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公开(公告)号：EP1317796A4
公开(公告)日：2006-08-02
申请号：EP01957635
申请日：2001-08-14
CPC分类号： H03B5/1841 , H03B5/1882 , H03B2200/0078 , H03B2201/02 , H03C3/40 , H03L7/081 , H03L7/099
摘要： An oscillator (100, 200) and a method of adjusting the frequency of oscillation of the oscillator (100, 200) are disclosed for generating a signal with an adjustable frequency in a frequency range from 1GHz to 200GHz. The oscillator (100, 200) includes a loop circuit. The loop circuit has an amplifier (101), a delay element or filter (103), a phase shifter (102), a device for adjusting the phase shifter (102), and a coupler (104) to provide an output signal. The adjusting device is coupled to the phase shifter (102).
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公开(公告)号：EP0985266B1
公开(公告)日：2001-12-19
申请号：EP99912935.6
申请日：1999-03-24
发明人： BRUWER, Frederick , SMIT, Willem
IPC分类号： H03B5/20
CPC分类号： H03B5/20 , H03B2201/02 , H03B2201/025 , H03B2201/0266 , H03J2200/10 , Y10T307/826
摘要： A transmitter system comprises an oscillator and having an adjustable monolithic capacitor circuit used for frequency stabilization. The oscillator signal is modulated and transmitted. A data generating chip is coupled to the transmitter. The data generating chip is used for adjusting and controlling the transmitter oscillator frequency signal. The adjustable capacitor circuit is located internal to the data generating chip and is coupled to a ground pin and one of a plurality of function pins on the data generating chip. The adjustable capacitor circuit is used for adjusting and setting the centerpoint of the transmitter oscillator frequency signal.
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公开(公告)号：EP0985266A1
公开(公告)日：2000-03-15
申请号：EP99912935.6
申请日：1999-03-24
发明人： BRUWER, Frederick , SMIT, Willem
IPC分类号： H03B5/20
CPC分类号： H03B5/20 , H03B2201/02 , H03B2201/025 , H03B2201/0266 , H03J2200/10 , Y10T307/826
摘要： A transmitter system comprises an oscillator and having an adjustable monolithic capacitor circuit used for frequency stabilization. The oscillator signal is modulated and transmitted. A data generating chip is coupled to the transmitter. The data generating chip is used for adjusting and controlling the transmitter oscillator frequency signal. The adjustable capacitor circuit is located internal to the data generating chip and is coupled to a ground pin and one of a plurality of function pins on the data generating chip. The adjustable capacitor circuit is used for adjusting and setting the centerpoint of the transmitter oscillator frequency signal.
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公开(公告)号：EP0940908A2
公开(公告)日：1999-09-08
申请号：EP99100957.2
申请日：1999-01-20
IPC分类号： H03B5/20
CPC分类号： H03B5/24 , H03B2201/02
摘要： According to the present invention, while maintaining a constant ratio between a bias current supplied to field effect transistors of transconductors 4, 5 and a bias current supplied to field effect transistors of amplifier 3, by controlling oscillation frequency through adjustment of values of bias currents, frequency control can be carried out in much wider range.
摘要翻译： 根据本发明，通过提供给跨导体4,5的场效应晶体管的偏置电流和提供给放大器3的场效应晶体管的偏置电流保持恒定的比率，通过调整偏置电流的值来控制振荡频率， 频率控制可以在更宽的范围内进行。
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公开(公告)号：EP0632938B1
公开(公告)日：1997-10-22
申请号：EP92924520.7
申请日：1992-12-09
CPC分类号： H03B27/00
摘要： A resonant circuit comprises first (600) and second (600') amplifiers. An input of the second amplifier is coupled to an output of the first amplifier, and an output of the second amplifier is cross-coupled to an input of the first amplifier. The first amplifier has a first gain and a 90 degree phase shift between its input and its output at a resonant frequency of the resonant circuit. The second amplifier has a second gain and a 90 degree phase shift between its input and its output at the resonant frequency of the resonant circuit. The second gain is different from the first gain. The resonant circuit can have a first port (Ap, An) and second ports (Bp, Bn) coupled to an input and an output respectively of one of the first and second amplifiers. Because the gains of the first and second amplifiers differ, the gain from the first port to the second port of the resonant circuit will differ from the gain from the second port to the first port. This gain difference is useful for enhancing the quality factor Q of multiple resonator circuits constructed from such resonant circuits.
