公开(公告)号：AT339811T

公开(公告)日：2006-10-15

申请号：AT04019499

申请日：1995-12-11

Applicant: QUALCOMM INC

Inventor： WHEATLEY CHARLES E ,  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 ,  H04B1/707 ,  H03G3/20

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：BR0114908A

公开(公告)日：2006-05-09

申请号：BR0114908

申请日：2001-10-24

Applicant: QUALCOMM INC

Inventor： SEE PUAY HOE ,  PETERZELL PAUL E ,  WALKER BRETT C

IPC: H04B1/30 ,  H04B1/40

Abstract: A zero Intermediate Frequency (IF) transmitter and receiver are implemented within a transceiver to eliminate interference in the receive band. An output of a tunable high oscillator to generate a frequency source that is an integer multiple of the desired transmit LO frequency. The frequency source is coupled to an amplitude limiter and frequency divider. The output of the frequency divider is used as the transmit LO to directly upconvert baseband signals to the desired output frequency without the need for an IF stage. Direct upconversion of the baseband transmit signals without an IF stage eliminates spurious frequency products that are produced in the receive band.

公开(公告)号：FI116342B

公开(公告)日：2005-10-31

申请号：FI972501

申请日：1997-06-12

Applicant: QUALCOMM INC

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

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：ES2225851T3

公开(公告)日：2005-03-16

申请号：ES95943046

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

Abstract: EL METODO Y EL APARATO DE LA INVENCION MEJORA LA INMUNIDAD A LAS INTERFERENCIAS DE UN RECEPTOR DE RADIO. SE DETECTA EL NIVEL DE POTENCIA DE UNA SEÑAL RECIBIDA. SI EL NIVEL DE POTENCIA IGUALA O EXCEDE UN LIMITE DE POTENCIA PREDETERMINADO, EL AMPLIFICADOR DE RUIDO BAJO (703) ES DERIVADO (730), INCREMENTADO DE ESTA FORMA EL PUNTO DE INTERSECCION DE LOS COMPONENTES DEL RECEPTOR. REALIZACIONES ALTERNATIVAS INCLUYEN EL USO DE UN DETECTOR DE POTENCIA DE RF (105) PARA CONTROLAR LA GANANCIA DE LA SECCION DE ENTRADA (110) COMO FUNCION DE LA POTENCIA DE PERTURBACION. EN LUGAR DE UN BLOQUE DE GANANCIA DE RF CONMUTABLE (730), SE PROPONEN VARIOS METODOS DE CONTROL CONTINUO DE LA GANANCIA. EL CONTROL CONTINUO DE LA GANANCIA PERMITE SUPRIMIR LAS INTERFERENCIAS Y AJUSTAR LA SENSIBILIDAD DEL RECEPTOR A MENORES NIVELES DE SEÑAL QUE EL BLOQUE DE GANANCIA CONMUTABLE. UN METODO DE LA INVENCION AJUSTA LA GANANCIA DE ENTRADA EN UNA CANTIDAD PREDETERMINADA (1601). EL PROCESAMIENTO DEL RECEPTOR MIDE EL CAMBIO DE GANANCIA EN LA POTENCIA DE LA SEÑAL DE IF (1605). SI EL CAMBIO ES MENOR QUE LA CANTIDAD PREDETERMINADA (1610), LA SEÑAL DE CDMA Y LAS EMISIONES PERTURBADORAS ESTAN POR DEBAJO DEL SUELO DE RUIDO Y, POR LO TANTO, LA GANANCIA SE INCREMENTA (1605). SI EL CAMBIO DE POTENCIA DE LA SEÑAL DE IF ES MAYOR QUE 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 ESTE OPERATIVO CON LA MEJOR RELACION ENTRE EL VALOR DE INTERFERENCIA Y DE RUIDO.

公开(公告)号：MY118899A

公开(公告)日：2005-02-28

申请号：MYPI9902801

申请日：1999-07-02

Applicant: QUALCOMM INC

Inventor： IV HUTCHISON JAMES A ,  HOVE TAD A ,  PETERZELL PAUL E

IPC: H01M10/44 ,  H02J7/34 ,  H01M10/46 ,  H02J7/00 ,  H02J7/02 ,  H04B1/38 ,  H04B7/26 ,  H04M1/72 ,  H04M1/725

Abstract: A PORTABLE PHONE HAS AN INTERNAL BATTERY (10) AND AN EXTERNAL BATTERY PACK (12) THAT IS RELEASABLY ATTACHABLE TO THE PHONE. A CONTROL UNIT IN THE PHONE CONTROLS CONNECTION OF THE RESPECTIVE BATTERIES TO A PHONE POWER INPUT, DEPENDING ON THE DETECTION OF THE EXTERNAL BATTERY VOLTAGE. WHENEVER AN EXTERNAL BATTERY IS PRESENT WITH A VOLTAGE ABOVE A PREDETERMINED MINIMUM VALUE, THE EXTERNAL BATTERY WILL BE CONNECTED TO THE PHONE POWER INPUT TO PROVIDE POWER TO OPERATE THE PHONE, SO THAT THE INTERNAL BATTERY LIFETIME IS EXTENDED. WHEN THE EXTERNAL BATTERY VOLTAGE FALLS BELOW THE MINIMUM VALUE, OR THE EXTERNAL BATTERY IS REMOVED, THE UNIT AUTOMATICALLY SWITCHES TO INTERNAL BATTERY POWER, SO THAT THE EXTERNAL BATTERY CAN BE CHANGED WITHOUT INTERRUPTING POWER SUPPLY TO THE PHONE, IF THE PHONE IS ON OR DURING A CALL. AN IMPROVED MULTI-PHASE SOFTWARE CONTROLLED BATTERY-CHARGING METHOD AND APPARATUS IS USED TO CHARGE THE INTERNAL AND EXTERNAL BATTERY PACKS.THE PREFERRED BATTERY-CHARGING METHOD USES A MULTI-PHASED CHARGING APPROACH COMPRISING A TRICKLE-CHARGING PHASE (106), A FAST-CHARGING PHASE (108), AND A TOP-OFF CHARGING PHASE (110 AND 112). THE INTERNAL BATTERY (10) IS CHARGED TO NEAR-FULL CAPACITY BY TRICKLE-CHARGING (102) (WHEN REQUIRED) AND SUBSEQUENTLY FAST-CHARGING(104) THE BATTERY. THE EXTERNAL BATTERY (12) IS SIMILARLY CHARGED TO NEAR-FULL CAPACITY (128). THUS, BOTH BATTERIES ARE CHARGED TO NEAR-FULL CAPACITY IN A SUBSTANTIALLY REDUCED CHARGING TIME PERIOD AS COMPARED WITH THE TOTAL CHARGING TIME.

