New 915 MHz Low Power Generator for Materials Testing Utilizing an Evanescent Mode Cavity

Autor: Per O. Risman, Charles R. Buffler
Rok vydání: 1996
Předmět:
Zdroj: MRS Proceedings. 430
ISSN: 1946-4274
0272-9172
Popis: The economy of utilizing 915 MHz vs. 2450 MHz microwave equipment has long been acknowledged for many industrial processes. A severe roadblock to advancing 915 MHz processing has been the lack of proper equipment to run test trials. At 2450 MHz low power equipment is readily available and inexpensive, even resorting to the use of the consumer microwave ovens. At 915 MHz, however, prototyping systems have only been available using very expensive 5 kW magnetrons. Experimenters have been forced to use 2450 MHz low power equipment to explore scale-up potential for high power 915 MHz systems. Because of wavelength and dielectric property differences, this procedure may give highly erroneous results, sometimes leading to the purchase of production equipment which does not work.This paper describes an inexpensive, low power, microwave system for prototype testing at 915 MHz. A 600 watt generator is coupled to a specially designed evanescent mode applicator/cavity for the trial testing prior to making a scale-up decision. A description of the generator and evanescent cavity design are presented.
Databáze: OpenAIRE
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