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Microwave generator achieved

Foreign code F130007476
File No. 255
Posted date Jul 10, 2013
Country United States of America
Application number 57497804
Gazette No. 20070040510
Gazette No. 7471045
Date of filing Oct 6, 2004
Gazette Date Feb 22, 2007
Gazette Date Dec 30, 2008
International application number JP2004014738
International publication number WO2005036730
Date of international filing Oct 6, 2004
Date of international publication Apr 21, 2005
Priority data
  • P2003-350463 (Oct 9, 2003) JP
  • 2004WO-JP14738 (Oct 6, 2004) WO
Title Microwave generator achieved
Abstract (US7471045)
A microwave generator comprises a magnetron having an anode and a cathode, oscillating by the current supplied to the anode, and generating a microwave, electric-field controlling means for controlling one of the frequency/phase and the amplitude of the microwave by varying the electric field, and magnetic-field varying means for stabilizing the other by varying the magnetic field.
Scope of claims [claim1]
1. A microwave generating apparatus comprising: a magnetron having an anode and a cathode and oscillating by an electric current supplied to the anode, to thereby generate a microwave;
an electric-field controlling device for controlling at least one of a frequency/phase and an amplitude of the microwave, by changing an electric field;
and
a magnetic-field changing device for stabilizing another of the frequency/phase and the amplitude of the microwave, by changing a magnetic field.
[claim2]
2. A microwave generating apparatus comprising: a magnetron having an anode and a cathode and oscillating by an electric current supplied to the anode, to thereby generate a microwave;
an electric-field controlling device for controlling at least one of a frequency/phase and an amplitude of the microwave, by changing an electric field;
and
a magnetic-field controlling device for controlling another of the frequency/phase and the amplitude of the microwave, by changing a magnetic field.
[claim3]
3. The microwave generating apparatus according to claim 1 or 2, further comprising: an injection locking device for controlling the frequency/phase of the microwave, by injecting a reference signal, which has a natural frequency close to a natural oscillation frequency of said magnetron, into said magnetron, drawing an oscillation frequency of said magnetron into the frequency of the reference signal, and locking the oscillation frequency of said magnetron.
  • Inventor, and Inventor/Applicant
  • MATSUMOTO HIROSHI
  • SHINOHARA NAOKI
  • KYOTO UNIVERSITY
IPC(International Patent Classification)
U.S. Cl./(Sub)
  • H01J025/50
  • H03B009/10
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