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1. 发明授权

EP1366562B1 AMPLITUDE AND PHASE MODULATOR 有权
标题翻译：振幅和相位调制器
公开(公告)号：EP1366562B1
公开(公告)日：2011-04-20
申请号：EP01270242.9
申请日：2001-11-21
申请人： Ericsson Inc.
发明人： PEHLKE, David, R. , HADJICHRISTOS, Aristotle , CAMP, William, O., Jr.
IPC分类号： H03C5/00
CPC分类号： H03F3/602 , H03F1/0266 , H03F2200/504
摘要： A radio frequency power amplifier circuit provides linear amplitude modulation of a radio frequency output signal while operating in a saturated amplification mode. The power amplifier circuit incorporates a lossy modulator that functions as a variable resistance responsive to an amplitude modulation signal. A supply voltage is coupled to the voltage supply input of the power amplifier circuit through the lossy modulator, such that the supply voltage applied to the power amplifier varies with the amplitude modulation signal. The radio frequency power amplifier circuit modulates the envelope of an RF output signal generated by saturated mode amplification of a constant envelope radio frequency input signal.

2. 发明公开

EP1057041A1 STAND ALONE GLOBAL POSITIONING SYSTEM (GPS) AND METHOD WITH HIGH SENSITIVITY 有权
标题翻译：独立GPS设备和高敏方法
公开(公告)号：EP1057041A1
公开(公告)日：2000-12-06
申请号：EP99904531.3
申请日：1999-02-01
申请人： Ericsson Inc.
发明人： CAMP, William, O., Jr. , MAKOVICKA, Thomas, J.
IPC分类号： G01S5/14
CPC分类号： G01S19/258 , G01S19/05 , G01S19/256 , G01S2205/008
摘要： A method is provided for determining the position of a user terminal utilizing global positioning system (GPS) satellites, each of the GPS satellites transmitting a signal containing information indicative of the orbital parameters of the respective GPS satellite, timing and synchronization data and clock correction parameters. The method includes the steps of approximating an expected range of Doppler frequencies within which at least one GPS satellite should be located, within this range, searching for and acquiring a first GPS signal from a first GPS satellite at the user terminal strong enough to demodulate, the first GPS signal containing information indicative of the orbital parameters of the first GPS satellite, timing and synchronization data and clock correction parameters, demodulating the first GPS signal to obtain time of week information, measuring code phase synchronization for the first GPS signal utilizing the time of week information, searching for and acquiring second, third and fourth GPS signals at the user terminal from second, third and fourth GPS satellites, respectively, measuring code phase synchronizations for the second, third and fourth GPS signals utilizing the time of week information, and calculating the position of the user terminal utilizing the code phase synchronizations of the first through fourth GPS signals.

3. 发明授权

EP1020038B1 SYSTEMS AND METHODS FOR SHARING REFERENCE FREQUENCY SIGNALS WITHIN A WIRELESS MOBILE TERMINAL BETWEEN A WIRELESS TRANSCEIVER AND A GLOBAL POSITIONING SYSTEM RECEIVER 有权
标题翻译：安排和方法中供参考频率信号之间的无线发射接收器和GPS接收器在移动终端中的使用
公开(公告)号：EP1020038B1
公开(公告)日：2009-11-25
申请号：EP98944702.4
申请日：1998-09-03
申请人： Ericsson Inc.
发明人： HORTON, Robert, Ray , CAMP, William, O., Jr.
IPC分类号： H04B1/40 , G01S1/04
CPC分类号： H04B1/3805 , G01S19/235
摘要： A wireless mobile terminal for a wireless communication system comprises a wireless transceiver, a global positioning system (GPS) receiver, wherein the wireless transceiver and the GPS receiver share a frequency reference signal. The frequency reference signal can be multiplied by an integer multiple to create a first local oscillator for a signal conversion to an intermediate frequency for signal processing of the GPS signal. In addition, the frequency reference signal can also be divided into a lower frequency to create a second local oscillator for a conversion to a second intermediate frequency. The frequency reference signal can also be divided to create a frequency necessary for other signal processing, such as an analog-to-digital converter sampling signal at the GPS receiver. The frequency reference signal can be taken from different places within the frequency synthesis mechanism of the wireless transceiver. For example, in one embodiment the frequency reference signal is a reference oscillator signal, in another embodiment the frequency reference signal is a radio frequency signal, and in yet another embodiment the frequency reference signal is a radio frequency control signal. Frequency error can be removed from the frequency reference signal by locking to a base station carrier.

