Source: http://www.google.com/patents/US7809339?dq=3140553
Timestamp: 2014-03-11 11:13:18
Document Index: 136974055

Matched Legal Cases: ['Application No. 60', 'art 11', 'art 11', 'art 11', 'art 11', 'art: 11', 'art: 11', 'art 11', 'art 11', 'art 11', 'art 11', 'art 16', 'art 16', 'art 16', 'art 16']

Patent US7809339 - Voltage regulator for high performance RF systems - Google PatentsSearch Images Maps Play YouTube News Gmail Drive More »Sign inAdvanced Patent SearchPatentsA voltage regulator comprises a master regulator circuit that receives a reference signal and that generates a feedback signal and a master bias signal. The master bias signal is based on the reference signal and the feedback signal. N slave regulator circuits receive the master bias signal from the...http://www.google.com/patents/US7809339?utm_source=gb-gplus-sharePatent US7809339 - Voltage regulator for high performance RF systemsAdvanced Patent SearchPublication numberUS7809339 B1Publication typeGrantApplication numberUS 11/715,027Publication dateOct 5, 2010Filing dateMar 7, 2007Priority dateMay 15, 2003Also published asUS7190936, US8331884, US8639201Publication number11715027, 715027, US 7809339 B1, US 7809339B1, US-B1-7809339, US7809339 B1, US7809339B1InventorsSwee-Ann Teo, Lawrence Tse, Yonghua SongOriginal AssigneeMarvell International Ltd.Export CitationBiBTeX, EndNote, RefManPatent Citations (17), Non-Patent Citations (14), Referenced by (2), Classifications (7) External Links: USPTO, USPTO Assignment, EspacenetVoltage regulator for high performance RF systemsUS 7809339 B1Abstract A voltage regulator comprises a master regulator circuit that receives a reference signal and that generates a feedback signal and a master bias signal. The master bias signal is based on the reference signal and the feedback signal. N slave regulator circuits receive the master bias signal from the master regulator circuit and output N regulated output signals to N circuits, respectively, where N is an integer greater than one.
CROSS-REFERENCE TO RELATED APPLICATIONS This application is a continuation of U.S. patent application Ser. No. 10/747,522 filed on Dec. 29, 2003, which application claims the benefit of U.S. Provisional Application No. 60/470,620, filed on May 15, 2003. The disclosures of the above applications are incorporated herein by reference.
FIELD OF THE INVENTION The present invention relates to voltage regulators, and more particularly to voltage regulators for high performance radio frequency (RF) systems.
BACKGROUND OF THE INVENTION Circuits in high performance radio frequency (RF) systems such as but not limited to wireless communications devices often require a regulated supply voltage. Voltage regulators are typically used to regulate the supply voltage. In some RF systems, more than one voltage regulator may be required. In other applications with spatial limitations, multiple circuits may share the same voltage regulator. For example, a voltage-controlled oscillator (VCO) circuit and a mixer circuit may share the same regulated supply. In this configuration, noise from the mixer circuit often appears at the output of the VCO circuit and vice-versa.
SUMMARY OF THE INVENTION A voltage regulator according to the present invention includes a master regulator circuit that receives a reference signal, that generates a master bias signal and that includes a transistor having a first gain. A first slave regulator circuit includes a first transistor having a second gain that is substantially equal to unity gain, a control terminal that receives the master bias signal from the master regulator circuit, a first terminal and a second terminal that outputs a first regulated output signal. A second slave regulator circuit includes a second transistor having a third gain that is substantially equal to unity gain, a control terminal that receives the master bias signal from the master regulator circuit, a first terminal, and a second terminal that outputs a second regulated output signal.
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IEEE Standard for Local and metropolitan area networks; Part 16: Air Interface for Fixed Broadband Wireless Access Systems-Amendment 2: Medium Access Control Modifications and Additional Physical Layer Specifications for 2-11 GHz; Apr. 1, 2003; pp. 1-292.14IEEE Std. 802.16a; IEEE Standard for Local and metropolitan area networks; Part 16: Air Interface for Fixed Broadband Wireless Access Systems�Amendment 2: Medium Access Control Modifications and Additional Physical Layer Specifications for 2-11 GHz; Apr. 1, 2003; pp. 1-292.Referenced byCiting PatentFiling datePublication dateApplicantTitleUS8331884 *Sep 29, 2010Dec 11, 2012Marvell International Ltd.Voltage regulator for high performance RF systemsUS8639201Dec 10, 2012Jan 28, 2014Marvell International Ltd.Voltage regulator for high performance RF systems* Cited by examinerClassifications U.S. Classification455/127.1, 455/241.1, 455/127.2International ClassificationH04B7/00, H04B1/04Cooperative ClassificationH03G3/004European ClassificationH03G3/00PRotateOriginal ImageGoogle Home - Sitemap - USPTO Bulk Downloads - Privacy Policy - Terms of Service - About Google Patents - Send FeedbackData provided by IFI CLAIMS Patent Services©2012 Google