公开(公告)号：DE69535799D1

公开(公告)日：2008-09-11

申请号：DE69535799

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: 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：AU2002244049B2

公开(公告)日：2007-12-20

申请号：AU2002244049

申请日：2002-02-15

Applicant: QUALCOMM INC

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

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

Abstract: An apparatus and method in a wireless communication system, the apparatus comprising: first means for amplifying a received signal; means for cancelling a DC offset in the amplified signal; second means for digitally amplifying the DC offset cancelled signal; and means for measuring the digitally amplified signal and to control the gains of the first and second amplifying means.

公开(公告)号：FI117365B

公开(公告)日：2006-09-15

申请号：FI20001942

申请日：2000-09-04

Applicant: QUALCOMM INC

Inventor： CICCARELLI STEVEN C ,  KAUFMAN RALPH E ,  PETERZELL PAUL E

IPC: H03F1/02 ,  H03F1/26 ,  H03F1/32 ,  H03F1/34 ,  H03G1/00 ,  H03G3/18 ,  H03G3/20 ,  H04B1/10 ,  H04B1/16

Abstract: An amplifier having an adjustable current source which can be controlled to provide the requisite level of performance at reduced current consumption. The amplifier is first designed using one of many designs available and known in the art. A current source is then designed to provide adjustable bias current for the amplifier. The current source can be designed with MOSFETs which require no additional bias current and can accept a standard digital control signal. The current source can also be designed with active devices which are selected based on the logic of the control signals for ease of interface. The bias current determines the linearity and noise performance of the amplifier. The bias current is adjusted to provide the requisite level of performance while reducing power consumption. The current source can be designed to operate in discrete steps or to have substantially continuous current steps.

公开(公告)号：MY124409A

公开(公告)日：2006-06-30

申请号：MYPI9902455

申请日：1999-06-15

Applicant: QUALCOMM INC

Inventor： PETERZELL PAUL E ,  ROSS DAVID J ,  MARLAND CHOW

IPC: H02J7/00 ,  H04M1/02 ,  H04B1/38

Abstract: A PORTABLE PHONE (10) HAS AN OUTER CASING (14) WITH OPPOSITE UPPER AND LOWER WALLS (16, 18), ONE OF THE WALLS HAVING AN OPENING (24) FOR ACCESS TO THE INTERIOR OF THE CASING, AND A LID (28) REMOVABLY MOUNTED IN THE OPENING FOR NORMALLY CLOSING THE OPENING. A MAIN CIRCUIT BOARD (22) IS MOUNTED IN THE OUTER CASING, WITH A PLURALITY OF PHONE COMPONENTS (30) MOUNTED ON THE CIRCUIT BOARD. A PREDETERMINED REGION (26) OF THE BOARD ALIGNED WITH THE OPENING IS LEFT EXPOSED OR EMPTY OF COMPONENTS, AND FORMS A RECESS FOR RECEIVING A BATTERY (12). THE BATTERY RECEIVING RECESS (26) HAS CONTACT PADS (39, 40), AND A BATTERY (12) IS REMOVABLY ENGAGED IN THE RECESS WITH BATTERY CONTACTS ENGAGING THE CONTACT PADS IN THE RECESS, WHEREBY THE BATTERY CAN BE REMOVED AND REPLACED VIA THE OPENING AFTER OPENING THE LID.(FIG. 1)

公开(公告)号：FI115267B

公开(公告)日：2005-03-31

申请号：FI964345

申请日：1996-10-28

Applicant: QUALCOMM INC

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

IPC: H03G3/20 ,  H03G3/30 ,  H04B1/16 ,  H04B1/18 ,  H04L27/22 ,  H04L27/38

Abstract: An automatic gain control (AGC) apparatus for a digital receiver is disclosed herein. The AGC apparatus includes an adjustable gain amplifier having an input port for receiving an input signal, a control port for receiving a gain control signal, and an output port for providing an output signal. The AGC apparatus further includes a measurement circuit for generating a received power signal based on the power of the output signal. A saturating integrator compares the received power signal to a reference signal and generates an gain control signal in response to a result of the comparison. The saturating integrator includes a decision circuit for enabling integration based on values of the received power signal, the reference signal, and the gain control signal. In a preferred implementation the utilization of an input limiter in conjunction with an analog to digital converter enables accommodation of an increased input signal dynamic range. Accordingly, the AGC apparatus is capable of being used in digital demodulation of FM signals. The AGC apparatus may also be employed within a dual mode receiver designed to process both FM and code division multiple access (CDMA) input signals.

