公开(公告)号：BR9916202A

公开(公告)日：2002-04-02

申请号：BR9916202

申请日：1999-12-14

Applicant: QUALCOMM INC

Inventor： MATHE LENNART

IPC: H03H17/04 ,  H03H17/02 ,  H03H17/06 ,  H04B3/06 ,  H04B7/005 ,  H04B7/26

Abstract: A low power programmable digital filter (10) adapted for use with a telecommunications system transceiver. The digital filter (10) includes a first finite impulse response filter section for receiving an input signal and having a first transfer function. An infinite impulse response filter section (18) is connected to the first finite impulse response filter section and has a second transfer function. A second finite impulse response filter section (22) is connected to the infinite impulse response filter section and outputs a filtered output signal in response to the receipt of the input signal (28) by the programmable digital filter (10).

公开(公告)号：AU2053100A

公开(公告)日：2000-07-03

申请号：AU2053100

申请日：1999-12-14

Applicant: QUALCOMM INC

Inventor： MATHE LENNART

IPC: H03H17/04 ,  H03H17/02 ,  H03H17/06 ,  H04B3/06 ,  H04B7/005 ,  H04B7/26

Abstract: A low power programmable digital filter (10) adapted for use with a telecommunications system transceiver. The digital filter (10) includes a first finite impulse response filter section for receiving an input signal and having a first transfer function. An infinite impulse response filter section (18) is connected to the first finite impulse response filter section and has a second transfer function. A second finite impulse response filter section (22) is connected to the infinite impulse response filter section and outputs a filtered output signal in response to the receipt of the input signal (28) by the programmable digital filter (10).

公开(公告)号：SG11202009495XA

公开(公告)日：2020-11-27

申请号：SG11202009495X

申请日：2019-03-04

Applicant: QUALCOMM INC

Inventor： WADHWA SAMEER ,  WANG YI ,  MATHE LENNART

IPC: G05F3/20 ,  H03K3/011

Abstract: In certain aspects, a bias generation circuit comprises a bias voltage generator. The bias voltage generator has a main NMOS transistor having a drain and a gate of the main NMOS transistor both coupled to a first terminal, a main resistor having a first main resistor terminal and a second main resistor terminal, wherein the first main resistor terminal couples to a source of the main NMOS transistor; and a main PMOS transistor having a source of the main PMOS transistor coupled to the second main resistor terminal and a drain and a gate of the main PMOS transistor both coupled to a second terminal, wherein the second terminal couples to a main ground. The bias generation circuit further comprises an array of sensors coupled to the first terminal and the second terminal.

公开(公告)号：DE60013108D1

公开(公告)日：2004-09-23

申请号：DE60013108

申请日：2000-04-11

Applicant: QUALCOMM INC

Inventor： HAMDY WALID ,  MATHE LENNART ,  SUTTON TODD

IPC: H04B1/7097 ,  H04B1/707 ,  H04B1/71 ,  H04Q7/34

Abstract: A method for detecting in-band interfering signals, in a wireless communication base station, the method comprising: performing downconversion and bandpass-filtering of a received analog signal to produce a downconverted bandpass-filtered analog signal which resides approximately within a predetermined reverse-link frequency band; performing automatic gain control (204) of said downconverted bandpass-filtered analog signal to produce a first gain-controlled signal whose RMS amplitude is approximately equal to a predetermined value; performing analog-to-digital conversion (208) of said first gain-controlled signal to create a stream of digital samples; performing analysis (212) of said stream of digital samples to create a first set of sub-band power measurements corresponding to the received power associated with adjacent frequency sub-bands, each sub-band representing a fraction of a predetermined spectrum analysis band, said spectrum analysis band including frequency components outside of said reverse-link frequency band; and performing spectrum evaluation (216), comprising: identifying a group of one or more adjacent sub-band power measurements which exceed a predetermined threshold; and identifying any group of one or more sub-band power measurements which is inside the reverse-link frequency band, and are less than a predetermined minimum or threshold.

