Accession Number : ADA335172

Title :   Active RF Cavity and Applications

Descriptive Note : Technical rept. 29 Jul 94-31 Jan 97

Corporate Author : ARIA MICROWAVE SYSTEMS INC ENGLEWOOD NJ

Personal Author(s) : Cheo, Bernard R. ; Shmoys, Jerry ; Cassara, Frank ; Ke, Meng-ken ; Cheo, Lin-wen W.

PDF Url : ADA335172

Report Date : DEC 1997

Pagination or Media Count : 156

Abstract : Active RF cavity amplifier (ARFCA) is a solid state device (SSD) based amplifier which uses the cavity simultaneously as the combiner, the matching transformer and the heat sink. As prototype device was developed using six Motorola MFR/6030 transistors or equivalent operating over 1.6 - 1.7 GHz. The device as given by the Motorola data book has a nominal (below saturation) output power gain at 7.5 dB min and 7.7 dB typical with collector efficiency at 40% minimum and 43% typical. The prototype ARFCA has a measured gain of 8.4 dB with efficiency 45.4% at 198.2 W output power. The model can be assembled by hand tools and requires no soldering. It uses no discrete passive electronic components except the few capacitors associated with the bias power supply. A high power model at 1.2 kW and 915 MHz is being developed, aiming for applications in industrial and chemical processing. Because of its high efficiency and reliability and low cost manufacturing. ARFCA promises to become a desirable rf source in many high power high frequency applications.

Descriptors :   *RADIOFREQUENCY AMPLIFIERS, HIGH POWER, LOW COSTS, PROTOTYPES, POWER AMPLIFIERS, MONOLITHIC STRUCTURES(ELECTRONICS), HEAT SINKS, RADIOFREQUENCY GENERATORS, BIPOLAR TRANSISTORS, TRANSFORMERS, JUNCTION TRANSISTORS.

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE