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公开(公告)号：US07831210B1
公开(公告)日：2010-11-09
申请号：US11607610
申请日：2006-12-01
IPC分类号： H04B1/38
CPC分类号： H04B1/0057
摘要： The present invention is a MEMS-based broadband transceiver/sensor.A MEMS-based transceiver/sensor in accordance with the present invention may comprise: (a) an antenna; (b) a front-end triplexer block; (c) a plurality of N transceiving channels; and (d) an RF energy sensor. The front end triplexer block may comprise M triplexers, each triplexer having MEMS-based filters. The transceiving channels may each comprise: (i) a local oscillator; (ii) a mixer; (iii) a first N:1 MEMS-based switch; (iv) a plurality of N MEMS-based variable bandwidth bandpass filters; and (v) a second N:1 MEMS-based switch. The RF energy sensor may comprise: (vi) an M:1 MEMS-based switch; (vii) a local oscillator; (viii) a mixer; and (ix) a plurality of MEMS-based variable bandwidth bandpass filters.
摘要翻译： 本发明是基于MEMS的宽带收发器/传感器。 根据本发明的基于MEMS的收发器/传感器可以包括：（a）天线; （b）前端三路复合器块; （c）多个N个收发信道; 和（d）RF能量传感器。 前端三工器块可以包括M三工器，每个三工器具有基于MEMS的滤波器。 收发信道可以各自包括：（i）本地振荡器; （ii）混合器; （iii）第一N：1个基于MEMS的开关; （iv）多个基于N个MEMS的可变带宽带通滤波器; 和（v）第二N：1个基于MEMS的开关。 RF能量传感器可以包括：（vi）M：1个基于MEMS的开关; （vii）本地振荡器; （viii）混合器; 和（ix）多个基于MEMS的可变带宽带通滤波器。
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公开(公告)号：US07403756B1
公开(公告)日：2008-07-22
申请号：US11603392
申请日：2006-11-22
CPC分类号： H04B1/0096 , H04B1/0007 , H04B1/18 , H04B1/30
摘要： The present invention is directed to a highly-integrated MEMS-based miniaturized transceiver. The transceiver utilizes a low band front-end to direct sample low band signals and a high band front-end to translate high band signals that cannot be directly sampled to low band before low band front-end processing. The low band front-end comprises an array of High-Q MEMS (microelectromechanical systems)-based filters/resonators separated by isolation amplifiers in selectable cascade with narrower bandwidth filters. Dynamic tuning ability is provided through the isolation amplifiers and the sample frequency of the analog-to-digital converter. This architecture is amenable to monolithic fabrication. The input frequency range is scalable with analog-to-digital conversion sampling rate improvements. Re-utilization of filters is spatially efficient and cost effective. Tuning time is limited only by the analog-to-digital conversion and digital signal processing, not synthesizer settling times. This architecture eliminates major sources of traditional intermodulation distortion and reduces complex hardware, increasing reliability.
摘要翻译： 本发明涉及一种高度集成的基于MEMS的小型化收发器。 收发器利用低频前端来引导采样低频带信号和高频带前端，以便在低频带前端处理之前，将不能直接采样到低频段的高频带信号进行转换。 低频带前端包括由具有窄带宽滤波器的可选级联的隔离放大器隔开的高Q MEMS（微机电系统）基滤波器/谐振器阵列。 通过隔离放大器和模数转换器的采样频率提供动态调谐能力。 这种架构适合于单片制造。 输入频率范围可以通过模数转换采样率提升来扩展。 过滤器的再利用在空间上是有效的并且具有成本效益。 调谐时间仅限于模数转换和数字信号处理，而不是合成器建立时间。 该架构消除了传统互调失真的主要来源，并降低了复杂的硬件，提高了可靠性。
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公开(公告)号：US06542044B1
公开(公告)日：2003-04-01
申请号：US09659230
申请日：2000-09-11
IPC分类号： H03L100
CPC分类号： H03L7/1974 , H03L1/025 , H03L7/1976
摘要： An integrated frequency source with an integrated frequency standard and an integrated frequency synthesizer is disclosed. A voltage-controlled oscillator in the frequency standard is eliminated with a resulting improvement in phase noise. A reference frequency in the frequency standard is provided directly to the frequency synthesizer. The integrated frequency source is put on frequency over temperature by storing reference frequency errors over temperature in a lookup table, measuring the temperature, and calculating in a microprocessor synthesizer control data that offsets the synthesizer to compensate for reference frequency errors.
摘要翻译： 公开了具有集成频率标准的集成频率源和集成频率合成器。 消除了频率标准中的压控振荡器，从而导致相位噪声的改善。 频率标准中的参考频率直接提供给频率合成器。 通过将查找表中的参考频率误差存储在查找表中，测量温度，并在微处理器合成器中控制数据来补偿合成器以补偿参考频率误差，将集成频率源放在频率过高的温度上。
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公开(公告)号：US07173497B1
公开(公告)日：2007-02-06
申请号：US10982969
申请日：2004-11-05
IPC分类号： H03B1/00
摘要： The present invention is an apparatus for efficiently providing an output frequency signal based upon an input voltage. The sampling voltage controlled oscillator of the present invention may include a voltage controlled oscillator coupled with sample and hold circuitry. The voltage controlled oscillator frequency of the sampling voltage controlled oscillator may be a lower frequency whereby the voltage controlled oscillator frequency is sampled by the sample and hold circuitry to derive a higher frequency signal. Advantageously, the overall power consumption of sampling voltage controlled oscillator may be less than conventional voltage controlled oscillators.