4. 发明授权

EP1364456B1 AMPLIFICATION SYSTEMS AND METHODS USING FIXED AND MODULATED POWER SUPPLY VOLTAGES AND BUCK-BOOST CONTROL 有权
标题翻译：放大器系统和与固体和调制的电源电路和具有隆起的电平转换稳压器方法
公开(公告)号：EP1364456B1
公开(公告)日：2009-11-04
申请号：EP01957360.9
申请日：2001-07-31
申请人： Ericsson Inc.
发明人： DENT, Paul, W. , CAMP, William, O., Jr.
IPC分类号： H03F1/02
CPC分类号： H03F3/211 , H02M3/1582 , H03F1/0227 , H03F1/0288 , H03F1/0294 , H03F3/602 , H03F2200/198 , H03F2200/324 , H03F2200/331 , H03F2200/336 , H03F2200/432 , H03F2200/504 , H03F2200/516 , H03F2200/537 , H03F2200/541 , H03F2200/543 , H03F2203/21142 , H03G3/004 , H03G3/3042

5. 发明公开

EP1364456A2 AMPLIFICATION SYSTEMS AND METHODS USING FIXED AND MODULATED POWER SUPPLY VOLTAGES AND BUCK-BOOST CONTROL 有权
标题翻译：放大器系统和与固体和调制的电源电路和具有隆起的电平转换稳压器方法
公开(公告)号：EP1364456A2
公开(公告)日：2003-11-26
申请号：EP01957360.9
申请日：2001-07-31
申请人： Ericsson Inc.
发明人： DENT, Paul, W. , CAMP, William, O., Jr.
IPC分类号： H03F1/02
CPC分类号： H03F3/211 , H02M3/1582 , H03F1/0227 , H03F1/0288 , H03F1/0294 , H03F3/602 , H03F2200/198 , H03F2200/324 , H03F2200/331 , H03F2200/336 , H03F2200/432 , H03F2200/504 , H03F2200/516 , H03F2200/537 , H03F2200/541 , H03F2200/543 , H03F2203/21142 , H03G3/004 , H03G3/3042
摘要： A signal of varying amplitude in a first saturated power amplifier that operates from a fixed voltage power supply to produce a first output signal of constant amplitude. The signal of varying amplitude also is amplified in a second saturated power amplifier that operates from a modulated voltage power supply, to produce a second output signal of amplitude that depends on the signal of varying amplitude, a modulated power supply voltage, and on an invert/noninvert control signal. The first and second output signals are combined into a load. The modulated voltage power supply is modulated while generating the invert/noninvert control signal, such that the combined first and second output signals into the load amplify the signal of varying amplitude. The signal of varying amplitude also may be of varying amplitude and varying phase.

6. 发明授权

EP0965050B1 WIRELESS COMMUNICATION DEVICE AND SYSTEM INCORPORATING LOCATION-DETERMINING MEANS 失效
标题翻译：无线通信设备和定位系统
公开(公告)号：EP0965050B1
公开(公告)日：2001-09-12
申请号：EP98904900.2
申请日：1998-02-20
申请人： Ericsson Inc.
发明人： CAMP, William, O., Jr.
IPC分类号： G01S5/14
CPC分类号： G01S19/41 , G01S19/09 , G01S2205/008
摘要： A device, method and system which enables the location of a wireless communication device to be accurately determined without requiring the device to perform extensive signal processing or calculations. The wireless device frequency converts a location-determining signal from an initial frequency to the frequency of a standard communication channel, and transmits the frequency-converted signal to a base station in a conventional manner. A location-determining receiver associated with the base station receives the location-determining signal and determines the location of the wireless communication device based on the location-determining signal.

