公开(公告)号：EP1374387A4

公开(公告)日：2004-05-26

申请号：EP02721582

申请日：2002-03-25

Applicant: SKYWORKS SOLUTIONS INC

Inventor： DAMGAARD MORTEN ,  DOMINO WILLIAM J ,  MAGOON RAHUL ,  MOLNAR ALYOSHA C ,  ZACHAN JEFF

IPC: H03B1/00 ,  H03L5/00 ,  H03L7/087 ,  H03L7/099 ,  H03L7/113 ,  H03L7/187 ,  H04B1/40

CPC classification number: H03L7/099 ,  H03B2201/025 ,  H03B2201/0291 ,  H03J2200/10 ,  H03L5/00 ,  H03L7/087 ,  H03L7/113

Abstract: Systems for controlling the frequency of the output signal of a controllable oscillator (202) in a frequency synthesizer (200) are provided. One such system comprises a controllable oscillator (202) and a frequency control circuit (208). The controllable oscillator (202) is configured to generate an output signal that has a predefined frequency. The controllable oscillator (202) is also configured with a plurality of operational states that are controlled by the frequency control circuit (208). Each operational state of the controllable oscillator (202) defines a distinct frequency for the output signal of the controllable oscillator (202). The frequency control circuit (208) receives the output signal of the controllable oscillator (202) and determines the distinct frequency for the output signal that best approximates the predefined frequency. The frequency control circuit (208) may also provide a control signal to the controllable oscillator (202) that is configured to change the controllable oscillator (202) to the operational state corresponding to the distinct frequency that best approximates the predefined frequency.

Abstract translation: 提供了用于控制频率合成器中可控振荡器的输出信号的频率的系统。 一个这样的系统包括可控振荡器和频率控制电路。 可控振荡器被配置为产生具有预定频率的输出信号。 可控振荡器还配置有由频率控制电路控制的多个操作状态。 可控振荡器的每个操作状态为可控振荡器的输出信号定义了不同的频率。 频率控制电路接收可控振荡器的输出信号，并确定最接近预定频率的输出信号的不同频率。 频率控制电路还可以向可控振荡器提供控制信号，该控制信号被配置为将可控振荡器改变为对应于最接近于预定频率的不同频率的操作状态。

公开(公告)号：EP1902525A4

公开(公告)日：2012-04-25

申请号：EP06774617

申请日：2006-07-12

Applicant: SKYWORKS SOLUTIONS INC

Inventor： ROZENBLIT DMITRIY ,  SOWLATI TIRDAD ,  DAMGAARD MORTEN

IPC: H04B1/04 ,  H03C1/00 ,  H03G3/30 ,  H04L27/08 ,  H04L27/36 ,  H04L27/38

CPC classification number: H04L27/3809 ,  H03C1/00 ,  H03G3/3047 ,  H04L27/08 ,  H04L27/361 ,  H04W52/06 ,  H04W52/36

公开(公告)号：EP1327308A4

公开(公告)日：2009-05-27

申请号：EP01964161

申请日：2001-08-17

Applicant: SKYWORKS SOLUTIONS INC

Inventor： DAMGAARD MORTEN ,  ROZENBLIT DMITRIY ,  DOMINO WILLIAM J ,  CLARK RICKE W

IPC: H03F3/24 ,  H04B1/04 ,  H03F1/02 ,  H03F3/66 ,  H03G3/10 ,  H03G3/20 ,  H03G3/30 ,  H04B7/005

CPC classification number: H03G3/3042 ,  H03F1/02 ,  H03F2200/294 ,  H03F2200/372 ,  H04W52/52

Abstract: A system for a closed power control feedback loop (200) allows for the use of a non-linear amplifier for amplifying a phase modulated (PM) signal while introducing an inverse version of the desired amplitude modulation (AM) signal into the feedback loop using a variable gain element (Fig. 2, block 212). By introducing an inverse version of the desired (AM) portion of the signal into the power control feedback loop, the non-linear, and highly efficient, power amplifier may be used to amplify only the (PM) portion of the signal, while the (AM) portion is introduced by the power control feedback loop (200). In another aspect of the invention, an inverse version of the (AM) portion of the desired transmit signal is introduced into the power control feedback loop of an amplifier that is amplifying both a phase modulated signal and an amplitude modulated signal. By introducing an inverse version of the desired (AM) signal into the power control feedback loop, the power control feedback loop may not cancel the (AM) component present at the output of the power amplifier. In yet another aspect of the invention, the desired (AM) signal is injected into the feedback loop with the power control reference signal.

公开(公告)号：EP1807989A4

公开(公告)日：2009-03-18

申请号：EP05798335

申请日：2005-09-20

Applicant: SKYWORKS SOLUTIONS INC

Inventor： BEAMISH NORMAN J ,  DOMINO WILLIAM J ,  DAMGAARD MORTEN

IPC: H04L27/38 ,  H04B1/10 ,  H04B1/26

CPC classification number: H04L27/3863 ,  H04B1/1036 ,  H04B1/109 ,  H04B1/30

Abstract: Embodiments of a low intermediate frequency system and method are disclosed. In one embodiment, among others, a method for operating a receiver (300a) is disclosed that comprises receiving a radio frequency signal (272), downconverting the radio frequency signal to a downconverted signal (303) comprising an in-phase component (I) and quadrature component (Q), and estimating (310) a gain and phase imbalance between the in-phase component and the quadrature component.

Abstract translation: 公开了一种低中频系统和方法的实施例。 在一个实施例中，公开了一种用于操作接收机的方法，其包括：接收射频信号，将射频信号下变频到包括同相分量和正交分量的下变频信号，以及估计两者之间的增益和相位不平衡 同相分量和正交分量。

公开(公告)号：EP1374427A4

公开(公告)日：2005-12-28

申请号：EP02721580

申请日：2002-03-26

Applicant: SKYWORKS SOLUTIONS INC

Inventor： MOLNAR ALYOSHA C ,  MAGOON RAHUL ,  DOMINO WILLIAM J ,  ZHANG ANDREW ,  DAMGAARD MORTEN

IPC: H03D7/16 ,  H03L7/185 ,  H03L7/197 ,  H04B1/40

CPC classification number: H03D7/163 ,  H03L7/185 ,  H03L7/1974 ,  H04B1/403

Abstract: A system for transmitting and receiving signals, the system includes the use of a frequency plan table, and a system of creating the frequency plan table. The frequency plan table relates carrier frequency channels to the operation of a synthesizer and a plurality of programmable frequency dividers in a locked loop. In a transmitter, a first programmable frequency divider (708) accepts a reference signal and produces a comparison signal. A mixer (702) accepts the reference signal and a transmission signal and produces a loop signal. A second programmable frequency divider (710) accepts the loop signal and produces a loop signal having a divided intermediate frequency signal. A phase detector (406) compares the comparison signal and the loop signal having a divided intermediate frequency and produces an output that controls a variable controlled oscillator (712). The variable controlled oscillator produces a modulated transmission signal.