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1.发明申请METHODS AND APPARATUS FOR TUNING PRE-SELECTION FILTERS IN RADIO RECEIVERS 审中-公开用于调谐无线电接收器中预选择滤波器的方法和装置
公开(公告)号：WO02084870A2
公开(公告)日：2002-10-24
申请号：PCT/EP0204154
申请日：2002-04-15
Applicant: ERICSSON TELEFON AB L M , ISBERG MARTIN , LINDQUIST BJOERN , LINDELL BO
Inventor： ISBERG MARTIN , LINDQUIST BJOERN , LINDELL BO
CPC classification number: H03L7/0805 , H03J3/08 , H03J3/28 , H03J7/04
Abstract: A tuning arrangement in a radio receiver includes a front-end circuit having a tunable band-pass filter that is capable of tunably selecting channels within at least one frequency band of an RF signal. A noise source coupled to an input of the tunable band-pass filter introduces a wide-band noise signal into the front-end circuit. A signal detector coupled to an output of the front-end circuit measures at least one signal power associated with a filtered noise signal derived from the wide-band noise signal. A tuning controller, coupled to the tunable band-pass filter by a tuning control signal, adjusts the tuning control signal in response to the at least one measured signal power for tuning the tunable band-pass filter to a desired filter response.
Abstract translation: 无线电接收机中的调谐装置包括具有可调谐带通滤波器的前端电路，其能够可调谐地选择RF信号的至少一个频带内的信道。 耦合到可调谐带通滤波器的输入端的噪声源将宽带噪声信号引入前端电路。 耦合到前端电路的输出的信号检测器测量与从宽带噪声信号导出的滤波噪声信号相关联的至少一个信号功率。 通过调谐控制信号耦合到可调谐带通滤波器的调谐控制器响应于至少一个测量信号功率来调整调谐控制信号，以将可调谐带通滤波器调谐到期望的滤波器响应。
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公开(公告)号：WO9832235A3
公开(公告)日：1998-09-11
申请号：PCT/SE9800034
申请日：1998-01-13
Applicant: ERICSSON TELEFON AB L M
Inventor： MANNERSTRAALE JACOB , ISBERG MARTIN , LINDQUIST BJOERN , CARLSSON TORSTEN , HAGBERG HANS , JAKOBSSON PETER , KUENKEL LARS PETER , GUSTAFSSON KJELL
CPC classification number: H04B1/0057 , H03D3/007 , H04B1/005 , H04B1/406
Abstract: The present invention relates to a receiver device comprising a receiver (104) adapted to receive radio signals in two frequency bands (FB1, FB2). The radio signals in one of the frequency bands (FB1) constitute communication signals for a radio system (AMPS, NMT) having a certain channel spacing, whereas the radio signals of the second frequency band (FB2) constitutes communication signals for a second radio system (PCS1900, DCS1800, GSM) having a second certain channel spacing. The receiver (104) comprises two inputs (108, 11) each intended for a radio system having different frequency bands and channel spacing. For radio signals occuring on one input (108), mixing is performed from the RF range directly to the baseband frequency range. For radio signals occuring on the second input (108) the mixing from the radio frequency range to the baseband frequency range is carried out through an intermediate frequency range. Further the receiver (104) comprises an output (112) intended to deliver baseband signals for both radio systems. The output (112) is connected to a baseband unit which is common to the radio systems. In the baseband unit, among other things, lowpass filtering, detection and neighbouring channel suppression are performed on the received radio signal that has been mixed down to the baseband frequency range.
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公开(公告)号：WO0209114A3
公开(公告)日：2002-07-18
申请号：PCT/EP0107674
申请日：2001-07-05
Applicant: ERICSSON TELEFON AB L M , ISBERG MARTIN
Inventor： ISBERG MARTIN
IPC: G11C5/00 , H01L23/544
CPC classification number: H01L23/544 , H01L2223/54433 , H01L2223/5444 , H01L2924/0002 , H01L2924/00
Abstract: A technique for identifying circuits within an electrical device is disclosed. In one embodiment, additional current sink paths are associated with one or more circuits within the electrical device and measurements of additional current drawn by the current sink paths can be used to identify the associated circuit. In an additional embodiment, a special mode of operation is implemented in the electrical device where the circuit to be identified outputs identity signals in response to control signals from a controller. In a further embodiment, a shift register is activated in the special mode of operation to serially output an identity word in response to the control signals from the controller.