7. 发明公开

EP1049942A1 METHOD FOR DETERMINING THE LOCATION OF A GPS RECEIVER USING AN ESTIMATED REFERENCE TIME 有权
标题翻译： PROCEDURE用于确定GPS接收机的位置，估计时间基准指数
公开(公告)号：EP1049942A1
公开(公告)日：2000-11-08
申请号：EP98963906.7
申请日：1998-12-14
申请人： ERICSSON INC.
发明人： CAMP, William, O., Jr.
IPC分类号： G01S5/14
CPC分类号： G01S19/40 , G01S5/0063 , G01S19/05 , G01S2205/008
摘要： A method for determining the location of a satellite receiver. The method begins by selecting a trial time for use in calculating a presumed location of the receiver using at least four satellites. The presumed location is calculated based on the selected trial time. A first range from the presumed location to a fifth satellite is calculated and a second range from the presumed location to the fifth satellite is measured. A comparison is then made between the first range to the second range. If the first range is unequal to the second range the presumed location is not the actual location. A new trial time is selected and the method is repeated. When the first range and the second range are substantially the same then the presumed location is the actual location.

8. 发明公开

EP1038361A1 COMBINED GPS AND WIDE BANDWIDTH RADIOTELEPHONE TERMINALS AND METHODS 审中-公开
标题翻译： Verharen和联合GPS和宽带无线器件
公开(公告)号：EP1038361A1
公开(公告)日：2000-09-27
申请号：EP98958075.8
申请日：1998-11-18
申请人： ERICSSON INC.
发明人： CAMP, William, O., Jr. , HORTON, Robert, Bay , DENT, Paul, Wilkinson
IPC分类号： H04B1/38 , G01S5/14 , H04B1/26
CPC分类号： G01S19/35 , G01S2205/008 , H04B1/3805
摘要： Wireless mobile terminals include a GPS Radio Frequency (RF) receiver and a wide bandwidth radiotelephone RF receiver having bandwidth that is at least half as wide as the GPS RF signal chip frequency. The wireless mobile terminals also include a shared Intermediate Frequency (IF) section that is responsive to both the GPS RF receiver and to the wide bandwidth radiotelephone RF receiver. A demodulator such as a CDMA despreader is responsive to the shared IF section. Thus, common circuitry may be provided except for the separate GPS RF receiver and wide bandwidth radiotelephone RF receiver. Low cost manufacturing and high efficiency operations may thereby be provided.

9. 发明公开

EP1020038A1 SYSTEMS AND METHODS FOR SHARING REFERENCE FREQUENCY SIGNALS WITHIN A WIRELESS MOBILE TERMINAL BETWEEN A WIRELESS TRANSCEIVER AND A GLOBAL POSITIONING SYSTEM RECEIVER 有权
标题翻译：安排和方法中供参考频率信号之间的无线发射接收器和GPS接收器在移动终端中的使用
公开(公告)号：EP1020038A1
公开(公告)日：2000-07-19
申请号：EP98944702.4
申请日：1998-09-03
申请人： ERICSSON INC.
发明人： HORTON, Robert, Ray , CAMP, William, O., Jr.
IPC分类号： H04B1/40 , G01S1/04
CPC分类号： H04B1/3805 , G01S19/235
摘要： A wireless mobile terminal for a wireless communication system comprises a wireless transceiver, a global positioning system (GPS) receiver, wherein the wireless transceiver and the GPS receiver share a frequency reference signal. The frequency reference signal can be multiplied by an integer multiple to create a first local oscillator for a signal conversion to an intermediate frequency for signal processing of the GPS signal. In addition, the frequency reference signal can also be divided into a lower frequency to create a second local oscillator for a conversion to a second intermediate frequency. The frequency reference signal can also be divided to create a frequency necessary for other signal processing, such as an analog-to-digital converter sampling signal at the GPS receiver. The frequency reference signal can be taken from different places within the frequency synthesis mechanism of the wireless transceiver. For example, in one embodiment the frequency reference signal is a reference oscillator signal, in another embodiment the frequency reference signal is a radio frequency signal, and in yet another embodiment the frequency reference signal is a radio frequency control signal. Frequency error can be removed from the frequency reference signal by locking to a base station carrier.

10. 发明授权

EP1374516B1 SYSTEM AND METHOD TO REDUCE PHASE MODULATION BANDWIDTH 有权
标题翻译：系统和方法减少相位调制带宽
公开(公告)号：EP1374516B1
公开(公告)日：2010-10-13
申请号：EP02748357.7
申请日：2002-02-20
申请人： Ericsson Inc.
发明人： CAMP, William, O., Jr. , ISBERT, Martin
IPC分类号： H04L27/20
CPC分类号： H04L27/367

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