公开(公告)号：EP1570569B1

公开(公告)日：2010-06-16

申请号：EP02808204.8

申请日：2002-11-29

申请人： Infineon Technologies AG

发明人： WU, Hai, Jie ,  SUN, Jing

IPC分类号： H03B5/20 ,  H03K3/0231

CPC分类号： H03K3/011 ,  H03B5/20 ,  H03K3/0322

公开(公告)号：EP1570569A1

公开(公告)日：2005-09-07

申请号：EP02808204.8

申请日：2002-11-29

申请人： Infineon Technologies AG

发明人： WU, Hai, Jie ,  SUN, Jing

IPC分类号： H03B5/20 ,  H03K3/0231

CPC分类号： H03K3/011 ,  H03B5/20 ,  H03K3/0322

摘要： The present invention provides a current controlled oscillator comprising a first section providing a first differential output and a second section providing a second differential output. A loading structure comprised of resistive and reactive elements electrically connects the first differential output with the second differential output. The resistive and reactive elements have values chosen such that the resistive elements substantially extend the linear operating frequency range of the current controlled oscillator. Transistors of the loading structure have which are tied to a power supply rejection ratio compensation section for compensating for variations in power supply voltage.

公开(公告)号：EP1020023A4

公开(公告)日：2004-03-17

申请号：EP99937695

申请日：1999-07-31

申请人： VITESSE SEMICONDUCTOR CORP

发明人： CAI YIJUN

IPC分类号： H03B5/00 ,  H03B5/04 ,  H03B5/12 ,  H03B5/20 ,  H03B5/24 ,  H03B28/00 ,  H03H11/18 ,  H03K3/0231

CPC分类号： H03B5/24 ,  H03B5/1209 ,  H03B5/1221 ,  H03B5/1228 ,  H03K2005/00052

摘要： A phase interpolation voltage controlled oscillator includes a plurality of n phase shifting cells (A) and n-1 levels of summing cells (S). The phase shifting cells (A) receive a common input signal and each shifts the input signal a different amount than the other phase shifting cells (A). A summing cell (S) of the first level receives and sums the outputs of at least two phase shifting cells (A), and each remaining level of summing cells receives outputs of a previous level of summing cells (S). The last level contains a single summing cell (S) which produces an output signal that is fed back as the common input signal of the phase shifting cells (A).

公开(公告)号：EP0821473B1

公开(公告)日：2001-10-24

申请号：EP97112323.7

申请日：1997-07-18

申请人： Nortel Networks Limited

发明人： Brown, Anthony Kevin Dale

IPC分类号： H03F1/32 ,  H03B5/20

CPC分类号： H03B5/20 ,  H03F1/3211

公开(公告)号：EP1072088A1

公开(公告)日：2001-01-31

申请号：EP00912436.3

申请日：2000-01-24

申请人： Koninklijke Philips Electronics N.V.

发明人： ALI, Danish

IPC分类号： H03B27/00 ,  H03B5/20 ,  H03L7/00 ,  H03L5/00

CPC分类号： H03B27/00 ,  H03B5/20 ,  H04B1/04

摘要： A transmitter having an integratable quadrature oscillator network for simultaneously producing a sine wave and a cosine wave. The digital direction of rotation (whether the frequency is positive or negative) input is slow rate limited (R, C3) and fed into a low gm transconductor (MOS1, MOS2) to softly switch between two pairs of transconductor amplifiers (TR1, TR2 and TR3, TR4) which together with two capacitors (C1, C2) form quadrature oscillators of opposite direction of rotation. By softly switching the quadrature oscillators out-of-band emissions are minimised in a subsequent mixing with a carrier signal to generate a frequency modulated signal.

公开(公告)号：EP0705497B1

公开(公告)日：2001-01-24

申请号：EP94914298.8

申请日：1994-05-04

申请人： Nortel Networks Limited

发明人： BROWN, Anthony, Kevin, Dale

IPC分类号： H03B5/20 ,  H03H11/42 ,  H03G1/00

CPC分类号： H03H11/42 ,  H03B5/20 ,  H03G1/0023

公开(公告)号：EP0988698A1

公开(公告)日：2000-03-29

申请号：EP99910056.3

申请日：1999-03-25

申请人： Nortel Networks Corporation

发明人： BROWN, Anthony, Kevin, Dale

IPC分类号： H03H11/50 ,  H03B5/20

CPC分类号： H03B5/20 ,  H03H11/50

摘要： A gyrator includes shunt or feedback nodal capacitors and shunt lossy inductors without shunt load resistors. The effective nodal capacitance is reduced by the introduction of the shunt lossy inductors. The inductors act to discriminate against injected power supply noise, resulting in improved oscillator phase noise. The inductors produce less dc voltage drop than the resistive load, so that larger linear oscillation is obtained with improved oscillator phase noise. The gyrator includes an automatic gain control circuit and a tuning control circuit which are separate from each other and fast and slow acting control loops which are augmented with each other.

