公开(公告)号：AU1879795A

公开(公告)日：1995-09-11

申请号：AU1879795

申请日：1995-02-17

Applicant: QUALCOMM INC

Inventor： WEILAND ANA L ,  KORNFELD RICHARD K ,  KERR RICHARD J ,  MALONEY JOHN E ,  WILSON NATHANIEL B

IPC: H04B1/40 ,  H04B1/04 ,  H04B7/005 ,  H04B7/26 ,  H04W52/06 ,  H04W52/52

Abstract: The process and apparatus of the present invention limits the output power of a radiotelephone, operating in a cellular system in the preferred embodiment. This ensures the transmitted sidebands and synthesizer phase noise remains within a certain specification. This is accomplished by power detection and a correction accumulator that together generate a gain control signal by limiting the gain adjustment to a maximum value, even when the cell site communicating with the radiotelephone is sending power turn-up commands to the radiotelephone. This process includes dynamically correcting the output level of the transmitter due to gain variations in the transmitter stages or gain control elements.

公开(公告)号：CA2136749A1

公开(公告)日：1994-10-13

申请号：CA2136749

申请日：1994-03-25

Applicant: QUALCOMM INC ,  ALPS ELECTRIC CO LTD

Inventor： KORNFELD RICHARD K ,  WEILAND ANA L ,  OKAZAKI MITSUNARI

IPC: H03F1/02 ,  H03F1/30 ,  H03F3/20

Abstract: A control circuit for a multi-stage power amplifier (such as in a portable radio transmitter) compensates for fluctuations in ambient temperature, load, signal level and power supply voltage, The control voltage is set by comparing a biasing level which is related to the amplifier input signal level to a voltage proportional to the power supply current of the last stage of the amplifier. The control voltage resulting from the comparison establishes the operating point of the last stage of the power amplifier.

公开(公告)号：WO9619048A3

公开(公告)日：1996-09-06

申请号：PCT/US9516002

申请日：1995-12-11

Applicant: QUALCOMM INC

Inventor： WHEATLEY CHARLES E III ,  PETERZELL PAUL E ,  KORNFELD RICHARD K ,  WEILAND ANA L

IPC: H04B1/06 ,  H03G1/00 ,  H03G3/30 ,  H04B20060101 ,  H04B1/10 ,  H04B1/16 ,  H04B1/18 ,  H04B1/40 ,  H04B1/7075 ,  H04B1/7097 ,  H04B3/06 ,  H04B7/005 ,  H04B7/26 ,  H04B15/00

CPC classification number: H04W52/52 ,  H03F3/72 ,  H03F2203/7239 ,  H03G1/0088 ,  H03G3/3052 ,  H03G3/3068 ,  H04B1/109 ,  H04B1/70755 ,  H04B1/7097

Abstract: 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 (703) is by-passed (730), thus increasing the intercept point of the receiver components. Alternative embodiments include the use of an RF power detector (105) to control the front-end gain (110) as a function of jammer power. In lieu of a switchable RF gain block (730), 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. A method of the present invention adjusts the input gain by a predetermined amount (1601). The receiver processing measures the gain change in the IF signal power (1605). If the change is less than the predetermined amount (1610), the CDMA signal and jammers are below the noise floor and, therefore, the gain is increased (1615). 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 (1620). This process is used until the receiver is operating at the best compromise between interference and noise figure. 00000

Abstract translation: 本发明的方法和装置提高了无线电接收机的抗干扰能力。 检测到接收信号的功率电平。 如果功率电平满足或超过预定功率阈值，则低噪声放大器（703）被旁路（730），从而增加了接收器组件的截取点。 替代实施例包括使用RF功率检测器（105）来根据干扰功率来控制前端增益（110）。 代替可切换RF增益块（730），提出了几种连续增益控制方法。 连续增益控制允许在比可切换增益块更低的信号电平下调整接收机的干扰抑制和灵敏度。 本发明的方法将输入增益调整预定量（1601）。 接收机处理测量IF信号功率的增益变化（1605）。 如果改变小于预定量（1610），CDMA信号和干扰器低于本底噪声，因此增益增加（1615）。 如果IF信号功率变化大于预定量，则干扰是显而易见的并且减小增益以减少互调产物（1620）。 使用这个过程直到接收机以干扰和噪声系数之间的最佳折中操作。 00000

公开(公告)号：ES2308076T3

公开(公告)日：2008-12-01

申请号：ES04019498

申请日：1995-12-11

Applicant: QUALCOMM INC

Inventor： WHEATLEY CHARLES E III ,  PETERZELL PAUL E ,  KORNFELD RICHARD K ,  WEILAND ANA L

IPC: H04B1/06 ,  H04B7/005 ,  H03G1/00 ,  H03G3/30 ,  H04B20060101 ,  H04B1/10 ,  H04B1/16 ,  H04B1/18 ,  H04B1/40 ,  H04B1/7075 ,  H04B1/7097 ,  H04B3/06 ,  H04B7/26 ,  H04B15/00

Abstract: Un aparato para aumentar una inmunidad de un receptor de radio a la interferencia a la radiofrecuencia, el receptor de radio estando recibiendo una señal, y comprendiendo el aparato: un conmutador (1105) acoplado a la señal recibida, el conmutador (1105) teniendo una posición de abierto y una posición de cerrado; una resistencia (1101), un primer extremo de la resistencia (1101) estando acoplado a la posición de cerrado del conmutador (1105) y un segundo extremo de la resistencia (1101) estando acoplado a un potencial de tierra; un amplificador (1110) que tiene una entrada acoplada a la posición de abierto del conmutador (1105), para generar una señal recibida amplificada en una salida; un controlador acoplado al conmutador (1105) para conmutar el conmutador (1105) a la posición de cerrado en respuesta a la señal recibida que sobrepasa un nivel de potencia predeterminado, la mencionada señal recibida pasando a través del mencionado conmutador (1105) y la mencionada resistencia (1101) al potencial de tierra cuando el mencionado conmutador (1105) está en la mencionada posición de cerrado; y la mencionada resistencia (1101) creando un desacoplo de impedancias en la entrada del mencionado amplificador (1110) cuando el mencionado conmutador (1105) está en la posición de cerrado, reduciendo así la ganancia contribuida por el mencionado amplificador (1110).

公开(公告)号：CA2467276C

公开(公告)日：2005-06-21

申请号：CA2467276

申请日：1995-12-11

Applicant: QUALCOMM INC

Inventor： WEILAND ANA L ,  KORNFELD RICHARD K ,  PETERZELL PAUL E ,  WHEATLEY CHARLES E III

IPC: H04B1/06 ,  H03G1/00 ,  H03G3/30 ,  H04B20060101 ,  H04B1/10 ,  H04B1/16 ,  H04B1/18 ,  H04B1/40 ,  H04B1/7075 ,  H04B1/7097 ,  H04B3/06 ,  H04B7/005 ,  H04B7/26 ,  H04B15/00

Abstract: 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.

公开(公告)号：MY117285A

公开(公告)日：2004-06-30

申请号：MYPI9503874

申请日：1995-12-14

Applicant: QUALCOMM INC

Inventor： PETERZELL PAUL E ,  WHEATLEY CHARLES E III ,  KORNFELD RICHARD K ,  WEILAND ANA L

IPC: H04B1/06 ,  H04B1/10 ,  H03G1/00 ,  H03G3/30 ,  H04B20060101 ,  H04B1/16 ,  H04B1/18 ,  H04B1/40 ,  H04B1/7075 ,  H04B1/7097 ,  H04B3/06 ,  H04B7/005 ,  H04B7/26 ,  H04B15/00

Abstract: 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 (703) IS BY-PASSED (730), THUS INCREASING THE INTERCEPT POINT OF THE RECEIVER COMPONENTS. ALTERNATIVE EMBODIMENTS INCLUDE THE USE OF AN RF POWER DETECTOR (105) TO CONTROL THE FRON-END GAIN (110) AS A FUNCTION OF JAMMER POWER. IN LIEU OF A SWITCHABLE RF GAIN BLOCK (730), 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. A METHOD OF THE PRESENT INVENTION ADJUSTS THE INPUT GAIN BY A PREDETERMINED AMOUNT (1601). THE RECEIVER PROCESSING MEASURES THE GAIN CHANGE IN THE IF SIGNAL POWER (1605). IF THE CHANGE IS LESS THAN THE PREDETERMINED AMOUNT (1610), THE CDMA SIGNAL AND JAMMERS ARE BELOW THE NOISE FLOOR AND, THEREFORE, THE GAIN IS INCREASED (1615). 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 (1620). THIS PROCESS IS USED UNTIL THE RECEIVER IS OPERATING AT THE BEST COMPROMISE BETWEEN INTERFERENCE AND NOISE

公开(公告)号：AU1424799A

公开(公告)日：1999-04-01

申请号：AU1424799

申请日：1999-01-29

Applicant: QUALCOMM INC

Inventor： WHEATLEY CHARLES E III ,  WEILAND ANA L ,  KORNFELD RICHARD K ,  PETERZELL PAUL E

IPC: H04B1/06 ,  H03G1/00 ,  H03G3/30 ,  H04B20060101 ,  H04B1/10 ,  H04B1/16 ,  H04B1/18 ,  H04B1/40 ,  H04B1/7075 ,  H04B1/7097 ,  H04B3/06 ,  H04B7/005 ,  H04B7/26 ,  H04B15/00

Abstract: 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).