Abstract translation: 公开了一种用于识别电气设备内的电路的技术。 在一个实施例中，附加电流吸收路径与电气设备内的一个或多个电路相关联，并且由电流吸收路径汲取的额外电流的测量结果可以用于识别关联电路。 在另外的实施例中，在电气设备中实施特殊操作模式，其中待识别电路响应于来自控制器的控制信号输出识别信号。 在另一实施例中，移位寄存器在特殊操作模式下被激活，以响应于来自控制器的控制信号而串行输出标识字。
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公开(公告)号：WO9901933A3
公开(公告)日：1999-04-01
申请号：PCT/SE9801219
申请日：1998-06-23
Applicant: ERICSSON TELEFON AB L M
Inventor： ISBERG MARTIN , LINDQUIST BJOERN , JAKOBSSON PETER , CELANDER JAN , GUSTAFSSON KJELL , KUENKEL LARS PETER , CARLSSON TORSTEN , MANNERSTAALE JACOB
Abstract: A multiple-mode receiver incorporating direct conversion (processing received signals using intermediate frequencies within the same frequency range as the received signal bandwidth) rather than superheterodyne circuitry, allowing receiver hardware components to be re-used rather than replicated for each band. Various embodiments are disclosed in which low pass filters, mixers, quadrature generators, oscillators, and amplifiers are re-used.
Abstract translation: 包括直接转换的多模式接收机（处理使用与接收信号带宽相同的频率范围内的中频）的接收信号，而不是超外差电路，允许重复使用接收机硬件组件而不是复制每个频带。 公开了各种实施例，其中重新使用低通滤波器，混频器，正交发生器，振荡器和放大器。
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公开(公告)号：DE60120978D1
公开(公告)日：2006-08-03
申请号：DE60120978
申请日：2001-07-05
Applicant: ERICSSON TELEFON AB L M
Inventor： ISBERG MARTIN
IPC: G11C5/00
Abstract: A technique for identifying circuits within an electrical device is disclosed. In one embodiment, additional current sink paths are associated with one or more circuits within the electrical device and measurements of additional current drawn by the current sink paths can be used to identify the associated circuit. In an additional embodiment, a special mode of operation is implemented in the electrical device where the circuit to be identified outputs identity signals in response to control signals from a controller. In a further embodiment, a shift register is activated in the special mode of operation to serially output an identity word in response to the control signals from the controller.
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Patent Agency Ranking
公开(公告)号：DE69432004T2
公开(公告)日：2003-12-11
申请号：DE69432004
申请日：1994-09-06
Applicant: ERICSSON TELEFON AB L M
Inventor： LINDQVIST BJOERN , ISBERG MARTIN
Abstract: A method and a device in a homodyne receiver including a local oscillator (LO) generating an oscillator signal at a frequency of fLO, a mixer (11), and reception means (12) receiving an input signal having a frequency of fRF, said oscillator signal and said input signal being supplied to said mixer (11). Said oscillator signal is supplied in a first processing unit (13) to produce a first output signal having a frequency of M*fLO, where M is an integer value. Said first output signal is supplied in a second processing unit (14) to produce a second output signal having a frequency of M*fLO/N=fLO, where N is an integer number and M NOTEQUAL N, and said mixer (11) and said second processing unit (14) are integrated to minimize leakage of signals being supplied to said mixer (11) from said second processing unit (14).
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公开(公告)号：AU2002316851A1
公开(公告)日：2002-10-28
申请号：AU2002316851
申请日：2002-04-15
Applicant: ERICSSON TELEFON AB L M
Inventor： LINDQUIST BJORN , LINDELL BO , ISBERG MARTIN
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公开(公告)号：BR9807287A
公开(公告)日：2000-03-21
申请号：BR9807287
申请日：1998-01-13
Applicant: ERICSSON TELEFON AB L M
Inventor： ISBERG MARTIN , LINDGUIST BJORN , CARLSSON TORSTEN , HAGBERG HANS , JAKOBSSON PETER , KUNKEL LARS PETER , GUSTAFSSON KJELL
Abstract: The present invention relates to a receiver device comprising a receiver (104) adapted to receive radio signals in two frequency bands (FB1, FB2). The radio signals in one of the frequency bands (FB1) constitute communication signals for a radio system (AMPS, NMT) having a certain channel spacing, whereas the radio signals of the second frequency band (FB2) constitutes communication signals for a second radio system (PCS1900, DCS1800, GSM) having a second certain channel spacing. The receiver (104) comprises two inputs (108, 11) each intended for a radio system having different frequency bands and channel spacing. For radio signals occurring on one input (108), mixing is performed from the RF range directly to the baseband frequency range. For radio signals occurring on the second input (108) the mixing from the radio frequency range to the baseband frequency range is carried out through an intermediate frequency range. Further the receiver (104) comprises an output (112) intended to deliver baseband signals for both radio systems. The output (112) is connected to a baseband unit which is common to the radio systems. In the baseband unit, among other things, lowpass filtering, detection and neighbouring channel suppression are performed on the received radio signal that has been mixed down to the baseband frequency range.
