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公开(公告)号：EP1632074A4
公开(公告)日：2007-04-25
申请号：EP04785738
申请日：2004-04-30
Applicant: INTERDIGITAL TECH CORP
Inventor： DEMIR ALPASLAN , KAZAKEVICH LEONID , HAQUE TANBIR
CPC classification number: H04B1/30 , H03C3/406 , H04L2027/0016 , H04L2027/0018
Abstract: A method and system for determining at least one DC offset compensation value used to suppress carrier leakage occurring on real and imaginary signal paths in an analog radio transmitter when a significant temperature change in the transmitter is detected. At least one DC offset signal having a level that corresponds to the at least one DC offset compensation value is provided to a digital DC offset compensation module which adjusts the DC level of at least one of the real and imaginary signal paths.
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12.发明公开
公开(公告)号：EP1568192A4
公开(公告)日：2006-08-23
申请号：EP03783365
申请日：2003-11-14
Applicant: INTERDIGITAL TECH CORP
Inventor： OZLUTURK FATIH , KAZAKEVICH LEONID , HAQUE TANBIR , DEMIR ALPASLAN , NARAYAN GEETHA LAKSHMI , KEARNEY KENNETH
CPC classification number: H03G3/001 , H03D3/008 , H03D3/009 , H03G3/3068 , H03G3/3089 , H03G2201/103 , H03G2201/202 , H03G2201/302 , H03G2201/307 , H03G2201/508 , H04B1/30 , H04L2027/0016 , H04L2027/0024
Abstract: In order to compensate for performance degradation caused by inferior low-cost analog radio component (105) tolerances of an analog radio (100), a future system architecture (FSA) wireless communication transceiver employs numerous digital signal processing techniques to compensate for deficiencies of such analog components so that modern specifications may be relaxed. Automatic gain control (110) functions are provided in the digital domain, so as to provide enhanced phase and amplitude compensation, as well as many other radio frequency parameters.
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13.发明公开DIGITAL BASEBAND RECEIVER INCLUDING A HIGH PASS FILTER COMPENSATION MODULE FOR SUPPRESSING GROUP DELAY VARIATION DISTORTION INCURRED DUE TO ANALOG HIGH PASS FILTER DEFICIENCIES 有权DIGITALER BASISBAND-EMPFÄNGERMIT HOCHPASSFILTER-KOMPENSATIONSMODUL ZURUNTERDRÜCKUNGVON AUFGRUND VONUNZULÄNGLICHKEITENEINES ANALOGEN HOCHPASSFILTERS AUFTRETENDENGRUPPENVERZÖGERUNGS-SCHWANKUNGS-VERZERRUNGEN
公开(公告)号：EP1642392A4
公开(公告)日：2006-08-02
申请号：EP04752756
申请日：2004-05-20
Applicant: INTERDIGITAL TECH CORP
Inventor： DEMIR ALPASLAN , KAZAKEVICH LEONID , HAQUE TANBIR
IPC: H03D3/00
CPC classification number: H03D3/009
Abstract: A digital baseband (DBB) radio frequency (RF) receiver includes a digital high pass filter compensation (HPFC) module used to suppress group delay variation distortion caused by using low cost analog high pass filters (HPFs) in the receiver. The digital HPFC module reduces a cutoff frequency, established by the HPFs for the real and imaginary signal component frequency domain responses by providing a first compensation signal having a first predetermined value (K1). The digital HPFC module adjusts the gain of the high pass response of the real and imaginary signal component frequency domains by providing a second compensation signal having a second predetermined value (K2).
Abstract translation: 数字基带（DBB）射频（RF）接收器包括一个数字高通滤波器补偿（HPFC）模块，用于抑制在接收器中使用低成本模拟高通滤波器（HPF）导致的群时延变化失真。 数字HPFC模块通过提供具有第一预定值（K1）的第一补偿信号来减小由HPF建立的实部和虚部信号分量频域响应的截止频率。 数字HPFC模块通过提供具有第二预定值（K2）的第二补偿信号来调整实信号分量频域和虚信号分量频域的高通响应的增益。
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公开(公告)号：AT429068T
公开(公告)日：2009-05-15
申请号：AT03783365
申请日：2003-11-14
Applicant: INTERDIGITAL TECH CORP
Inventor： OZLUTURK FATIH , KAZAKEVICH LEONID , HAQUE TANBIR , DEMIR ALPASLAN , NARAYAN GEETHA , KEARNEY KENNETH
Abstract: In order to compensate for performance degradation caused by inferior low-cost analog radio component tolerances of an analog radio, a future system architecture (FSA) wireless communication transceiver employs numerous digital signal processing (DSP) techniques to compensate for deficiencies of such analog components so that modern specifications may be relaxed. Automatic gain control (AGC) functions are provided in the digital domain, so as to provide enhanced phase and amplitude compensation, as well as many other radio frequency (RF) parameters.
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公开(公告)号：AU2004253071B2
公开(公告)日：2007-05-24
申请号：AU2004253071
申请日：2004-05-06
Applicant: INTERDIGITAL TECH CORP
Inventor： KAZAKEVICH LEONID , DEMIR ALPASLAN , HAQUE TANBIR
Abstract: A communication system including an automatic control (AGC) circuit, a receiver, an analog to digital converter (ADC) and an insertion phase variation compensation module. The AGC circuit receives and amplifies communication signals. The gain of the AGC circuit is continuously adjusted. The AGC circuit outputs an amplified signal to the receiver which, in turn, outputs an analog complex signal to the ADC. The ADC outputs a digital complex signal to an insertion phase variation compensation module which counteracts the effects of phase offsets introduced into the communication signal due to the continuous gain adjustments associated with the AGC circuit.
