Active RF Cavity and Applications
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.
Document Details
- Document Type
- Technical Report
- Publication Date
- Dec 01, 1997
- Accession Number
- ADA335172
Entities
People
- Bernard R. Cheo
- Frank Cassara
- Jerry Shmoys
- Lin-wen W. Cheo
- Meng-ken Ke