JPS6489621A - Frequency synthesizer - Google Patents

Frequency synthesizer

Info

Publication number
JPS6489621A
JPS6489621A JP62243634A JP24363487A JPS6489621A JP S6489621 A JPS6489621 A JP S6489621A JP 62243634 A JP62243634 A JP 62243634A JP 24363487 A JP24363487 A JP 24363487A JP S6489621 A JPS6489621 A JP S6489621A
Authority
JP
Japan
Prior art keywords
frequency
point
adjusting screw
phase synthesizing
synthesizing condition
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP62243634A
Inventor
Tomoyoshi Ishikawa
Original Assignee
Nec Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nec Corp filed Critical Nec Corp
Priority to JP62243634A priority Critical patent/JPS6489621A/en
Publication of JPS6489621A publication Critical patent/JPS6489621A/en
Application status is Pending legal-status Critical

Links

Abstract

PURPOSE:To easily obtain a phase synthesizing condition over a wide frequency range by sending frequency setting information to a frequency synthesizer and providing a logical circuit to instruct the frequency adjusting quantity of a voltage control oscillator. CONSTITUTION:A logic circuit 9 receives the frequency setting information from a frequency setting switch 1, sends these information to frequency synthesizers 2 and 3. Then, the circuit 9 receives the digital information of an analog digital converter 7 and sends a signal, which instructs the revolving direction of an adjusting screw, to a display 8 in correspondence to the change. The respective frequency synthesizers 2 and 3 revolve the adjusting screw of a voltage control oscillator 4 by the frequency setting information and change an output frequency f0. Then, the phase synthesizing condition is obtained at any point of the points A, B and C. Here, when the phase synthesizing condition is obtained at the A point or the C point, the frequency synthesizers 2 and 3 instruct the revolving direction of the adjusting screw of the oscillator 4 with using the display 8 and further, the phase synthesizing condition at the B point can be obtained by revolving the adjusting screw.
JP62243634A 1987-09-30 1987-09-30 Frequency synthesizer Pending JPS6489621A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP62243634A JPS6489621A (en) 1987-09-30 1987-09-30 Frequency synthesizer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP62243634A JPS6489621A (en) 1987-09-30 1987-09-30 Frequency synthesizer

Publications (1)

Publication Number Publication Date
JPS6489621A true JPS6489621A (en) 1989-04-04

Family

ID=17106736

Family Applications (1)

Application Number Title Priority Date Filing Date
JP62243634A Pending JPS6489621A (en) 1987-09-30 1987-09-30 Frequency synthesizer

Country Status (1)

Country Link
JP (1) JPS6489621A (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0328834U (en) * 1989-07-27 1991-03-22
US5249079A (en) * 1989-08-28 1993-09-28 Minolta Camera Kabushiki Kaisha Lens system
CN101933406A (en) * 2007-11-30 2010-12-29 斯蒂尔河系统股份有限公司 Matching a resonant frequency of a resonant cavity to a frequency of an input voltage
US8907311B2 (en) 2005-11-18 2014-12-09 Mevion Medical Systems, Inc. Charged particle radiation therapy
US8927950B2 (en) 2012-09-28 2015-01-06 Mevion Medical Systems, Inc. Focusing a particle beam
US8952634B2 (en) 2004-07-21 2015-02-10 Mevion Medical Systems, Inc. Programmable radio frequency waveform generator for a synchrocyclotron
US9155186B2 (en) 2012-09-28 2015-10-06 Mevion Medical Systems, Inc. Focusing a particle beam using magnetic field flutter
US9185789B2 (en) 2012-09-28 2015-11-10 Mevion Medical Systems, Inc. Magnetic shims to alter magnetic fields
US9301384B2 (en) 2012-09-28 2016-03-29 Mevion Medical Systems, Inc. Adjusting energy of a particle beam
US9545528B2 (en) 2012-09-28 2017-01-17 Mevion Medical Systems, Inc. Controlling particle therapy
US9622335B2 (en) 2012-09-28 2017-04-11 Mevion Medical Systems, Inc. Magnetic field regenerator
US9661736B2 (en) 2014-02-20 2017-05-23 Mevion Medical Systems, Inc. Scanning system for a particle therapy system
US9681531B2 (en) 2012-09-28 2017-06-13 Mevion Medical Systems, Inc. Control system for a particle accelerator
US9730308B2 (en) 2013-06-12 2017-08-08 Mevion Medical Systems, Inc. Particle accelerator that produces charged particles having variable energies
US9950194B2 (en) 2014-09-09 2018-04-24 Mevion Medical Systems, Inc. Patient positioning system
US9962560B2 (en) 2013-12-20 2018-05-08 Mevion Medical Systems, Inc. Collimator and energy degrader
US10254739B2 (en) 2012-09-28 2019-04-09 Mevion Medical Systems, Inc. Coil positioning system
US10258810B2 (en) 2013-09-27 2019-04-16 Mevion Medical Systems, Inc. Particle beam scanning

