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公开(公告)号：AU2645401A
公开(公告)日：2001-09-20
申请号：AU2645401
申请日：2001-03-09
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KOLSRUD ARILD
Abstract: An analog-to-digital converter (100) (ADC) includes a dither signal generator (107) configured to add an analog dither signal (114) to the analog input signal (102) of the ADC prior to digitization (i.e., quantization). The amplitude of the either signal is selected based upon the power levels of one or more carriers present in the bandwidth for which the ADC is designed to operate. Addition of the dither signal to the input signal in the analog domain reduces quantization noise such as conversion spurs that result from non-linearities in the ADC transfer function.
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22.发明专利
公开(公告)号：CA2320533A1
公开(公告)日：2001-03-30
申请号：CA2320533
申请日：2000-09-25
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KOLSRUD ARILD , SOLONDZ MAX AARON , KAMINSKI WALTER JOSEPH
Abstract: A method and apparatus for properly receiving communication signals havi ng relatively high dynamic ranges. The communication signals are transmitted by equipment of a communication system. A receiver comprising a plurality of filters each of which represents a frequency band is used to receive the communication signals. Each frequency band is assigned a specific dynamic range. A controller coupled to the receiver determines the amplitude of the received signals. The controller is also coupled to a call processing module. The controller also determines whether the received signa l is in the proper frequency band; that is whether the amplitude of the received signal is within the assigned dynamic range of the frequency band within which the signal is transmitted. When the signal is not in the proper frequency band, the controller in conjunction with the call processing module transmit a message to the equipment that transmitted the received signal instructing the equipment as to which frequency band to transmit the signal.
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23.发明专利
公开(公告)号：BRPI0101297B1
公开(公告)日：2015-12-29
申请号：BR0101297
申请日：2001-04-03
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KOLSRUD ARILD , KAMINSKI WALTER JOSEPH
Abstract: "sistema receptor utilizando conversão de analógico para digital em radiofreqüência e método". um receptor recebe sinais analógicos em radiofreqüência (rf), e os sinais analógicos rf são convertidos em domínio digital. como tal, o receptor não requer estágio (s) de conversão de freqüência antes da conversão analógica para digital. por exemplo, o receptor pode compreender pelo menos uma antena (s) que recebe sinais analógicos de radiofreqüência (rf) em diferentes faixas de freqüência. os sinais analógicos rf são fornecidos a um conversor analógico para digital (a/d) único, e o conversor a/d converte os sinais analógicos rf em diferentes faixas de freqüência em sinais digitais dentro da largura de faixa nyquist. selecionando apropriadamente a taxa de amostragem do conversor a/d para os sinais analógicos rf, o conversor a/d pode produzir réplicas de diferentes faixas de freqüência dos sinais analógicos em porções de não-sobreposição da largura de faixa de nyquist.
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公开(公告)号：DE60207456D1
公开(公告)日：2005-12-29
申请号：DE60207456
申请日：2002-01-28
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GARCERAN JULIO ANTONIO , KAMINSKI WALTER JOSEPH , KOLSRUD ARILD
Abstract: A digital transmitter converts a digital signal into analog form with a digital to analog converter (DAC) and uses an analog signal image produced from the DAC to provide an analog signal at a transmission frequency and/or uses a projected analog signal image to produce analog signals for transmission. Rather than removing analog signal images with a low pass filter at the output of the DAC and/or using analog signal images and analog mixers for frequency conversion, the digital transmitter uses the analog signal images from the DAC to produce the analog signals at the desired frequency/frequencies. By setting and/or adjusting the conversion rate for the DAC and/or the digital signal frequency/frequencies, the analog signal images produced from the DAC can be positioned in the desired frequency band(s). For example, the digital transmitter can position the digital signals within non-overlapping portions of a conversion bandwidth defined as one-half the conversion rate for the DAC. When the digital signals are converted into analog form, the DAC produces analog signal images periodically repeated at multiples of one-half the conversion rate such that analog signal images are produced at the appropriate frequency band(s) for amplification and transmission.
