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1. 发明公开

EP1513268A2 Method and apparatus for increasing receiver immunity to interference 失效
标题翻译： Verfahren zumErhöhenderStörungsimmunitäteinesEmpfängers
公开(公告)号：EP1513268A2
公开(公告)日：2005-03-09
申请号：EP04019498.7
申请日：1995-12-11
申请人： QUALCOMM INCORPORATED
发明人： Wheatley, Charles E. III c/o Qualcomm Incorporated , Peterzell, Paul E. , Kornfeld, Richard K. , Weiland, Ana L.
IPC分类号： H04B7/005
CPC分类号： H04W52/52 , H03F3/72 , H03F2203/7239 , H03G1/0088 , H03G3/3052 , H03G3/3068 , H04B1/109 , H04B1/70755 , H04B1/7097
摘要： The method and apparatus of the present invention improve the immunity to interference of a radio receiver. The power level of a received signal is detected. If the power level meets or exceeds a predetermined power threshold, the low noise amplifier is by-passed, thus increasing the intercept point of the receiver components. Alternative embodiments include the use of an RF power detector to control the front-end gain as a function of jammer power. In lieu of a switchable RF gain block, several methods of continuous gain control are proposed. Continuous gain control allows the interference suppression and sensitivity of the receiver to be adjusted at lower signal levels than the switchable gain block.
摘要翻译：一种用于增加无线电接收机对射频干扰的抗扰度的装置，所述无线电接收机接收信号，所述装置包括：耦合到接收信号的开关（1105），所述开关（1105）具有打开位置和闭合位置; 电阻（1101），电阻（1101）的第一端耦合到开关（1105）的闭合位置，电阻（1101）的第二端耦合到地电位; 具有耦合到开关（1105）的打开位置的输入的放大器（1101），用于在输出端产生放大的接收信号; 耦合到开关（1105）的控制器，用于响应于超过预定功率电平的接收信号将开关（1105）切换到闭合位置，所述接收信号通过所述开关（1105）和所述电阻（1101）传导至当所述开关（1105）处于所述关闭位置时的接地电位; 并且当所述开关（1105）处于闭合位置时，所述电阻（1101）在所述放大器（1110）的输入处产生阻抗失配，由此降低由所述放大器（1110）贡献的增益。

2. 发明公开

EP1503517A3 Method and apparatus for increasing receiver immunity to interference 失效
标题翻译：用于提高接收机的抗干扰信号的方法和装置
公开(公告)号：EP1503517A3
公开(公告)日：2005-02-09
申请号：EP04019499.5
申请日：1995-12-11
申请人： QUALCOMM INCORPORATED
发明人： Wheatley, Charles E., III , Peterzell, Paul E. , Kornfeld, Richard K. , Weiland, Ana L.
IPC分类号： H04B7/005 , H04B1/707 , H04B1/10 , H03G3/20 , H03G3/30
CPC分类号： H04W52/52 , H03F3/72 , H03F2203/7239 , H03G1/0088 , H03G3/3052 , H03G3/3068 , H04B1/109 , H04B1/70755 , H04B1/7097
摘要： The process of the present invention adjusts the input gain by a predetermined amount. The receiver processing measures the gain change in the IF signal power. If the change is less than the predetermined amount, the CDMA signal and jammers are below the noise floor and, therefore, the gain is increased. If the IF signal power change is equal to the predetermined amount, the CDMA signal is above the noise floor and the interference is minimal. Therefore, in this case, gain adjustment is not necessary, but increasing gain will improve sensitivity. If the IF signal power change is greater than the predetermined amount, the interference is evident and the gain is reduced to reduce the intermodulation products. This process is used until the receiver is operating at the best compromise between interference and noise figure.
摘要翻译：增加一个无线电接收机的免疫力对无线电频率干扰的装置，所述无线电接收器处接收的信号，所述装置包括：耦合到所述接收到的信号，具有打开位置和闭合位置的开关（1105）的开关（1105）; 一个电阻（1101）时，电阻的第一端部（1101）被耦合到所述开关（1105）和所述电阻（1101）的第二端部的闭合位置被耦合到地电势; 在放大器（1101），其具有耦合到所述开关（1105），用于在输出处放大的接收信号生成的打开位置的输入; 耦合到所述开关（1105）的控制器，用于切换开关（1105）到所述闭合位置，响应于所接收到的信号超过预定的功率电平，所述接收到的信号传导通过所述开关（1105）和所述电阻（1101）到当接地电位，所述开关（1105）是在所述关闭位置; 和所述电阻（1101）在输入端产生阻抗失配的给放大器。所述（1110），当所述开关（1105）处于关闭位置，从而减少了发表的所述放大器（1110）的增益。

