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公开(公告)号：WO2007120568A3
公开(公告)日：2008-08-14
申请号：PCT/US2007008523
申请日：2007-04-05
Applicant: HARRIS CORP
Inventor： CABRERA GEORGE , DITTMER TIMOTHY WILFRED , DUELLO WAYNE DOUGLAS
CPC classification number: H04B1/0483
Abstract: Systems and methods are provided for generating dual outputs in a digital exciter system. A first signal path (34) produces one of a frequency modulated audio signal, a digital information signal, and a signal comprising both frequency modulated audio and digital information A second signal path (36) produces one of a frequency modulated audio signal, a digital information signal, and a signal comprising both frequency modulated audio and digital information. A main exciter output provides one of the signal produced at the first signal path and the signal produced at the second signal path to an associated first destination (42). An auxiliary exciter output provides one of the signal produced at the first signal path and the signal produced at the auxiliary signal path to an associated second signal destination (44).
Abstract translation: 提供了用于在数字激励器系统中产生双输出的系统和方法。 第一信号路径（34）产生调频音频信号，数字信息信号和包括调频音频和数字信息两者的信号。第二信号路径（36）产生调频音频信号，数字 信息信号，以及包括调频音频和数字信息的信号。 主激励器输出提供在第一信号路径处产生的信号和在第二信号路径处产生到相关联的第一目的地（42）的信号之一。 辅助激励器输出提供在第一信号路径处产生的信号和在辅助信号路径处产生的信号到相关联的第二信号目的地（44）之一。
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公开(公告)号：WO2007120568B1
公开(公告)日：2008-10-09
申请号：PCT/US2007008523
申请日：2007-04-05
Applicant: HARRIS CORP
Inventor： CABRERA GEORGE , DITTMER TIMOTHY WILFRED , DUELLO WAYNE DOUGLAS
CPC classification number: H04B1/0483
Abstract: Systems and methods are provided for generating dual outputs in a digital exciter system. A first signal path (34) produces one of a frequency modulated audio signal, a digital information signal, and a signal comprising both frequency modulated audio and digital information A second signal path (36) produces one of a frequency modulated audio signal, a digital information signal, and a signal comprising both frequency modulated audio and digital information. A main exciter output provides one of the signal produced at the first signal path and the signal produced at the second signal path to an associated first destination (42). An auxiliary exciter output provides one of the signal produced at the first signal path and the signal produced at the auxiliary signal path to an associated second signal destination (44).
Abstract translation: 提供了用于在数字激励器系统中产生双输出的系统和方法。 第一信号路径（34）产生频率调制音频信号，数字信息信号和包括调频音频和数字信息二者的信号中的一个。第二信号路径（36）产生频率调制音频信号，数字 信息信号和包括调频音频和数字信息的信号。 主激励器输出将在第一信号路径处产生的信号和在第二信号路径处产生的信号中的一个提供给相关联的第一目的地（42）。 辅助激励器输出将在第一信号路径处产生的信号和在辅助信号路径处产生的信号中的一个提供给相关联的第二信号目的地（44）。
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公开(公告)号：EP1634379A4
公开(公告)日：2007-06-27
申请号：EP04785740
申请日：2004-05-03
Applicant: HARRIS CORP
Inventor： DUELLO WAYNE DOUGLAS , LUU KY THOAI , ABASCAL CARLOS , MATTSSON ANDERS S
CPC classification number: H03F1/3282 , H03F1/3241 , H04B1/0475
Abstract: A circuit for use in a broadcast transmitter for adaptively compensating for carrier signal distortions caused by amplitude modulating an RF carrier signal. The circuit includes a modulator/amplifier network that receives an RF carrier signal and modulates it by a received amplitude varying signal to obtain therefrom a modulated carrier signal which may exhibit distortions caused by the amplitude modulating of the RF carrier signal. A digitally adaptive corrector precorrects the amplitude varying signal prior to application thereof to the network to compensate for any modulated carrier signal distortions. This includes a digital processor that provides signal correction as a function of digital samples representing amplitude variations of the modulated RF carrier signal.
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公开(公告)号：CA2728249C
公开(公告)日：2014-06-03
申请号：CA2728249
申请日：2011-01-13
Applicant: HARRIS CORP
Inventor： DUELLO WAYNE DOUGLAS , HALOZAN SCOTT FREDERICK
Abstract: A digital exciter is presented herein for use in RF broadcasting and wherein the exciter employs pilot signal compensation. This includes an input digital circuit for receiving a modulated digital data at an input sample rate for RF broadcasting at a desired RF frequency. The pilot frequency may be displaced from a desired location at the frequency band because of an error in the input sample rate. A digital compensator determines whether the pilot frequency is displaced and provides a digital correction signal in accordance therewith. A digital correction circuit corrects the pilot frequency in accordance with the correction signal.