摘要翻译： 本发明是一种用于基于输入电压有效地提供输出频率信号的装置。 本发明的采样压控振荡器可以包括与采样和保持电路耦合的压控振荡器。 采样压控振荡器的压控振荡器频率可能是较低的频率，由此压控振荡器频率由采样和保持电路采样以导出较高频率信号。 有利地，采样压控振荡器的总功耗可以小于常规的压控振荡器。
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5.发明授权Low phase noise MEMS-based oscillator with bifurcation and parametric noise squeezing 有权具有分岔和参数噪声挤压的低相位噪声基于MEMS的振荡器公开(公告)号：US08466754B1
公开(公告)日：2013-06-18
申请号：US13152685
申请日：2011-06-03
申请人： Vadim Olen , Jonathan A. Lovseth , Robert C. Potter , Robert A. Newgard , Roy H. Olsson, III , Kenneth E. Wojciechowski
发明人： Vadim Olen , Jonathan A. Lovseth , Robert C. Potter , Robert A. Newgard , Roy H. Olsson, III , Kenneth E. Wojciechowski
IPC分类号： H03B5/30
CPC分类号： H03B5/30 , H03B2200/009
摘要： The present invention is a method for reducing phase noise in oscillator signals. For example, the oscillator may be a low phase noise MEMS-based oscillator and may include a resonator (ex.—a MEMS resonator). Further, the resonator of the oscillator may be operated near a bifurcation point. Still further, the MEMS resonator may be parametrically pumped in such a way so as to redistribute the quadrature signal noise (ex.—phase noise) to in-phase noise (ex.—amplitude noise).
摘要翻译： 本发明是一种降低振荡器信号相位噪声的方法。 例如，振荡器可以是低相位噪声的基于MEMS的振荡器，并且可以包括谐振器（例如MEMS谐振器）。 此外，振荡器的谐振器可以在分叉点附近操作。 此外，MEMS谐振器可以以这样的方式被参数泵浦，以便将正交信号噪声（例如相位噪声）重新分配到同相噪声（例如振幅噪声）。
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公开(公告)号：US5301366A
公开(公告)日：1994-04-05
申请号：US864988
申请日：1992-04-07
CPC分类号： H03L7/23
摘要： A communication system and a method for using an approximating frequency synthesizer with frequency correction by digital signal processing (DSP) means to provide a radio transmitter or receiver with rapid high resolution tuning capabilities. A user selects a frequency upon which he wishes to transmit or receive information. An approximating synthesizer is used to provide an RF injection frequency. A radio controller interprets the user selected frequency and determines the closet available approximating synthesizer frequency. The controller commands the approximating synthesizer to the determined available frequency and calculates the difference in the determined available frequency and the user selected frequency. The calculated difference or error is passed on to the DSP for correction during frequency mixing in a single or multiple step process.
摘要翻译： 通过数字信号处理（DSP）使用具有频率校正的近似频率合成器的通信系统和方法意味着为无线电发射机或接收机提供快速的高分辨率调谐能力。 用户选择他希望发送或接收信息的频率。 近似合成器用于提供射频注入频率。 无线电控制器解释用户选择的频率，并确定衣柜可用近似合成器频率。 控制器将近似合成器命令为确定的可用频率，并计算所确定的可用频率和用户选择的频率之间的差异。 计算的差异或误差在单个或多个步骤过程中在频率混合期间传递给DSP进行校正。
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公开(公告)号：US08031010B1
公开(公告)日：2011-10-04
申请号：US12566481
申请日：2009-09-24
CPC分类号： H03L7/26 , G04F5/145 , H03L1/022 , H03L7/0805
摘要： The present invention is a Chip Scale Atomic Clock (CSAC)-enabled Time and Frequency Standard (CTFS) architecture. The CTFS architecture includes a microcontroller, a Time Compensated Crystal Oscillator (TCCO) circuit which is connected to the microcontroller, and a Chip Scale Atomic Clock (CSAC) which is connected to the microcontroller. The microcontroller is configured for selectively causing the CTFS to provide a TCCO circuit-based output frequency when the CTFS has not locked to a predetermined atomic resonance, and is further configured for causing the CTFS to provide a CSAC-based output frequency when the CTFS has locked to a predetermined atomic resonance.
摘要翻译： 本发明是一种基于芯片级原子钟（CSAC）的时间和频率标准（CTFS）架构。 CTFS架构包括微控制器，连接到微控制器的时间补偿晶体振荡器（TCCO）电路和连接到微控制器的芯片级原子钟（CSAC）。 微控制器被配置为当CTFS未锁定到预定的原子共振时，选择性地使CTFS提供基于TCCO电路的输出频率，并且还被配置为当CTFS具有基于CSAC的输出频率时，CTFS提供基于CSAC的输出频率 锁定到预定的原子共振。
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公开(公告)号：US07436921B1
公开(公告)日：2008-10-14
申请号：US10982968
申请日：2004-11-05
CPC分类号： H04L7/033 , H03D13/003 , H04L7/0087
摘要： The present invention is an apparatus for determining the phase difference between a reference frequency signal and an input signal. The frequency sampling phase detector of the present invention may include a phase detector coupled with sample and hold circuitry. The frequency sampling phase detector of the present invention may reduce the frequency of an input signal suitable for proportional and linear phase detection by the phase detector. Advantageously, the frequency sampling phase detector of the present invention may reduce power consumption over conventional phase detectors in combination with frequency dividers.
摘要翻译： 本发明是用于确定参考频率信号和输入信号之间的相位差的装置。 本发明的频率采样相位检测器可以包括与采样和保持电路耦合的相位检测器。 本发明的频率采样相位检测器可以降低适用于相位检测器的比例和线性相位检测的输入信号的频率。 有利地，本发明的频率采样相位检测器可以与分频器相结合地降低传统相位检测器的功耗。
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