公开(公告)号：EP0685928A1

公开(公告)日：1995-12-06

申请号：EP94201520.7

申请日：1994-05-30

申请人： ALCATEL BELL Naamloze Vennootschap

发明人： Sevenhans, Joannes Mathilda Josephus ,  Sallaerts, Daniel

IPC分类号： H03B1/00 ,  H03B5/20

CPC分类号： H03B5/24 ,  H03B2200/0058 ,  H03B2200/0086

摘要： An oscillator arrangement is described which includes the series coupling of first (OTA1,C1) and second (OTA2,C2) integrator circuit, an output signal provided at an output of the second integrator circuit (OTA2,C2) being negatively fed back to an input of the first integrator circuit (OTA1,C1). The input impedance of the integrator circuit (OTA1,C1/OTA2,C2) have a negative value, whereby losses due to finite output resistances of the integrator circuit are compensated thereby providing a high quality factor.

摘要翻译： 描述了包括第一（OTA1，C1）和第二（OTA2，C2）积分器电路的串联耦合的振荡器布置，在第二积分器电路（OTA2，C2）的输出处提供的输出信号被负反馈回到 第一积分器电路（OTA1，C1）的输入。 积分器电路（OTA1，C1 / OTA2，C2）的输入阻抗具有负值，由此积分器电路的有限输出电阻的损耗被补偿，从而提供高品质因数。

公开(公告)号：EP0484031A3

公开(公告)日：1992-12-02

申请号：EP91309742.4

申请日：1991-10-22

申请人： AT&T Corp.

发明人： Khoury, John Michael

IPC分类号： H03F3/45 ,  H03B5/20

CPC分类号： H03B5/20 ,  H03B27/00 ,  H03B2200/0058 ,  H03B2200/0062 ,  H03B2200/0078 ,  H03B2200/0092 ,  H03B2201/02

摘要： A clamped linear transconductance amplifier path, consisting essentially of a current clamp (M23) merged in a linear transconductance amplifier (M23, M21,M22) path, is used in a triple-input, single-output transconductor (200). In a balanced transconductor in CMOS technology, this clamped linear transconductance amplifier path is formed by a p-channel MOS transistor (M23) separately connected in series with each of a matched pair of p-channel MOS transistors (M21, M22). The clamped linear transconductance amplifier path, together with two other transconductance paths (M15-M20; M9-M14), can be interconnected to form the input side of the triple-input, single-output transconductor (200). By summing and integrating the outputs of the input side of the triple-input transconductor (200), the output (VOUT,P and VOUT,N) of the output side of the transconductor can be formed. By feeding back this output to the input side of the transconductor (200), an oscillator can obtained.

公开(公告)号：EP0484031A2

公开(公告)日：1992-05-06

申请号：EP91309742.4

申请日：1991-10-22

申请人： AT&T Corp.

发明人： Khoury, John Michael

IPC分类号： H03F3/45 ,  H03B5/20

CPC分类号： H03B5/20 ,  H03B27/00 ,  H03B2200/0058 ,  H03B2200/0062 ,  H03B2200/0078 ,  H03B2200/0092 ,  H03B2201/02

摘要： A clamped linear transconductance amplifier path, consisting essentially of a current clamp (M23) merged in a linear transconductance amplifier (M23, M21,M22) path, is used in a triple-input, single-output transconductor (200). In a balanced transconductor in CMOS technology, this clamped linear transconductance amplifier path is formed by a p-channel MOS transistor (M23) separately connected in series with each of a matched pair of p-channel MOS transistors (M21, M22). The clamped linear transconductance amplifier path, together with two other transconductance paths (M15-M20; M9-M14), can be interconnected to form the input side of the triple-input, single-output transconductor (200). By summing and integrating the outputs of the input side of the triple-input transconductor (200), the output (VOUT,P and VOUT,N) of the output side of the transconductor can be formed. By feeding back this output to the input side of the transconductor (200), an oscillator can obtained.

摘要翻译： 夹紧线性跨导放大器路径，基本上由电流钳（M23）的以线性跨导放大器（M23，M21，M22）的路径，是在三输入，三输出跨导器（200）使用合并。 在CMOS技术中一个平衡跨，此夹紧线性跨导放大器路径由一个p沟道MOS晶体管（M23）分别串联连接各一对匹配的p沟道MOS晶体管（M21，M22）的形成。 被夹紧的线性跨导放大器路径，与其他在一起的两个跨导路径（M15-M20; M9-M14），可以相互连接以形成三输入的输入侧，三输出跨导器（200）。 通过求和与INTEGRA婷三重输入跨（200）的输入侧的输出，跨导器的输出侧的输出（VOUT，P和V OUT，N）可以被形成。 通过反馈该输出到振荡器的跨导器（200）的输入侧可以得到。