类号： H03H1116
CPC分类号： H03H11/16
摘要： The invention produces an accurate quadrature relationship for a range of frequencies using passive components in the primary quadrature splitting circuits. A reference oscillator (202) generates a reference signal which is fed to a conventional passive quadrature splitter circuit (204). However, since the reference circuit provides signals over a range of frequencies, the output signals of the passive quadrature splitter may not have an accurate quadrature relationship. The output signals of the passive quadrature splitter are then equalized in magnitude, and the sum and difference of the signals are produced, which will be in an accurate quadrature relationship.
摘要翻译： 本发明使用主要正交分离电路中的无源部件在一定频率范围内产生精确的正交关系。 参考振荡器（202）产生馈送到常规无源正交分离器电路（204）的参考信号。 然而，由于参考电路在一定范围的频率上提供信号，所以无源正交分离器的输出信号可能不具有精确的正交关系。 然后，无源正交分波器的输出信号在幅度上相等，并且产生信号的和和差，这将在精确的正交关系中。
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