公开(公告)号：BR0206415A

公开(公告)日：2004-10-19

申请号：BR0206415

申请日：2002-01-10

Applicant: QUALCOMM INC

Inventor： PETERZELL PAUL E ,  MALDONADO DAVID ,  GARD KEVIN ,  SEE ANDREW PUAY HOE ,  DUNWORTH JEREMY D ,  SAHOTA KAMAL

IPC: H03L7/183 ,  G01N33/14 ,  H03D3/00 ,  H04B1/30 ,  H04B1/40

Abstract: A system and method for generating a local oscillator (LO) frequency in a zero intermediate frequency (IF) receiver or transmitter is presented. A signal is received from a voltage controlled oscillator (VCO). The signal has a VCO frequency. The VCO frequency is divided by a number N to produce a signal having a divided-down frequency. The signal having the VCO frequency is then mixed with the signal having the divided-down frequency to produce an output signal having an output frequency. Local oscillator leakage is reduced. Thus, the receiver or transmitter may operate in multiple wireless communication bands and modes and meet the associated specifications.

公开(公告)号：BR0206416A

公开(公告)日：2004-06-22

申请号：BR0206416

申请日：2002-01-10

Applicant: QUALCOMM INC

Inventor： PETERZELL PAUL E ,  SAHOTA KAMAL

IPC: H04B1/10 ,  H04B1/30 ,  H04B1/40

公开(公告)号：AU760135B2

公开(公告)日：2003-05-08

申请号：AU4859799

申请日：1999-07-02

Applicant: QUALCOMM INC

Inventor： HUTCHISON JAMES A ,  HOVE TAD A ,  PETERZELL PAUL E

IPC: H02J7/34 ,  H01M10/44 ,  H02J7/00 ,  H02J7/02 ,  H04B1/38 ,  H04B7/26 ,  H04M1/72 ,  H04M1/725

Abstract: A portable phone has an internal battery and an external battery pack that is releasably attachable to the phone. A control unit in the phone controls connection of the respective batteries to a phone power input, depending on the detection of the external battery voltage. Whenever an external battery is present with a voltage above a predetermined minimum value, the external battery will be connected to the phone power input to provide power to operate the phone, so that the internal battery lifetime is extended. When the external battery voltage falls below the minimum value, or the external battery is removed, the unit automatically switches to internal battery power, so that the external battery can be changed without interrupting power supply to the phone, if the phone is on or during a call. An improved multi-phase software controlled battery-charging method and apparatus is used to charge the internal and external battery packs. The preferred battery-charging method uses a multi-phased charging approach comprising a trickle-charging phase, a fast-charging phase, and a top-off charging phase. The internal battery is charged to near-full capacity by trickle-charging (when required) and subsequently fast-charging the battery. The external battery is similarly charged to near-full capacity. Thus, both batteries are charged to near-full capacity in a substantially reduced charging time period as compared with the total charging time.

公开(公告)号：CA2723046A1

公开(公告)日：2002-08-29

申请号：CA2723046

申请日：2002-02-15

Applicant: QUALCOMM INC

Inventor： LI TAO ,  HOLENSTEIN CHRISTIAN ,  KANG INYUP ,  WALKER BRETT C ,  PETERZELL PAUL E ,  CHALLA RAGHU ,  SEVERSON MATTHEW L ,  RAGHUPATHY ARUN ,  SIH GILBERT C

IPC: H03G1/00 ,  H04B1/16 ,  H03G3/00 ,  H03G3/20 ,  H03G3/30 ,  H04B1/30 ,  H04J13/00 ,  H04L27/22 ,  H04L27/38

Abstract: A direct downconversion receiver architecture having a DC loop to remove DC offset from the signal components, a digital variable gain amplifier (DVGA) to provide a range of gains, an automatic gain control (AGC) loop to provide gain control for the DVGA and RF/analog circuitry, and a serial bus interface (SBI) unit to provide controls for the RF/analog circuitry via a serial bus. The DVGA may be advantageously designed and located as described herein. The operating mode of the VGA loop may be selected based on the operating mode of the DC loop, since these two loops interact with one another. The duration of time the DC loop is operated in an acquisition mode may be selected to be inversely proportional to the DC loop bandwidth in the acquisition mode. The controls for some or all of the RF/analog circuitry may be provided via the serial bus.

公开(公告)号：IN188113B

公开(公告)日：2002-08-17

申请号：IN97MA1995

申请日：1995-01-30

Applicant: QUALCOMM INC

Inventor： PETERZELL PAUL E ,  WILSON NATHANIEL B ,  BLACK PETER J

IPC: H04J99/00 ,  H04J15/00