公开(公告)号：US06804261B2

公开(公告)日：2004-10-12

申请号：US10277516

申请日：2002-10-21

Applicant: James R. Snider

Inventor： James R. Snider

IPC: H04B126

CPC classification number: H04W88/06 ,  H04J3/12 ,  H04W24/00 ,  H04W88/02

Abstract: 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.

Abstract translation: 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：US06466768B1

公开(公告)日：2002-10-15

申请号：US09330646

申请日：1999-06-11

Applicant: Darioush Agahi-Kesheh ,  James R. Snider

Inventor： Darioush Agahi-Kesheh ,  James R. Snider

IPC: H04B144

CPC classification number: H04B1/006 ,  H04B1/005 ,  H04B1/406

Abstract: A filter system comprising three or more filters, each having different passbands, and an impedance adjusting network coupled between a filter system ports and each of the ports of at least two of the filters to adjust the port impedances of the filters coupled to the network. The adjusted port impedance of each filter at a frequency representative of at least one of the other filters coupled to the network is at a non-loading level. In one embodiment, the filter system is configured for use in a wireless communication receiver and/or handset.

Abstract translation: 滤波器系统，包括三个或更多个滤波器，每个滤波器具有不同的通带，以及阻抗调整网络，耦合在滤波器系统端口与至少两个滤波器的每个端口之间，以调整耦合到网络的滤波器的端口阻抗。 以代表耦合到网络的其他滤波器中的至少一个的频率的每个滤波器的调整端口阻抗处于非负载水平。 在一个实施例中，滤波器系统被配置为用于无线通信接收机和/或手持机。

公开(公告)号：US5821820A

公开(公告)日：1998-10-13

申请号：US950874

申请日：1997-08-15

Applicant: James R. Snider ,  Glen O. Reeser

Inventor： James R. Snider ,  Glen O. Reeser

IPC: H03B1/00 ,  H03B5/02 ,  H03B5/12 ,  H03B5/18 ,  H03B7/06

CPC classification number: H03B5/1847 ,  H03B5/1209 ,  H03B5/1231 ,  H03B5/1243 ,  H03B2200/004 ,  H03B2200/0048 ,  H03B2200/0086 ,  H03B2201/0208 ,  H03B7/06

Abstract: A voltage controlled oscillator operable on two widely separated frequency bands, such as 900 MHz and 1.8 GHz for example. The voltage controlled oscillator includes two negative resistance generators (32, 34) which share a common tunable tank circuit (26) and a common impedance matched combiner circuit (28) which provides the RF output (36). The VCO uses only one varactor (30) to tune both frequency bands. Separate negative resistance generators (32, 34) are used to provide optimum frequency selectivity within each frequency band.

Abstract translation: 压控振荡器可在两个广泛分离的频带上工作，例如900MHz和1.8GHz。 压控振荡器包括两个负电阻发生器（32,34），它们共用共同的可调谐振荡电路（26）和提供RF输出（36）的公共阻抗匹配组合器电路（28）。 VCO仅使用一个变容二极管（30）来调谐两个频带。 单独的负电阻发生器（32,34）用于在每个频带内提供最佳的频率选择性。

公开(公告)号：US06982594B2

公开(公告)日：2006-01-03

申请号：US10712136

申请日：2003-11-13

Applicant: James R. Snider ,  Jason D. Millard

Inventor： James R. Snider ,  Jason D. Millard

IPC: H03G3/20

CPC classification number: H03G3/3047 ,  H03G2201/103 ,  H03G2201/206 ,  H03G2201/307 ,  H03G2201/40

Abstract: A power control loop for a power amplifier is disclosed. Embodiments of the power control loop include deriving a secondary control signal. The secondary control signal may be used to control a gain applied to the power signal in the power control loop and to control a supply current or voltage delivered to a power amplifier.

Abstract translation: 公开了一种用于功率放大器的功率控制回路。 功率控制回路的实施例包括导出辅助控制信号。 辅助控制信号可以用于控制施加到功率控制回路中的功率信号的增益，并且控制传递到功率放大器的电源电流或电压。

公开(公告)号：US6011959A

公开(公告)日：2000-01-04

申请号：US40046

申请日：1998-03-17

Applicant: Glen O. Reeser ,  Lunal Khuon ,  James R. Snider

Inventor： Glen O. Reeser ,  Lunal Khuon ,  James R. Snider

IPC: H04B1/40 ,  H04B1/52 ,  H04M1/00

CPC classification number: H04B1/005 ,  H04B1/52 ,  H04B1/406

Abstract: Dual band voltage controlled oscillators (VCOs) incorporate a combiner circuit with a single output operable at two widely separated frequency bands such as 900 MHz and 1.8 GHz, for example. The combiner circuit includes a duplexer used as a combiner on the outputs of the VCOs. The duplexer can be realized in transmission line or inductor configurations. The use of the duplexer improves spurious performance and phase noise by more than 10 dB between the two operating frequency bands and supplies band rejection at the non-operating frequency.

Abstract translation: 双频带电压控制振荡器（VCO）包括具有单个输出的组合器电路，其可以在例如900MHz和1.8GHz的两个广泛分离的频带上操作。 组合器电路包括在VCO的输出上用作组合器的双工器。 双工器可以在传输线或电感器配置中实现。 双工器的使用在两个工作频带之间提高杂散性能和相位噪声超过10 dB，并在非工作频率下提供频带抑制。

公开(公告)号：US07512392B2

公开(公告)日：2009-03-31

申请号：US10917552

申请日：2004-08-12

Applicant: Jason D. Millard ,  William J. Domino ,  James R. Snider

Inventor： Jason D. Millard ,  William J. Domino ,  James R. Snider

IPC: H04B7/00 ,  H04B1/16

CPC classification number: H04B1/1036

Abstract: An adaptive band-pass filter for a wireless receiver comprises a band-pass filter associated with the receiver, the band-pass filter configured to selectively filter the received signal, and a switch responsive to a control signal, the switch configured to control the band-pass filter based on a level of the received signal.

Abstract translation: 用于无线接收机的自适应带通滤波器包括与接收器相关联的带通滤波器，配置成选择性地滤波接收信号的带通滤波器和响应于控制信号的开关，该开关被配置为控制频带 基于接收信号电平的通滤波器。

公开(公告)号：US06487219B1

公开(公告)日：2002-11-26

申请号：US09392355

申请日：1999-09-08

Applicant: James R. Snider

Inventor： James R. Snider

IPC: H04J400

CPC classification number: H04W88/06 ,  H04J3/12 ,  H04W24/00 ,  H04W88/02

Abstract: 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.

Abstract translation: 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。