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公开(公告)号：DE60100646D1
公开(公告)日：2003-10-02
申请号：DE60100646
申请日：2001-01-29
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KOLSRUD ARILD
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Patent Agency Ranking
公开(公告)号：DE60000503D1
公开(公告)日：2002-10-31
申请号：DE60000503
申请日：2000-11-06
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KAMINSKI WALTER JOSEPH , KOLSRUD ARILD
Abstract: A receiver (10) receives analog signals at radio frequency (RF), and the RF analog signals are converted into the digital domain. As such, the receiver does not require frequency conversion stage(s) prior to analog to digital conversion. For example, the receiver can comprise at least one antenna(s) (12) which receives radio frequency (RF) analog signals at different frequency bands. The analog RF signals are provided to a single analog to digital (A/D) converter (24) and the A/D converter converts the analog RF signals at the different frequency bands into digital signals within the Nyquist bandwidth. By properly selecting the sampling rate of the A/D converter for the RF analog signals, the A/D converter can produce replicas of the different frequency bands of the analog signals in non-overlapping portions of the Nyquist bandwidth.
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公开(公告)号：DE69937594D1
公开(公告)日：2008-01-03
申请号：DE69937594
申请日：1999-08-02
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KOLSRUD ARILD
Abstract: An inexpensive to produce and small profile programmable filter bank (10) with a high quality factor that applies an adjustable frequency response to an input signal to produce a filtered output signal includes an input (14) for receiving the input signal, an output (16) for transmitting the filtered output signal, and a set (12) of interconnected individually selectable filter elements, where each filter element provides a predefined fixed frequency response. A control unit (18), such as a digital state machine or a microprocessor, is connected to the filter elements and enables a user to select one or more filter elements in order to generate a desired overall frequency response, for application to the input signal, that is formed of the combination of the frequency responses of the selected filter element(s).
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公开(公告)号：CA2369227C
公开(公告)日：2005-03-29
申请号：CA2369227
申请日：2002-01-23
Applicant: LUCENT TECHNOLOGIES INC
Inventor： GARCERAN JULIO ANTONIO , KAMINSKI WALTER JOSEPH , KOLSRUD ARILD
Abstract: A digital transmitter converts a digital signal into analog form with a digital to analog converter (DAC) and uses an analog signal image produced from the DAC to provide an analog signal at a transmission frequency and/or uses a projected analog signal image to produce analog signals for transmission. Rather than removin g analog signal images with a low pass filter at the output of the DAC and/or using analog signal images and analog mixers for frequency conversion, the digital transmitter uses the analog signal images from the DAC to produce the analog signals at the desired frequency/frequencies. By setting and/or adjusting the conversion rate for the DAC and/or the digital signal frequency/frequencies; the analog sign al images produced from the DAC can be positioned in the desired frequency band(s). Fo r example, the digital transmitter can position the digital signals within non - overlapping portions of a conversion bandwidth defined as one-half the conversion rate f or the DAC. When the digital signals are converted into analog form, the DAC produc es analog signal images periodically repeated at multiples of one-half the conversion rate such that analog signal images are produced at the appropriate frequency band(s) for amplification and transmission.
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公开(公告)号：DE60000503T2
公开(公告)日：2003-06-26
申请号：DE60000503
申请日：2000-11-06
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KAMINSKI WALTER JOSEPH , KOLSRUD ARILD
Abstract: A receiver (10) receives analog signals at radio frequency (RF), and the RF analog signals are converted into the digital domain. As such, the receiver does not require frequency conversion stage(s) prior to analog to digital conversion. For example, the receiver can comprise at least one antenna(s) (12) which receives radio frequency (RF) analog signals at different frequency bands. The analog RF signals are provided to a single analog to digital (A/D) converter (24) and the A/D converter converts the analog RF signals at the different frequency bands into digital signals within the Nyquist bandwidth. By properly selecting the sampling rate of the A/D converter for the RF analog signals, the A/D converter can produce replicas of the different frequency bands of the analog signals in non-overlapping portions of the Nyquist bandwidth.
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公开(公告)号：CA2337714A1
公开(公告)日：2001-10-14
申请号：CA2337714
申请日：2001-02-22
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KAMINSKI WALTER JOSEPH , KOLSRUD ARILD
Abstract: A receiver receives analog signals at radio frequency (RF), and the RF anal og signals are converted into the digital domain. As such, the receiver does no t require frequency conversion stage(s) prior to analog to digital conversion. For example, the receiver can comprise at least one antenna(s) which receives radio frequency (RF) analog signals at different frequency bands. The analog RF signals are provided to a single analog to digital (A/D) converter, and the A/D converter converts the analog RF signals at the different frequency bands into digital signals within the Nyquist bandwidth. By properly selecting the sampling rate of the A/D converter for the RF analog signals, the A/D converter can produce replicas of the different frequency bands of the analog signals in non-overlapping portions of the Nyquist bandwidth.
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