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5933934A (en) * 1982-08-18 1984-02-24 Nec Corp Frequency synthesizer

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5933934A (en) * 1982-08-18 1984-02-24 Nec Corp Frequency synthesizer

Cited By (29)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0328834U (en) * 1989-07-27 1991-03-22
US5249079A (en) * 1989-08-28 1993-09-28 Minolta Camera Kabushiki Kaisha Lens system
US8952634B2 (en) 2004-07-21 2015-02-10 Mevion Medical Systems, Inc. Programmable radio frequency waveform generator for a synchrocyclotron
US9452301B2 (en) 2005-11-18 2016-09-27 Mevion Medical Systems, Inc. Inner gantry
US10279199B2 (en) 2005-11-18 2019-05-07 Mevion Medical Systems, Inc. Inner gantry
US8916843B2 (en) 2005-11-18 2014-12-23 Mevion Medical Systems, Inc. Inner gantry
US9925395B2 (en) 2005-11-18 2018-03-27 Mevion Medical Systems, Inc. Inner gantry
US8907311B2 (en) 2005-11-18 2014-12-09 Mevion Medical Systems, Inc. Charged particle radiation therapy
US8933650B2 (en) 2007-11-30 2015-01-13 Mevion Medical Systems, Inc. Matching a resonant frequency of a resonant cavity to a frequency of an input voltage
CN101933406A (en) * 2007-11-30 2010-12-29 斯蒂尔河系统股份有限公司 Matching a resonant frequency of a resonant cavity to a frequency of an input voltage
JP2011507151A (en) * 2007-11-30 2011-03-03 スティル・リバー・システムズ・インコーポレーテッド Match the resonant frequency of the resonant cavity to the frequency of the input voltage
US10155124B2 (en) 2012-09-28 2018-12-18 Mevion Medical Systems, Inc. Controlling particle therapy
US9301384B2 (en) 2012-09-28 2016-03-29 Mevion Medical Systems, Inc. Adjusting energy of a particle beam
US9545528B2 (en) 2012-09-28 2017-01-17 Mevion Medical Systems, Inc. Controlling particle therapy
US9185789B2 (en) 2012-09-28 2015-11-10 Mevion Medical Systems, Inc. Magnetic shims to alter magnetic fields
US10368429B2 (en) 2012-09-28 2019-07-30 Mevion Medical Systems, Inc. Magnetic field regenerator
US9681531B2 (en) 2012-09-28 2017-06-13 Mevion Medical Systems, Inc. Control system for a particle accelerator
US9706636B2 (en) 2012-09-28 2017-07-11 Mevion Medical Systems, Inc. Adjusting energy of a particle beam
US9155186B2 (en) 2012-09-28 2015-10-06 Mevion Medical Systems, Inc. Focusing a particle beam using magnetic field flutter
US8927950B2 (en) 2012-09-28 2015-01-06 Mevion Medical Systems, Inc. Focusing a particle beam
US10254739B2 (en) 2012-09-28 2019-04-09 Mevion Medical Systems, Inc. Coil positioning system
US9622335B2 (en) 2012-09-28 2017-04-11 Mevion Medical Systems, Inc. Magnetic field regenerator
US9730308B2 (en) 2013-06-12 2017-08-08 Mevion Medical Systems, Inc. Particle accelerator that produces charged particles having variable energies
US10456591B2 (en) 2013-09-27 2019-10-29 Mevion Medical Systems, Inc. Particle beam scanning
US10258810B2 (en) 2013-09-27 2019-04-16 Mevion Medical Systems, Inc. Particle beam scanning
US9962560B2 (en) 2013-12-20 2018-05-08 Mevion Medical Systems, Inc. Collimator and energy degrader
US9661736B2 (en) 2014-02-20 2017-05-23 Mevion Medical Systems, Inc. Scanning system for a particle therapy system
US10434331B2 (en) 2014-02-20 2019-10-08 Mevion Medical Systems, Inc. Scanning system
US9950194B2 (en) 2014-09-09 2018-04-24 Mevion Medical Systems, Inc. Patient positioning system

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