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公开(公告)号：JP2002026758A
公开(公告)日：2002-01-25
申请号：JP2001114703
申请日：2001-04-13
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KAMINSKI WALTER JOSEPH , KOLSRUD ARILD
Abstract: PROBLEM TO BE SOLVED: To provide an analog/digital converter that can reproduce an analog signal with a different frequency band in a non-superimposed part of the Nyquist bandwidth. SOLUTION: A receiver receives an analog signal with a radio frequency(RF) and converts the RF analog signal into a digital domain. Thus, the receiver needs no frequency conversion stage prior to the analog/digital conversion. For example, the receiver is provided with at least one antenna, that receives a radio frequency(RF) analog signal at a different frequency band. The analog RF signal is given to a single analog/digital converter and the analog/digital converter converts the analog RF signal with the different frequency band into a digital signal within the Nyquist bandwidth. Properly selecting a sampling speed of the analog/digital converter for the RF analog signal enables the analog/digital converter to generate a copy of the analog signal, having a different frequency band in a non-superimposed part of the Nyquist bandwidth.
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公开(公告)号：JP2001157271A
公开(公告)日：2001-06-08
申请号：JP2000298176
申请日：2000-09-29
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KAMINSKI JOSEPH WALTER , KOLSRUD ARILD , SOLONDZ MAX AARON
Abstract: PROBLEM TO BE SOLVED: To provide a method and a device that can properly receive a multiplex carrier signal with a relatively high dynamic range. SOLUTION: A receiver 632 consists of filters 606, 608, 610 and each filter corresponding to one frequency band is used to receive a communication signal. A controller 624 connected to the receiver decides amplitude of a received signal. The controller is also connected to a call processing module 628. Furthermore, the controller decides whether or not the received signal is within a proper frequency band. Then the controller decides whether or not the amplitude of the received signal is within a dynamic range assigned to a frequency band in the transmitted signal. When the signal is not within a proper frequency band, the controller connected to the call processing module transmits a message to a device that has transmitted the signal to instruct the device on the frequency band of the signal to be sent.
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公开(公告)号：JP2000091836A
公开(公告)日：2000-03-31
申请号：JP23908399
申请日：1999-08-26
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KAMINSKI JOSEPH WALTER , KOLSRUD ARILD
Abstract: PROBLEM TO BE SOLVED: To obtain a compact frequency selection delay device for satisfactorily functioning with frequencies in a wide range including micro-wave and milli- meter wave frequencies. SOLUTION: A wide band frequency selection delay device is provided in a compact constitution. A source antenna transmits multi-frequency signals to the direction of several frequency selection faces 38, 40, and 42. Each frequency selection face 38, 40, and 42 transmits the frequency components of a signal to a receiving antenna 46. The receiving antenna 46 combines the transferred signal components, and generates a compressed signal or an expanded signal according to a method in which the frequency selection device is arranged.
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公开(公告)号：DE69937594T2
公开(公告)日：2008-10-23
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：DE60207456T2
公开(公告)日：2006-08-03
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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Patent Agency Ranking
公开(公告)号：CA2369227A1
公开(公告)日：2002-08-16
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：BR0101298A
公开(公告)日：2001-11-13
申请号：BR0101298
申请日：2001-04-03
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KOLSRUD ARILD , KAMINSKI WALTER JOSEPH
Abstract: A receiver (10) provides received analog signals to a plurality of channel branches (16a-x), and on at least one of the channel branches, the frequency of the received analog signals is adjusted independent of the relative positions of the corresponding analog signals in the radio frequency (RF) spectrum. The analog signals on the channel branches are then combined, and the combined analog signals are converted into the digital domain. For example, the receiver comprises at least one antenna(s) (12) which receives radio frequency (RF) analog signals. A channel branch arranger receives the analog RF signals from the antenna(s) and provides the RF analog signals to a plurality of channel branches (16a-x). A frequency conversion arrangement comprising at least one frequency converter (20) on at least a respective one of the channel branches adjusts the frequency band of the analog RF signals on the respective channel branch independent of the relative positions of the corresponding analog signals in the RF spectrum of the different channel branches. The analog signals on the channel branches are combined (in 22), and single analog to digital converter (24) converts the combined analog signals into digital signals. In converting the composite analog signals into the digital domain, the frequency bands of the analog signals are positioned in a plurality of Nyquist zone channels in the digital domain. By properly selecting the frequency bands for the analog signals on the channel branches and the sampling rate for the A/D converter, the available bandwidth for the A/D converter can be more efficiently used, and/or time coherence and/or phase coherence can be provided.
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公开(公告)号：DE60100646T2
公开(公告)日：2004-06-17
申请号：DE60100646
申请日：2001-01-29
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KOLSRUD ARILD
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公开(公告)号：CA2337601C
公开(公告)日：2004-05-25
申请号：CA2337601
申请日：2001-02-19
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KOLSRUD ARILD , ZAPPALA CHRISTOPHER F
Abstract: The high-power selective signal attenuator includes an attenuator attenuating analog main signals, and a first analog-to- digital converter converting output of the attenuator to digital. A digital-to-analog converter reconverts the digital output of the first ADC to analog, and a cancellor receives the main signals and the analog output from the DAC. The cancellor cancels the analog output of the DAC from the main signals to substantially eliminate high- power signals. A second ADC receives the output of the cancellor and generates a digital output. Based on the digital output, control circuitry dynamically controls the attenuation of the attenuator to prevent saturation of the second ADC and to improve information throughput.
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公开(公告)号：BR0101070A
公开(公告)日：2001-11-06
申请号：BR0101070
申请日：2001-03-14
Applicant: LUCENT TECHNOLOGIES INC
Inventor： KOLSRUD ARILD , ZAPPALA CHRISTOPHER F
Abstract: A high-power selective signal attenuator (2) includes an attenuator (12) attenuating analog main signals, and a first analog-todigital converter (16) converting output of the attenuator to digital. A digital-to-analog converter (18) reconverts the digital output of the first ADC to analog, and a cancellor (24) receives the main signals and the analog output from the DAC. The cancellor (24) cancels the analog output of the DAC from the main signals to substantially eliminate highpower signals. A second ADC (28) receives the output of the cancellor and generates a digital output. Based on the digital output, control circuitry (32) dynamically controls the attenuation of the attenuator (12) to prevent saturation of the second ADC and to improve information throughput.
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