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Patent Agency Ranking
公开(公告)号：NO20065032A
公开(公告)日：2006-11-02
申请号：NO20065032
申请日：2006-11-02
Applicant: INTERDIGITAL TECH CORP
Inventor： KAZAKEVICH LEONID , HAQUE TANBIR , DEMIR ALPASLAN , KLAHN GERALD
CPC classification number: H04B1/0458 , H03F1/0261 , H03F1/56 , H03F3/24 , H03F2200/207 , H03F2200/465 , H03G3/3042 , H04W52/52 , Y02D70/14
Abstract: A method and apparatus for dynamically adjusting the impedance between a transmitter's power amplifier (PA) and antenna to efficiently transfer power from the PA to the antenna. The impedance between the PA and the antenna is adjusted based on power level measurements and/or PA direct current (DC) consumption measurements, depending on whether the PA is a linear PA or a switch-mode PA. In another embodiment, a hybrid PA including a first stage linear PA and a second stage switch-mode PA is implemented in a transmitter. The hybrid PA selectively connects the output of the first stage linear PA to one of the input of the second stage switch-mode PA and the output of the hybrid PA, depending on the output power level of the first stage linear PA, the output power level of the hybrid PA, or a requirement indicated by a transmit power control (TPC) command.
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公开(公告)号：AR044594A1
公开(公告)日：2005-09-21
申请号：ARP040101912
申请日：2004-06-03
Applicant: INTERDIGITAL TECH CORP
Inventor： DEMIR ALPASLAN , KAZAKEVICH LEONID , HAQUE TANBIR
Abstract: Un sistema de comunicación que incluye un amplificador, un receptor, un conversor de análogo a digital (ADC) y un módulo de compensación de variación de fase de inserción. El amplificador recibe una señal de comunicación. Si el amplificador está habilitado, el amplificador amplifica la señal de comunicación y da salida a la señal de comunicación amplificada al receptor. Si el amplificador está deshabilitado, el amplificador pasa la señal de comunicación al receptor sin amplificarla. El receptor da salida a una señal compleja análoga al ADC. El ADC da salida a una señal compleja digital al módulo de compensación de variación de fase de inserción que contrarresta los efectos de un desplazamiento de fase introducido de manera intermitente en la señal de comunicación cuando el amplificador está habilitado o deshabilitado.
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公开(公告)号：DE60327245D1
公开(公告)日：2009-05-28
申请号：DE60327245
申请日：2003-11-14
Applicant: INTERDIGITAL TECH CORP
Inventor： OZLUTURK FATIH , KAZAKEVICH LEONID , HAQUE TANBIR , DEMIR ALPASLAN , NARAYAN GEETHA LAKSHMI , KEARNEY KENNETH
Abstract: In order to compensate for performance degradation caused by inferior low-cost analog radio component tolerances of an analog radio, a future system architecture (FSA) wireless communication transceiver employs numerous digital signal processing (DSP) techniques to compensate for deficiencies of such analog components so that modern specifications may be relaxed. Automatic gain control (AGC) functions are provided in the digital domain, so as to provide enhanced phase and amplitude compensation, as well as many other radio frequency (RF) parameters.
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公开(公告)号：DE602004009579D1
公开(公告)日：2007-11-29
申请号：DE602004009579
申请日：2004-05-20
Applicant: INTERDIGITAL TECH CORP
Inventor： DEMIR ALPASLAN , KAZAKEVICH LEONID , HAQUE TANBIR
IPC: H03D3/00
Abstract: A digital baseband (DBB) radio frequency (RF) receiver includes a digital high pass filter compensation (HPFC) module used to suppress group delay variation distortion caused by using low cost analog high pass filters (HPFs) in the receiver. The digital HPFC module reduces a cutoff frequency, established by the HPFs for the real and imaginary signal component frequency domain responses by providing a first compensation signal having a first predetermined value (K 1 ). The digital HPFC module adjusts the gain of the high pass response of the real and imaginary signal component frequency domains by providing a second compensation signal having a second predetermined value (K 2 ).
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公开(公告)号：MXPA06010997A
公开(公告)日：2007-01-25
申请号：MXPA06010997
申请日：2005-03-18
Applicant: INTERDIGITAL TECH CORP
Inventor： KAZAKEVICH LEONID , DEMIR ALPASLAN , HAQUE TANBIR , KLAHN GERALD
Abstract: Un metodo y aparato para ajustar dinamicamente la impedancia entre el amplificador de potencia (PA) y la antena del transmisor, para transferir eficientemente potencia desde el PA a la antena. La impedancia entre el PA y la antena se ajusta en base a las mediciones del nivel de potencia y/o mediciones de consumo de corriente directa (DC) del PA, dependiendo si el PA es un PA lineal o un PA de modo conmutado. En otra modalidad, en el transmisor se implementa un PA hibrido que incluye un PA lineal de primera etapa y un PA de modo conmutado de segunda etapa. El PA hibrido conecta selectivamente la salida del PA lineal de primera etapa a una de la entrada del PA de modo conmutado de segunda etapa y la salida del PA hibrido, dependiendo del nivel de potencia de salida del PA lineal de primera etapa, el nivel de potencia de salida del PA hibrido, o un requerimiento indicado por la orden de control de potencia de transmision (TPC).
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