Tunable Double-Sapphire-Loaded Microwave Cavity with High-Q Factor

K. Watabe; S. Oshima; T. Ikegami; John Hartnett

Tunable Double-Sapphire-Loaded Microwave Cavity with High-Q Factor

K. Watabe, S. Oshima, T. Ikegami, John Hartnett

Graduate Research School

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

Abstract

A frequency-tuning method in the microwave region, which maintains a high unloaded Q-factor, was demonstrated using a double-sapphire-loaded cavity which operates on the Whispering Gallery mode, WGH(9,1,0). Two adjacent nominally identical sapphire cylinders were positioned in a copper cavity and tuned by changing their relative coupling. A frequency tuning range of 85 MHz and a maximum unloaded Q-factor of 1.3 x 10(5) was experimentally measured at room temperature. This is only 13% less than the single resonator Q-factor, which is a small compromise to pay for the increased tuning capacity.

Original language	English
Pages (from-to)	1393-1396
Journal	IEICE Transactions on Electronics
Volume	E86-C
Issue number	7
Publication status	Published - 2003

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Cite this

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title = "Tunable Double-Sapphire-Loaded Microwave Cavity with High-Q Factor",

abstract = "A frequency-tuning method in the microwave region, which maintains a high unloaded Q-factor, was demonstrated using a double-sapphire-loaded cavity which operates on the Whispering Gallery mode, WGH(9,1,0). Two adjacent nominally identical sapphire cylinders were positioned in a copper cavity and tuned by changing their relative coupling. A frequency tuning range of 85 MHz and a maximum unloaded Q-factor of 1.3 x 10(5) was experimentally measured at room temperature. This is only 13% less than the single resonator Q-factor, which is a small compromise to pay for the increased tuning capacity.",

author = "K. Watabe and S. Oshima and T. Ikegami and John Hartnett",

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PY - 2003

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N2 - A frequency-tuning method in the microwave region, which maintains a high unloaded Q-factor, was demonstrated using a double-sapphire-loaded cavity which operates on the Whispering Gallery mode, WGH(9,1,0). Two adjacent nominally identical sapphire cylinders were positioned in a copper cavity and tuned by changing their relative coupling. A frequency tuning range of 85 MHz and a maximum unloaded Q-factor of 1.3 x 10(5) was experimentally measured at room temperature. This is only 13% less than the single resonator Q-factor, which is a small compromise to pay for the increased tuning capacity.

AB - A frequency-tuning method in the microwave region, which maintains a high unloaded Q-factor, was demonstrated using a double-sapphire-loaded cavity which operates on the Whispering Gallery mode, WGH(9,1,0). Two adjacent nominally identical sapphire cylinders were positioned in a copper cavity and tuned by changing their relative coupling. A frequency tuning range of 85 MHz and a maximum unloaded Q-factor of 1.3 x 10(5) was experimentally measured at room temperature. This is only 13% less than the single resonator Q-factor, which is a small compromise to pay for the increased tuning capacity.

M3 - Article

SN - 0916-8524

VL - E86-C

SP - 1393

EP - 1396

JO - IEICE Transactions on Electronics

JF - IEICE Transactions on Electronics

IS - 7

ER -

Tunable Double-Sapphire-Loaded Microwave Cavity with High-Q Factor

Abstract

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