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公开(公告)号：CO4771170A1
公开(公告)日：1999-04-30
申请号：CO98002537
申请日：1998-01-21
Applicant: ERICSSON TELEFON AB L M
Inventor： ISBERG MARTIN , TORSTEN CARLSSON , JAKOBSSON PETER , KJELL GUSTAFSSON , BJORN LINDQUIST , HAGBERG HANS , LARS KUNKEL
Abstract: Un dispositivo receptor para señales de radio frecuencia(señales RF) en por lo menos una primera y una segunda banda de frecuencia (BF1, BF2,...), dichas señales en la primera banda de frecuencia siendo señales de comunicación para un cierto primer sistema de radio que tiene bajo espaciamiento de canal y las señales en la segunda banda de frecuencia siendo señales de comunicación para un cierto segundo sistema de radio que tiene un alto espaciamiento de canal, caracterizado en que comprende: a) un receptor que tiene por lo menos un primer y un segundo subenlace correspondientes a dichas primera y segunda banda de frecuencia, respectivamente, b) una unidad de adaptación para dirigir señales entrantes en la primera o segunda banda de frecuencia hacia el primer o segundo subenlace del receptor, dependiendo del sistema al cual dichas señales entrantes pertenecen, c) dicho primer subenlace del receptor comprendiendo: c1) medios de mezcla para transformación de las señales de RF en correspondientes señales de Fl y por lo menos un primer y un segundo medio de filtro cuyo ancho de banda corresponde a dicha primera banda de frecuencia (BF1); c2) un primer medio demodulador para demodulación de dichas señales de F1, que tiene un primer par de salidas para los componentes de cuadratura Ia, Iq de las señales de Fl desmoduladas en una primera banda base y d) dicho segundo subenlace comprendiendo un segundo medio demodulador para demodulación de dichas señales e RF, que tiene un segundo par de salidas para los componentes de cuadratura Id, Qd de las señales de RF desmoduladas en una segunda banda base, y e) un dispositivo para conectar dicho primer y segundo par de salidas a una salida común de un receptor.
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公开(公告)号：AU5785598A
公开(公告)日：1998-08-07
申请号：AU5785598
申请日：1998-01-13
Applicant: ERICSSON TELEFON AB L M
Inventor： MANNERSTRALE JACOB , ISBERG MARTIN , LINDQUIST BJORN , CARLSSON TORSTEN , HAGBERG HANS , JAKOBSSON PETER , KUNKEL LARS PETER , GUSTAFSSON KJELL
Abstract: The present invention relates to a receiver device comprising a receiver (104) adapted to receive radio signals in two frequency bands (FB1, FB2). The radio signals in one of the frequency bands (FB1) constitute communication signals for a radio system (AMPS, NMT) having a certain channel spacing, whereas the radio signals of the second frequency band (FB2) constitutes communication signals for a second radio system (PCS1900, DCS1800, GSM) having a second certain channel spacing. The receiver (104) comprises two inputs (108, 11) each intended for a radio system having different frequency bands and channel spacing. For radio signals occurring on one input (108), mixing is performed from the RF range directly to the baseband frequency range. For radio signals occurring on the second input (108) the mixing from the radio frequency range to the baseband frequency range is carried out through an intermediate frequency range. Further the receiver (104) comprises an output (112) intended to deliver baseband signals for both radio systems. The output (112) is connected to a baseband unit which is common to the radio systems. In the baseband unit, among other things, lowpass filtering, detection and neighbouring channel suppression are performed on the received radio signal that has been mixed down to the baseband frequency range.
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