Title:
SPLIT VARACTOR ARRAY WITH IMPROVED MATCHING AND VARACTOR SWITCHING SCHEME
Document Type and Number:
WIPO Patent Application WO/2013/060854
Kind Code:
A3
Abstract:
One embodiment of the present invention relates to a digital controlled oscillator. The oscillator includes an oscillator circuit, a varactor array, and a control circuit. The oscillator circuit receives a control word and a signal and generates an oscillator clock signal from the signal at a frequency selected by the control word. The varactor array has a first array of varactor cells having incremental capacitance values and a second array of varactor cells having equal capacitance values. The split varactor array provides a capacitance value. A control circuit is coupled to the oscillator circuit and controls the split varactor array according to the control word. The control circuit sets varactor cells of the split varactor array on or off.
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Inventors:
THALLER EDWIN (AT)
NONIS ROBERTO (AT)
NONIS ROBERTO (AT)
Application Number:
PCT/EP2012/071276
Publication Date:
August 29, 2013
Filing Date:
October 26, 2012
Export Citation:
Assignee:
INTEL MOBILE COMM GMBH (DE)
THALLER EDWIN (AT)
NONIS ROBERTO (AT)
THALLER EDWIN (AT)
NONIS ROBERTO (AT)
International Classes:
H03B5/36; H03L7/099
Foreign References:
| US20090085681A1 | 2009-04-02 | |||
| US20020033737A1 | 2002-03-21 | |||
| US20100001784A1 | 2010-01-07 | |||
| US20030141936A1 | 2003-07-31 |
Attorney, Agent or Firm:
ZIMMERMANN, Tankred et al. (Pullach, DE)
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