Generation of microwave power with a sparkgap cavity
Abstract
A theory of a lambda/4 transmission line resonator containing a spark gap is developed and parameters such as output spectrum, bandwidth, Q factor, and efficiency are derived. Equivalent circuits incorporating different sparkgap parameters are presented and used for numerical simulation of cavity output. Several fixed and variable frequency cavities are constructed and tested. Typical peak power outputs are 7.2 kW into 50ohm line at a frequency of 2.1 GHz, and 27 kW into 50ohm line at a frequency of 1.5 GHz. For proper operation of this device the spark resistance must fall to a value less than the characteristic impedance of the line in a time less than T where the required frequency equals 1/2 T.
 Publication:

IEEE Transactions on Microwave Theory Techniques
 Pub Date:
 May 1978
 DOI:
 10.1109/TMTT.1978.1129391
 Bibcode:
 1978ITMTT..26..369R
 Keywords:

 Cavity Resonators;
 Energy Conversion Efficiency;
 Equivalent Circuits;
 Microwave Oscillators;
 Spark Gaps;
 Transmission Lines;
 Bandwidth;
 Digital Simulation;
 Electrical Impedance;
 Network Analysis;
 Q Factors;
 Ultrahigh Frequencies;
 Electronics and Electrical Engineering