Title:
広帯域周波数を発振する装置および方法
Document Type and Number:
Japanese Patent JP2008514163
Kind Code:
A
Abstract:
An apparatus for oscillating a frequency, which comprises a phase lock loop, see fig. 5, a variable frequency divider() is shown, that divides a first frequency (Fout) signal by a division ratio to generate a second frequency signal, this based on a comparison of reference frequency clock input (Fref) and feedback input to phase/frequency detector (510). A charge pump (520) and loop filter (530) are shown with a divider (550) that divides the second frequency signal (355) to allow the correct feedback frequency to be realized. The VCO (540) inherently has a resonant circuit including the capacitors to be selected and a corresponding control voltage to set the frequency of operation as well as an active circuit (320) for proper gain.
Inventors:
Park Junbe
Listen
Region
Lee Kyung Ho
Listen
Region
Lee Kyung Ho
Application Number:
JP2007533633A
Publication Date:
May 01, 2008
Filing Date:
September 21, 2005
Export Citation:
Assignee:
GTC Semiconductor Inc.
International Classes:
H03L7/183; H03B5/08; H03B5/12; H03L7/06; H03L7/08; H03L7/087; H03L7/18; H03L7/187; H03L7/22
Domestic Patent References:
| JPH07336219A | 1995-12-22 | |||
| JP2002314414A | 2002-10-25 | |||
| JP2002158538A | 2002-05-31 | |||
| JPS63305619A | 1988-12-13 | |||
| JPH07240685A | 1995-09-12 | |||
| JPS6448934U | 1989-03-27 | |||
| JP2002217725A | 2002-08-02 | |||
| JPH09261042A | 1997-10-03 | |||
| JPS61225928A | 1986-10-07 | |||
| JPS6382023A | 1988-04-12 | |||
| JP2001345698A | 2001-12-14 | |||
| JPS59108432A | 1984-06-22 | |||
| JPH022215A | 1990-01-08 | |||
| JPH1041812A | 1998-02-13 | |||
| JP2000209027A | 2000-07-28 | |||
| JP2004173177A | 2004-06-17 | |||
| JPS5253644U | 1977-04-18 | |||
| JP2003101410A | 2003-04-04 |
Foreign References:
| US6744324B1 | 2004-06-01 |
Attorney, Agent or Firm:
Yoshikazu Tani
Kazuo Abe
Kazuo Abe