RESEARCH AND DEVELOPMENT ON L-BAND CROSSED-FIELD AMPLIFIER CHAIN
Abstract
A crossed-field amplifier for use in an L-band phased array radar has been developed. The SFD-209 is designed to be stacked on half-wavelength centers in a permanent magnet array. The tube will generate peak power up to 150 kw with 16 db gain at an efficiency of 50% over a 100 Mc band centered on 1200 Mc, with exceptional phase characteristics. Average power of 1.5 kilowatts and operating life in excess of 5000 hours have been demonstrated. The SFD-209 operates from a dc power supply with very low modulator power. Cold cathode operation with RF turn on and control electrode turn off is used. The duty cycle may be changed instantaneously by changing repetition rate and/or pulse width with no change in modulator power on a per pulse basis. Pulse widths from 0.1 microsec to 600 microsec and repetition rates as low as 1 pulse per minute have been demonstrated. The ability to pulse code a CW input signal and the ability to amplify a complex signal have been demonstrated.
Document Details
- Document Type
- Technical Report
- Publication Date
- Apr 01, 1965
- Accession Number
- AD0487442
Entities
People
- A. Wilczek