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Power Combining of Dual X-Band Coaxial Magnetrons Based on Peer-to-Peer Locking
- Source :
- IEEE Transactions on Electron Devices. 68:6518-6524
- Publication Year :
- 2021
- Publisher :
- Institute of Electrical and Electronics Engineers (IEEE), 2021.
-
Abstract
- A system for the power combining of dual X-band coaxial magnetrons-based on the peer-to-peer locking is presented in this article. The locking condition of peer-to-peer locking was derived and proposed, in which the frequency pushing effect was taken into account. The frequency pushing parameter of X-band coaxial magnetron was measured by an injection locking experiment. Dual X-band coaxial magnetrons with similar operation characteristics were employed and driven by single modulator to synchronize the pulse generation in the power combining system based on peer-to-peer locking. As the prediction of theoretical derivation, the locking phenomenon emerged with a locked frequency of 9304.41 MHz when the free running frequency of one magnetron was fixed as 9304 MHz. A combined power of 3.09 MW for 3.5 μs pulsewidth with the total power efficiency of 83.5% was achieved in the experiment, which was approximately 1.5 times the maximum peak output power of commercial X-band coaxial magnetron. Due to the measured phase jitter of ±8° caused by the anode current ripple and frequency fluctuation of the magnetrons, the combined power jitter was estimated as ±0.5%, which was acceptable for the system.
Details
- ISSN :
- 15579646 and 00189383
- Volume :
- 68
- Database :
- OpenAIRE
- Journal :
- IEEE Transactions on Electron Devices
- Accession number :
- edsair.doi...........b8aecadaf2167de5bc93bbff722e4573