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公开(公告)号：CA2489126A1
公开(公告)日：2005-06-08
申请号：CA2489126
申请日：2004-12-03
Applicant: HARRIS CORP
Inventor： LUU KY THOAI , DUELLO WAYNE DOUGLAS
Abstract: A pulse width modulator is presented herein and it includes a pulse width driver circuit that receives a time varying ramp signal that is modulated by a time varying analog input signal to produce a pulse width modulated drive signal comprised of turn-on pulses having widths that vary with variations in the magnitude of said input signal. A switch is turned on by each drive pulse for a time duration dependent upon the duration of each drive pulse and provides an output signal therefrom. A negative bias amplifier provides a negative bias signal that has pulsations that are synchronized with said drive pulses but of opposite phase. A combiner combines output signal with the negative bias signal to provide a combined output signal.
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Patent Agency Ranking
公开(公告)号：CA2529698A1
公开(公告)日：2005-01-06
申请号：CA2529698
申请日：2004-05-03
Applicant: HARRIS CORP
Inventor： MATTSSON ANDERS S , DUELLO WAYNE DOUGLAS , LUU KY THOAI , ABASCAL CARLOS
Abstract: A circuit for use in a broadcast transmitter for adaptively compensating for carrier signal distortions caused by amplitude modulating an RF carrier signal. The circuit includes a modulator/amplifier network that receives an RF carrier signal and modulates it by a received amplitude varying signal to obtain therefrom a modulated carrier signal which may exhibit distortions caused by the amplitude modulating of the RF carrier signal. A digitally adaptive corrector precorrects the amplitude varying signal prior to application thereof to the network to compensate for any modulated carrier signal distortions. This includes a digital processor that provides signal correction as a function of digital samples representing amplitude variation s of the modulated RF carrier signal.
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公开(公告)号：CA2644456C
公开(公告)日：2012-11-20
申请号：CA2644456
申请日：2007-04-05
Applicant: HARRIS CORP
Inventor： CABRERA GEORGE , DITTMER TIMOTHY WILFRED , DUELLO WAYNE DOUGLAS
Abstract: Systems and methods are provided for generating dual outputs in a digital exciter system. A first signal path (34) produces one of a frequency modulated audio signal, a digital information signal, and a signal comprising both frequency modulated audio and digital information A second signal path (36) produces one of a frequency modulated audio signal, a digital information signal, and a signal comprising both frequency modulated audio and digital information. A main exciter output provides one of the signal produced at the first signal path and the signal produced at the second signal path to an associated first destination (42). An auxiliary exciter output provides one of the signal produced at the first signal path and the signal produced at the auxiliary signal path to an associated second signal destination (44).
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公开(公告)号：CA2529698C
公开(公告)日：2010-06-29
申请号：CA2529698
申请日：2004-05-03
Applicant: HARRIS CORP
Inventor： DUELLO WAYNE DOUGLAS , LUU KY THOAI , ABASCAL CARLOS , MATTSSON ANDERS S
Abstract: A circuit for use in a broadcast transmitter for adaptively compensating for carrier signal distortions caused by amplitude modulating an RF carrier signal. The circuit includes a modulator/amplifier network that receives an RF carrier signal and modulates it by a received amplitude varying signal to obtain therefrom a modulated carrier signal which may exhibit distortions caused by the amplitude modulating of the RF carrier signal. A digitally adaptive corrector precorrects the amplitude varying signal prior to application thereof to the network to compensate for any modulated carrier signal distortions. This includes a digital processor that provides signal correction as a function of digital samples representing amplitude variations of the modulated RF carrier signal.
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公开(公告)号：MX2011000727A
公开(公告)日：2011-08-30
申请号：MX2011000727
申请日：2011-01-19
Applicant: HARRIS CORP
Inventor： DUELLO WAYNE DOUGLAS , HALOZAN SCOTT FREDERICK
IPC: H04L27/06
Abstract: Se presenta aquí un excitador digital para utilizarse en la radiodifusión de RF y en donde el excitador emplea la compensación de señal piloto. Este incluye un circuito digital de entrada para recibir datos digitales modulados a una velocidad de muestreo de entrada para radiodifusión de RF a una frecuencia RF deseada. La frecuencia piloto puede desplazarse desde una ubicación deseada en la banda de frecuencia debido a un error en la velocidad de muestreo de entrada. Un compensador digital determina si la frecuencia piloto se desplaza y proporciona una señal de corrección digital de acuerdo con esto. Un circuito de corrección digital corrige la frecuencia piloto de acuerdo con la señal de corrección.
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公开(公告)号：CA2728249A1
公开(公告)日：2011-07-22
申请号：CA2728249
申请日：2011-01-13
Applicant: HARRIS CORP
Inventor： DUELLO WAYNE DOUGLAS , HALOZAN SCOTT FREDERICK
Abstract: A digital exciter is presented herein for use in RF broadcasting and wherein the exciter employs pilot signal compensation. This includes an input digital circuit for receiving a modulated digital data at an input sample rate for RF broadcasting at a desired RF frequency. The pilot frequency may be displaced from a desired location at the frequency band because of an error in the input sample rate. A digital compensator determines whether the pilot frequency is displaced and provides a digital correction signal in accordance therewith. A digital correction circuit corrects the pilot frequency in accordance with the correction signal.
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