公开(公告)号：HK1042996A1

公开(公告)日：2002-08-30

申请号：HK02104769

申请日：2002-06-27

Applicant: QUALCOMM INC

Inventor： HAMDY WALID ,  MATHE LENNART ,  SUTTON TODD

IPC: H04B1/7097 ,  H04B1/707 ,  H04B1/71 ,  H04Q7/34

Abstract: A method for detecting in-band interfering signals, in a wireless communication base station, the method comprising: performing downconversion and bandpass-filtering of a received analog signal to produce a downconverted bandpass-filtered analog signal which resides approximately within a predetermined reverse-link frequency band; performing automatic gain control (204) of said downconverted bandpass-filtered analog signal to produce a first gain-controlled signal whose RMS amplitude is approximately equal to a predetermined value; performing analog-to-digital conversion (208) of said first gain-controlled signal to create a stream of digital samples; performing analysis (212) of said stream of digital samples to create a first set of sub-band power measurements corresponding to the received power associated with adjacent frequency sub-bands, each sub-band representing a fraction of a predetermined spectrum analysis band, said spectrum analysis band including frequency components outside of said reverse-link frequency band; and performing spectrum evaluation (216), comprising: identifying a group of one or more adjacent sub-band power measurements which exceed a predetermined threshold; and identifying any group of one or more sub-band power measurements which is inside the reverse-link frequency band, and are less than a predetermined minimum or threshold.

公开(公告)号：HK1042786A1

公开(公告)日：2002-08-23

申请号：HK02103353

申请日：2002-05-03

Applicant: QUALCOMM INC

Inventor： MATHE LENNART

IPC: H03H17/04 ,  H03H17/02 ,  H03H17/06 ,  H04B3/06 ,  H04B7/005 ,  H04B7/26 ,  H03H

Abstract: A low power programmable digital filter (10) adapted for use with a telecommunications system transceiver. The digital filter (10) includes a first finite impulse response filter section for receiving an input signal and having a first transfer function. An infinite impulse response filter section (18) is connected to the first finite impulse response filter section and has a second transfer function. A second finite impulse response filter section (22) is connected to the infinite impulse response filter section and outputs a filtered output signal in response to the receipt of the input signal (28) by the programmable digital filter (10).

公开(公告)号：WO2011119632A3

公开(公告)日：2011-12-22

申请号：PCT/US2011029464

申请日：2011-03-22

Applicant: QUALCOMM INC ,  YAMAMOTO KENTARO ,  MATHE LENNART

Inventor： YAMAMOTO KENTARO ,  MATHE LENNART

IPC: H03F3/217

CPC classification number: H03F3/217

Abstract: A discrete-time operational transconductance amplifier (OTA) with large gain and large output signal swing is described. In an exemplary design, the discrete-time OTA includes a clocked comparator and an output circuit. The clocked comparator receives an input voltage and provides a digital comparator output. The output circuit receives the digital comparator output and provides current pulses. The output circuit detects for changes in the sign of the input voltage based on the digital comparator output and reduces the amplitude of the current pulses when a change in the sign of the input voltage is detected. The output circuit also generates the current pulses to have a polarity that is opposite of the polarity of the input voltage. The discrete-time OTA may be used for switched-capacitor circuits and other applications.

Abstract translation: 描述了具有大增益和大输出信号摆幅的离散时间运算跨导放大器（OTA）。 在示例性设计中，离散时间OTA包括时钟比较器和输出电路。 时钟比较器接收输入电压并提供数字比较器输出。 输出电路接收数字比较器输出并提供电流脉冲。 输出电路基于数字比较器输出检测输入电压符号的变化，并且当检测到输入电压的符号的变化时，减小电流脉冲的幅度。 输出电路还产生电流脉冲以具有与输入电压的极性相反的极性。 离散时间OTA可用于开关电容电路和其他应用。