A microwave gyro amplifier with a ferroelectric cathode

Moshe Einat; Eli Jerby; Gil Rosenman

doi:10.1109/22.993430

A microwave gyro amplifier with a ferroelectric cathode

Moshe Einat, Eli Jerby, Gil Rosenman

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

A ferroelectric cathode is employed for the first time as the electron-beam source in a microwave amplifier tube. A PLZT 12/65/35 ferroelectric ceramic with a high dielectric constant (ε_r ∼ 4000) is used in a form of a hollow cathode. The tube is operated in poor vacuum conditions (2 × 10^-5 Torr) at room temperature, in a mechanism of a cyclotron-resonance maser amplifier. The device operates near the waveguide cutoff frequency at 6927 MHz. A 22-dB electronic gain and a 25-W output power are measured in this experiment.

Original language	English
Pages (from-to)	1227-1230
Number of pages	4
Journal	IEEE Transactions on Microwave Theory and Techniques
Volume	50
Issue number	4
DOIs	https://doi.org/10.1109/22.993430
State	Published - Apr 2002
Externally published	Yes

Keywords

Cold-cathode tubes
Electron emission
Electron guns
Ferroelectric materials
Gyrotrons

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10.1109/22.993430

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title = "A microwave gyro amplifier with a ferroelectric cathode",

abstract = "A ferroelectric cathode is employed for the first time as the electron-beam source in a microwave amplifier tube. A PLZT 12/65/35 ferroelectric ceramic with a high dielectric constant (εr ∼ 4000) is used in a form of a hollow cathode. The tube is operated in poor vacuum conditions (2 × 10-5 Torr) at room temperature, in a mechanism of a cyclotron-resonance maser amplifier. The device operates near the waveguide cutoff frequency at 6927 MHz. A 22-dB electronic gain and a 25-W output power are measured in this experiment.",

keywords = "Cold-cathode tubes, Electron emission, Electron guns, Ferroelectric materials, Gyrotrons",

author = "Moshe Einat and Eli Jerby and Gil Rosenman",

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AU - Jerby, Eli

AU - Rosenman, Gil

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AB - A ferroelectric cathode is employed for the first time as the electron-beam source in a microwave amplifier tube. A PLZT 12/65/35 ferroelectric ceramic with a high dielectric constant (εr ∼ 4000) is used in a form of a hollow cathode. The tube is operated in poor vacuum conditions (2 × 10-5 Torr) at room temperature, in a mechanism of a cyclotron-resonance maser amplifier. The device operates near the waveguide cutoff frequency at 6927 MHz. A 22-dB electronic gain and a 25-W output power are measured in this experiment.

KW - Cold-cathode tubes

KW - Electron emission

KW - Electron guns

KW - Ferroelectric materials

KW - Gyrotrons

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JO - IEEE Transactions on Microwave Theory and Techniques

JF - IEEE Transactions on Microwave Theory and Techniques

IS - 4

ER -

A microwave gyro amplifier with a ferroelectric cathode

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Keywords

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