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1. 发明授权

US5230093A Transmitter filter with integral directional coupler for cellular telephones 失效
标题翻译：用于蜂窝电话的集成方向耦合器的发射器滤波器
公开(公告)号：US5230093A
公开(公告)日：1993-07-20
申请号：US695500
申请日：1991-05-03
申请人： Randall W. Rich , Dale G. Schwent , Rashid M. Osmani
发明人： Randall W. Rich , Dale G. Schwent , Rashid M. Osmani
IPC分类号： C07C29/09 , C07C29/86 , C07C31/20 , C07C31/22 , C07C31/27 , C07C45/50 , C07C45/81 , C07C45/85 , C07C47/02 , H01P1/205 , H01P5/18 , H03G3/20 , H04B1/04 , H04B1/38 , H04B1/40 , H04Q7/38
CPC分类号： H03G3/3042 , C07C31/20 , C07C45/85 , H01P1/2056 , H04B1/0458
摘要： A cellular telephone transmitter (100) includes a variable-gain power amplifier (102), the output of which is filtered and sampled by a filter (104) with an integral directional coupler. Filter (104) includes both a transmitter signal filter and a directional coupler on a ceramic block of one or more pieces. The directional coupler has been realized by two coupled transmission lines provided by the two holes (206 and 207) on the left side of the ceramic block, and the transmitter filter has been realized by five short-circuited coupled transmission lines provided by the five holes (201-205) on the right side of the ceramic block.
摘要翻译：蜂窝电话发射机（100）包括可变增益功率放大器（102），其输出由具有积分定向耦合器的滤波器（104）滤波和采样。滤波器（104）包括一个或多个陶瓷块上的发射机信号滤波器和定向耦合器。定向耦合器已经通过由陶瓷块左侧的两个孔（206和207）提供的两个耦合的传输线实现，并且发射器滤波器已经由五个由五个孔提供的五个短路耦合传输线实现（201-205）在陶瓷块的右侧。

2. 发明授权

US5758271A Apparatus and method for optimizing the quality of a received signal in a radio receiver 失效
标题翻译：用于优化无线电接收机中的接收信号质量的装置和方法
公开(公告)号：US5758271A
公开(公告)日：1998-05-26
申请号：US978099
申请日：1997-11-25
申请人： Randall W. Rich , Richard J. Vilmur
发明人： Randall W. Rich , Richard J. Vilmur
IPC分类号： H04B1/10 , H04B7/005 , H04B1/06 , H04B7/00
CPC分类号： H04W52/18
摘要： A code division multiple access (CDMA) radio receiver (104) having gain receives a radio frequency (RF) signal (122) to produce a received signal (124). The quality (130) of the received signal (124) is determined (111). The quality (130) is preferably a ratio of an energy per chip of a desired signal (Ec) to a total power spectral density of the received signal (Io) (124). For alternative radio receivers (104) the quality (130) may be an error rate estimate of a demodulated signal (126). The gain of the radio receiver (104) is adjusted responsive to the quality (130) of the received signal (124) to optimize the quality (130) of the received signal (124). Further, since the adjusted gain also changes a received signal strength indication (RSSI) (242) of the received signal (124), the RSSI (242) of the received signal (124) is estimated (217) and compensated (218) responsive to the gain of the radio receiver (104) to produce a compensated RSSI (134) of the received signal (124) indicative of the RSSI of a desired RF signal (122).
摘要翻译：具有增益的码分多址（CDMA）无线电接收机（104）接收射频（RF）信号（122）以产生接收信号（124）。确定接收信号（124）的质量（130）（111）。质量（130）优选地是期望信号（Ec）的每芯片的能量与接收信号（Io）的总功率谱密度（124）的比率。对于替代无线电接收机（104），质量（130）可以是解调信号（126）的误码率估计。响应于接收信号（124）的质量（130）来调整无线电接收机（104）的增益，以优化接收信号（124）的质量（130）。此外，由于调整的增益还改变接收信号（124）的接收信号强度指示（RSSI）（242），所以接收信号（124）的RSSI（242）被估计（217）并且被补偿（218）响应（104）的增益以产生指示所需RF信号（122）的RSSI的接收信号（124）的补偿RSSI（134）。