公开(公告)号：MX9704445A

公开(公告)日：1997-09-30

申请号：MX9704445

申请日：1995-12-11

Applicant: QUALCOMM INC

Inventor： WHEATLEY CHARLES E III ,  PETERZELL PAUL E ,  KORNFELD RICHARD K ,  WEILAND ANA L

IPC: H04B1/06 ,  H03G1/00 ,  H03G3/30 ,  H04B20060101 ,  H04B1/10 ,  H04B1/16 ,  H04B1/18 ,  H04B1/40 ,  H04B1/7075 ,  H04B1/7097 ,  H04B3/06 ,  H04B7/005 ,  H04B7/26 ,  H04B15/00 ,  H04B07/005

Abstract: El método y aparato de la presente invencion mejora la inmunidad a la interferencia de un radio receptor. El nivel de potencia de una señal recibida se detecta. Si el nivel de potencia cumple o excede un umbral de potencia predeterminado, el amplificador de los componentes receptores. Las modalidades alternativas incluyen el uso de un detector de potencia de RF (105) para controlar la ganancia del extremo frontal (110) como una funcion de potencia emisora interferente. En lugar de un bloque de ganancia de RF conmutable (730), se proponen varios métodos de control de ganancia continuo. El control de ganancia continuo permite la supresion de interferencia y la sensibilidad del receptor para ajustarse a niveles de señal inferiores al bloque de ganancia conmutable. Un método de la presente invencion ajusta la ganancia de entrada en una cantidad predeterminada (1601). El procesamiento de receptor mide el cambio de ganancia en la potencia de señal de IF (1605). Si el cambio es menor a la cantidad predeterminada (1610), la señal de CDMA y los emisores perturbadores se encuentran por debajo del piso de ruido y, por consiguiente, la ganancia se incrementa (1615). Si el cambio de la potencia de señal IF es mayor a la cantidad predeterminada, la interferencia es evidente y la ganancia se reduce para reducir los productos de intermodulacion (1620). Este proceso se utiliza hasta que el receptor opera al mejor compromiso entre interferencia y figura de ruido.

公开(公告)号：FI971759A

公开(公告)日：1997-07-08

申请号：FI971759

申请日：1997-04-24

Applicant: QUALCOMM INC

Inventor： PITTA THOMAS A ,  PETERZELL PAUL E ,  KORNFELD RICHARD K ,  WEILAND ANA L ,  WALLACE RAYMOND C

IPC: H01P1/213 ,  H03H7/46 ,  H04B1/40 ,  H01Q

Abstract: A dual-band antenna system for use in a portable communications device is disclosed herein. The antenna system includes an antenna element for radiating electromagnetic energy within low-band and high-band wavelength ranges. In a preferred embodiment, a low-band isolator network, coupled to the antenna element, provides signal isolation between high-band and low-band signal paths during high-band operation. Similarly, a high-band isolator network provides signal isolation, during operation over the low-band range of wavelengths, between the high-band and low-band signal paths. During transmit and receive operation, low-band and high-band electromagnetic energy directed through the antenna is passed by the low-band and high-band isolator networks, respectively. Also included are low-band and high-band matching networks which couple the low-band and high-band isolator networks to low-band and high-band transceiver circuitry.

公开(公告)号：MX9504538A

公开(公告)日：1997-05-31

申请号：MX9504538

申请日：1995-02-17

Applicant: QUALCOMM INC

Inventor： WEILAND ANA L ,  KORNFELD RICHARD K ,  KERR RICHARD J ,  MALONEY JOHN E ,  WILSON NATHANIEL B

IPC: H04B1/40 ,  H04B1/04 ,  H04B7/005 ,  H04B7/26 ,  H04W52/06 ,  H04W52/52 ,  H04B07/005

Abstract: El proceso y aparatos de la presente invencion limitan la salida de potencia de un radioteléfono que opera en un sistema celular en la modalidad preferida. Esto asegura que las bandas laterales transmitidas y el ruido de la fase sintetizadora permanezca dentro de una cierta especificacion. Esto se lleva a cabo mediante la deteccion de potencia y un acumulador de correccion que en conjunto generan una señal de control de ganancia al limitar el ajuste de ganancia a un valor máximo, incluso cuando el sitio celular que se comunica con el radioteléfono envía comandos de ascenso de potencia al radioteléfono. Este proceso incluye corregir de manera dinámica el nivel de salida del transmisor debido a las variaciones de ganancia en las etapas del transmisor o los elementos de control de ganancia.