Demonstration of microwave generation by a ferroelectric-cathode tube

R. Drori*, M. Einat, D. Shur, E. Jerby, G. Rosenman, R. Advani, R. J. Temkin, C. Pralong

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review


A ferroelectric cathode is employed in a cyclotron-resonance maser (CRM). The CRM oscillator device operates at ∼7 GHz, near the cutoff frequency of a hollow cylindrical cavity. The cathode is made of a PLZT 12/65/35 ceramic with high-dielectric constant (εr∼4000). Electrons are extracted from the plasma excited on the cathode surface by ∼1 kV short rise-time pulses. The use of ferroelectric cathodes may advance the microwave tube technology for various applications.

Original languageEnglish
Pages (from-to)335-337
Number of pages3
JournalApplied Physics Letters
Issue number3
StatePublished - 18 Jan 1999


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