公开(公告)号：AT274260T

公开(公告)日：2004-09-15

申请号：AT95943046

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: 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：HK1061316A1

公开(公告)日：2004-09-10

申请号：HK04104264

申请日：2004-06-14

Applicant: QUALCOMM INC

Inventor： PETERZELL PAUL E ,  SAHOTA KAMAL

IPC: H04B20060101 ,  H04B1/10 ,  H04B1/30 ,  H04B1/40

公开(公告)号：IN192676B

公开(公告)日：2004-05-15

申请号：IN1551MA1995

申请日：1995-11-27

Applicant: QUALCOMM INC

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

IPC: H04B1/00 ,  H04B7/00

公开(公告)号：MXPA03003663A

公开(公告)日：2004-05-04

申请号：MXPA03003663

申请日：2001-10-24

Applicant: QUALCOMM INC

Inventor： PETERZELL PAUL E

IPC: H04B1/30 ,  H04B1/40

Abstract: Un transmisor y receptor de Frecuencia Intermedia (IF) se implementan dentro de un transceptor para eliminar la interferencia en la banda de recepcion. Una salida de un oscilador superior sintonizable para generar una fuente de frecuencia que es un multiplo entero de la frecuencia LO de transmision deseada. La fuente de frecuencia esta acoplada a un limitador de amplitud y divisor de frecuencia. La salida del divisor de frecuencia se utiliza como el LO de transmision para convertir en forma ascendente directamente las senales de banda base a la frecuencia de salida deseada, sin la necesidad de una etapa IF. La conversion ascendente directa de las senales de transmision de banda base sin una etapa IF, elimina los productos de frecuencia espuria que se producen en la banda de recepcion.

公开(公告)号：FI112740B

公开(公告)日：2003-12-31

申请号：FI956286

申请日：1995-12-27

Applicant: QUALCOMM INC

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

IPC: H03D3/00 ,  H03D3/24 ,  H03G3/20 ,  H03D7/16 ,  H03G3/30 ,  H04B1/30 ,  H04L27/14 ,  H04L27/22 ,  H04B1/16

Abstract: An automatic gain control (AGC) and D.C. offset correction method and apparatus for controlling signal power of a received RF signal within a dual mode quadrature receiver is disclosed herein. In a preferred implementation the automatic gain control apparatus may be adjusted to provide a desired control response to various fading characteristics of a received FM, FSK, GMSK, QPSK, or BPSK signal. The AGC apparatus includes an adjustable gain amplifier having an input port for receiving an input signal, a control port for receiving a gain control signal, and an output port for providing an output signal. A quadrature downconverter coupled to the output port serves to translate the frequency of the output signal to a baseband frequency, thereby producing baseband signals. In a preferred implementation the downconverter is operative to map the carrier frequency of the output signal to a baseband frequency offset by a predetermined margin from D.C. Two high gain active lowpass filters provide out-of-band signal rejection for the baseband signals. A D.C. feedthrough suppression loop, disposed to receive said baseband signal, suppresses D.C. offsets produced by the downconverter and lowpass filters, hence providing a compensated baseband signal. The AGC apparatus is further disposed to generate a received power signal based on the power of the output signal. A saturating integrator compares the received power signal to a reference signal and produces the gain control signal by integrating or by refraining from integration based on values of the reference, received power signal, and gain control signals, thereby extending the usable dynamic range of the receiver for FM mode.