Frequency and phase modulation performance of an injection-locked CW magnetron

被引：59
作者：
Tahir, Imran [1 ]
Dexter, Amos [1 ]
Carter, Richard [1 ]
机构：
[1] Univ Lancaster, Dept Elect Engn, Lancaster LA1 4YR, England
来源：
IEEE TRANSACTIONS ON ELECTRON DEVICES | 2006年 / 53卷 / 07期
关键词：
amplification; frequency shift keying (FSK); injection locking; magnetrons; modulation; phase-locked loops (PLL); phase shift keying (PSK); twining;
D O I：
10.1109/TED.2006.876268
中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
It is demonstrated that the output of a 2.45-GHz magnetron operated as a current-controlled oscillator through its pushing characteristic can lock to injection signals in times of the order of 100-500 ns depending on injection power, magnetron heater power, load impedance, and frequency offset of the injection frequency from the natural frequency of the magnetron. Accordingly, the magnetron can follow frequency and phase modulations of the injection signal, behaving as a narrow-band amplifier. The transmission of phase-shift-keyed data at 2 Mb/s has been achieved. Measurements of the frequency response and anode current after a switch of phase as a function of average anode current and heater power give new insight into the locking mechanisms and the noise characteristics of magnetrons.
引用
收藏
页码：1721 / 1729
页数：9
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