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公开(公告)号：EP0578020A2
公开(公告)日：1994-01-12
申请号：EP93109638.2
申请日：1993-06-16
CPC分类号： H04R25/505 , H03K3/0231 , H03K4/066
摘要： Ein Hörgerät soll mit einem integrierten Schaltkreis (8), der wenigstens einen Oszillator (7) aufweist, dessen Frequenz kapazitiv wählbar ist, so ausgebildet werden, daß die Frequenz des integrierten Oszillators (7) digital wählbar ist. Dazu sind in dem integrierten Schaltkreis (8) mindestens zwei kapazitiv wirkende Komponenten als Teilkondensatoren (C1 bis C6) integriert, mit denen die Frequenz des Oszillators wählbar ist. Dabei ist wenigstens einer der Teilkondensatoren (C1 bis C6) über ein integriertes Schaltmittel (S1 bis S6) an dem Oszillator (7) zu- oder abschaltbar ausgebildet.
摘要翻译： 助听器将由集成电路（8）构成，该集成电路（8）可以以集成振荡器（7）的频率被数字地选择的方式呈现在一个振荡器（7）上，其频率可以被容量地选择 。 为此，至少两个电容作用部件被集成在集成电路（8）中，作为部分电容器（C1至C6），借此可以选择振荡器的频率。 在这种布置中，部分电容器（C1至C6）中的至少一个可构造地连接到振荡器（7）或经由集成开关装置（S1至S6）断开。
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公开(公告)号：EP0453035A1
公开(公告)日：1991-10-23
申请号：EP91200879.4
申请日：1991-04-15
IPC分类号： H03B5/20
CPC分类号： H03B5/20
摘要： Controllable oscillator circuit comprising a regenerative loop which incorporates a cascade circuit of first and second sections (TC1,TC3,TC4) each having a controllable gain and a phase shift which is 90 o at the oscillation frequency, and an amplitude detection (AD) arrangement which is coupled between an output and a control input of at least one of the two sections. To obtain a comparatively large tuning control range and an effective amplitude stabilisation, the two sections are mutually substantially equal and the first and second sections comprise first (TC1) and second (TC2) controllable transconductance circuits, respectively, outputs of which are coupled to third (TC3) and fourth (TC4) controllable transconductance circuits which are positively fed back from the output to the input, and which are coupled to first and second parallel RC filters (R1,C1;R2,C2) and to inputs of the second and first controllable transconductance circuits, respectively, control inputs of the first and second transconductance circuits being coupled to a tuning control (IT) and the output of at least one of the two first and second transconductance circuits being coupled to control inputs of the third and fourth transconductance circuits via the amplitude detection arrangement.
摘要翻译： 可控振荡器电路包括一个再生回路，其包含第一和第二部分（TC1，TC3，TC4）的级联电路，每个级联电路具有可调增益，在振荡频率下具有90°的相移，以及振幅检测（AD ）布置，其耦合在两个部分中的至少一个的输出和控制输入之间。 为了获得相对较大的调谐控制范围和有效振幅稳定，两个部分相互基本相等，并且第一和第二部分分别包括第一（TC1）和第二（TC2）可控跨导电路，其输出端分别耦合到第三 （TC3）和第四（TC4）可控跨导电路，其从输出端正向反馈到输入端，并且耦合到第一和第二并联RC滤波器（R1，C1; R2，C2），并耦合到第二和 第一可控跨导电路分别与第一和第二跨导电路的控制输入耦合到调谐控制（IT），并且两个第一和第二跨导电路中的至少一个的输出耦合到第三和第四跨导电路的控制输入 跨导电路经由振幅检测装置。
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公开(公告)号：EP0228941B1
公开(公告)日：1990-04-25
申请号：EP86402688.5
申请日：1986-12-03
IPC分类号： H03B5/20
CPC分类号： H03B5/20 , H03B2200/005 , H03B2200/0092
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40.发明公开
公开(公告)号：EP0228941A1
公开(公告)日：1987-07-15
申请号：EP86402688.5
申请日：1986-12-03
IPC分类号： H03B5/20
CPC分类号： H03B5/20 , H03B2200/005 , H03B2200/0092
摘要： L'invention concerne un générateur sinusoïdal à très faible distorsion.
Pour réaliser un générateur sinusoïdal à très faible distorsion on utilise deux filtres (12,14) sélectifs de caractéristiques identiques réalisés sur une même puce de circuit intégré. L'un des filtres (12) est bouclé en oscillateur à fréquence Fo et l'autre (14) sert de filtre dont le pic est justement à même fréquence Fo. L'application est particulièrement intéressante avec des filtres à capacités commutées pour lesquels on peut facilement régler la fréquence centrale Fo.摘要翻译： 1.一种正弦振荡器，其特征在于，其在单个集成电路芯片上包括在中心频率Fo具有传输最大值并包括输入（E1）和输出（S1））的第一选择性带通滤波器（F1） 反馈回路（A1），其将输入和输出连接以形成频率为Fo的振荡器;第二选择性带通滤波器（F2），其与第一选择带通滤波器（F2）相同，并且包括直接连接或通过 衰减器（ATT）的介质到第一滤波器的输出，以及构成正弦振荡器的输出的输出（S2）。
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