RF Characterization of 28 GHz, 200 kW Gyrotron Resonator by Using Quasi Optical Bench

Yadav, V and Kumar, N and Singh, U and Kumar, A and Deorani, SC and Sinha, Ak (2013) RF Characterization of 28 GHz, 200 kW Gyrotron Resonator by Using Quasi Optical Bench. In: National Conference on Innovation in Electronics and Communication Engineering (NIECE - 2013), February 22-23, 2013, Jaipur. (Submitted)

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Abstract

This paper presents experimental results for cold testing a 28 GHz, 200 kW gyrotron open resonator. Experiments were accomplished to. A new non-destructive technique was used to measure resonant frequency and their particular quality factor for TE mode at the frequency 28GHz. The good agreement between experimental and theoretical was found. The results verify the design and fabrication of the specific gyrotron cavity. The RF characterization of open ended tapered cylindrical resonator for a gyrotron is considered to see the performance of the resonator before the final assembly of the device. An quasi optical bench is used to launch the RF wave in the tapered cavity. In the experiment, the bigger mouth of the resonator is exposed in the RF, so that at the resonance the power will be coupled into the cavity resulting less power reflected from the plane at the mouth of the cavity. The eigenfrequency and the loaded Q are measured by the resonance curve displayed on the VNA. The loaded quality factor was comuted by half power bandwidth method at -3 dB point. On the behalf of the experiments, good agreement between experimental and theoretical results was found. The results were quite good and suitable for suppression the undesired modes in the specific gyrotron cavity.

Item Type:	Conference or Workshop Item (Paper)
Subjects:	?? TK ?? Microwave Tubes > Gyrotrons
Divisions:	Microwave Tubes
Depositing User:	Mr. Rohit Singh
Date Deposited:	24 May 2013 06:18
Last Modified:	24 May 2013 06:18
URI:	http://ceeri.csircentral.net/id/eprint/9

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