3. 发明授权

US5163159A Dual mode automatic frequency control 失效
标题翻译：双模自动频率控制
公开(公告)号：US5163159A
公开(公告)日：1992-11-10
申请号：US559775
申请日：1990-07-30
申请人： Randall W. Rich , Rashid M. Osman , Thomas J. Walczak , Stephen V. Cahill
发明人： Randall W. Rich , Rashid M. Osman , Thomas J. Walczak , Stephen V. Cahill
IPC分类号： H03J7/06 , H04B1/40 , H04L27/227 , H04Q7/22 , H04Q7/24 , H04Q7/26 , H04Q7/30 , H04Q7/36 , H04Q7/38
CPC分类号： H04B1/0032 , H03J7/065 , H04B1/0003 , H04B1/406 , H04L27/2272
摘要： A frequency control system for a dual-mode radiotelephone (152-238; 252-320) operative to receive either an FM signal or a DQPSK signal. In a first embodiment, when operative to receive the FM signal, the frequency of the reference oscillator (192) of the radiotelephone (152-222) is maintained in a fixed relation with the frequency of the FM signal. When operative to receive the DQPSK signal, the reference oscillator (192) is maintained in a fixed relation with the frequency of the DQPSK signal as determined by a digital signal processor (212). In a second embodiment, when operative to receive the FM signal, the frequency of an offset control oscillator (320) is maintained in a fixed relation with the frequency of the FM signal. When operative to receive the DQPSK signal, the reference oscillator (292) is maintained in a fixed relation with the frequency of the DQPSK signal as determined by a digital signal processor (312).
摘要翻译：一种用于双模式无线电话（152-238; 252-320）的频率控制系统，其操作以接收FM信号或DQPSK信号。在第一实施例中，当操作以接收FM信号时，无线电话（152-222）的参考振荡器（192）的频率与FM信号的频率保持固定关系。当操作以接收DQPSK信号时，参考振荡器（192）与由数字信号处理器（212）确定的DQPSK信号的频率保持固定的关系。在第二实施例中，当操作以接收FM信号时，偏移控制振荡器（320）的频率与FM信号的频率保持固定关系。当操作以接收DQPSK信号时，参考振荡器（292）与由数字信号处理器（312）确定的DQPSK信号的频率保持固定的关系。

4. 发明授权

US5187809A Dual mode automatic gain control 失效
标题翻译：双模式自动增益控制
公开(公告)号：US5187809A
公开(公告)日：1993-02-16
申请号：US896462
申请日：1992-06-08
申请人： Randall W. Rich , Rashid M. Osmani , Thomas J. Walczak , Stephen V. Cahill
发明人： Randall W. Rich , Rashid M. Osmani , Thomas J. Walczak , Stephen V. Cahill
IPC分类号： H03G3/20
CPC分类号： H03G3/3036 , H03G3/3052 , H03G3/3068
摘要： A gain control system for controlling signal levels of the signal received by a receiver. The gain control system is operable to control the signal levels of the signal when the signal is comprised of either a conventional, constant envelope signal, such as an FM signal, or a non-constant envelope signal, such as a TDMA composite modulated signal. The gain control system may be advantageously embodied in a dual-mode radiotelephone operable to receive both conventional, FM signals and TDMA, composite modulated signals.
摘要翻译：一种用于控制由接收机接收的信号的信号电平的增益控制系统。增益控制系统可操作以在信号由传统的恒定包络信号（例如FM信号）或诸如TDMA复合调制信号的非恒定包络信号组成时控制信号的信号电平。增益控制系统可以有利地体现在双模式无线电话中，可操作以接收传统的FM信号和TDMA，复合调制信号。

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