3. 发明公开

EP1513268A3 Method and apparatus for increasing receiver immunity to interference 失效
标题翻译：提高接收机免受干扰的方法和设备
公开(公告)号：EP1513268A3
公开(公告)日：2005-03-23
申请号：EP04019498.7
申请日：1995-12-11
申请人： QUALCOMM INCORPORATED
发明人： Wheatley, Charles E. III c/o Qualcomm Incorporated , Peterzell, Paul E. , Kornfeld, Richard K. , Weiland, Ana L.
IPC分类号： H04B7/005
CPC分类号： H04W52/52 , H03F3/72 , H03F2203/7239 , H03G1/0088 , H03G3/3052 , H03G3/3068 , H04B1/109 , H04B1/70755 , H04B1/7097
摘要： An apparatus to increase a radio receiver's immunity to radio frequency interference, the radio receiver receiving a signal, the apparatus comprising: a switch (1105) coupled to the received signal, the switch (1105) having an open position and a closed position; a resistance (1101), a first end of the resistance (1101) being coupled to the closed position of the switch (1105) and a second end of the resistance (1101) being coupled to a ground potential; an amplifier (1101) having an input coupled to the open position of the switch (1105), for generating an amplified received signal at an output; a controller coupled to the switch (1105), for switching the switch (1105) to the closed position in response to the received signal exceeding a predetermined power level, said received signal conducting through said switch (1105) and said resistance (1101) to ground potential when said switch (1105) is in said closed position; and said resistance (1101) creating an impedance mismatch at the input to said amplifier (1110) when said switch (1105) is in closed position, thereby reducing the gain contributed by said amplifier (1110).
摘要翻译：一种提高无线电接收机对射频干扰的抗扰度的装置，该无线电接收机接收信号，该装置包括：耦合到接收信号的开关（1105），开关（1105）具有开放位置和闭合位置; （1101），所述电阻（1101）的第一端耦合到所述开关（1105）的闭合位置，并且所述电阻（1101）的第二端耦合到地电位; 具有耦合到开关（1105）的断开位置的输入的放大器（1101），用于在输出处产生放大的接收信号; 耦合到开关（1105）的控制器，用于响应于接收信号超过预定功率电平而将开关（1105）切换到闭合位置，所述接收信号通过所述开关（1105）和所述电阻（1101）传导到当所述开关（1105）处于所述闭合位置时的接地电位; 并且当所述开关（1105）处于闭合位置时，所述电阻（1101）在所述放大器（1110）的输入处产生阻抗不匹配，从而降低由所述放大器（1110）贡献的增益。

4. 发明授权

EP1513268B1 Method and apparatus for increasing receiver immunity to interference 失效
标题翻译：一种用于提高接收机的抗干扰性的方法
公开(公告)号：EP1513268B1
公开(公告)日：2008-07-30
申请号：EP04019498.7
申请日：1995-12-11
申请人： QUALCOMM INCORPORATED
发明人： Wheatley, Charles E. III c/o Qualcomm Incorporated , Peterzell, Paul E. , Kornfeld, Richard K. , Weiland, Ana L.
IPC分类号： H04B7/005
CPC分类号： H04W52/52 , H03F3/72 , H03F2203/7239 , H03G1/0088 , H03G3/3052 , H03G3/3068 , H04B1/109 , H04B1/70755 , H04B1/7097
摘要： An apparatus to increase a radio receiver's immunity to radio frequency interference, the radio receiver receiving a signal, the apparatus comprising: a switch (1105) coupled to the received signal, the switch (1105) having an open position and a closed position; a resistance (1101), a first end of the resistance (1101) being coupled to the closed position of the switch (1105) and a second end of the resistance (1101) being coupled to a ground potential; an amplifier (1101) having an input coupled to the open position of the switch (1105), for generating an amplified received signal at an output; a controller coupled to the switch (1105), for switching the switch (1105) to the closed position in response to the received signal exceeding a predetermined power level, said received signal conducting through said switch (1105) and said resistance (1101) to ground potential when said switch (1105) is in said closed position; and said resistance (1101) creating an impedance mismatch at the input to said amplifier (1110) when said switch (1105) is in closed position, thereby reducing the gain contributed by said amplifier (1110).

5. 发明公开

EP1503517A2 Method and apparatus for increasing receiver immunity to interference 失效
标题翻译：提高接收机免受干扰的方法和设备
公开(公告)号：EP1503517A2
公开(公告)日：2005-02-02
申请号：EP04019499.5
申请日：1995-12-11
申请人： QUALCOMM INCORPORATED
发明人： Wheatley, Charles E., III , Peterzell, Paul E. , Kornfeld, Richard K. , Weiland, Ana L.
IPC分类号： H04B7/005
CPC分类号： H04W52/52 , H03F3/72 , H03F2203/7239 , H03G1/0088 , H03G3/3052 , H03G3/3068 , H04B1/109 , H04B1/70755 , H04B1/7097
摘要： The process of the present invention adjusts the input gain by a predetermined amount. The receiver processing measures the gain change in the IF signal power. If the change is less than the predetermined amount, the CDMA signal and jammers are below the noise floor and, therefore, the gain is increased. If the IF signal power change is equal to the predetermined amount, the CDMA signal is above the noise floor and the interference is minimal. Therefore, in this case, gain adjustment is not necessary, but increasing gain will improve sensitivity. If the IF signal power change is greater than the predetermined amount, the interference is evident and the gain is reduced to reduce the intermodulation products. This process is used until the receiver is operating at the best compromise between interference and noise figure.
摘要翻译：本发明的过程将输入增益调整预定量。接收器处理测量IF信号功率的增益变化。如果变化小于预定量，则CDMA信号和干扰信号低于本底噪声，因此增益增加。如果IF信号功率变化等于预定量，则CDMA信号高于本底噪声并且干扰最小。因此，在这种情况下，增益调整不是必需的，但增加增益会提高灵敏度。如果IF信号功率变化大于预定量，则干扰是明显的，并且增益减小以减少互调产物。这个过程被使用，直到接收器在干扰和噪声系数之间达到最佳折衷为止。

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