Compact sources of high RF power for DNP applications

Pulsed and CW amplifiers and oscillators are being developed for applications requiring 1–20 W of power at frequencies up to 264 GHz. The design and test results will be presented for a 5W CW 187 GHz amplifier, a 5W CW 264 GHz oscillator, and a 20W pulsed 264 GHz amplifier. All three are compact (< 8 kg) devices based upon Extended Interaction Klystron technology, and operate from commercially available power supplies.