U.H.F. tunnel-diode amplifier

The paper is mainly devoted to a detailed account of the design of the reflection amplifiers for use in a tunnel-diode repeater described in a companion paper. The amplifiers are constructed in stripline, incorporating transmission lines of variable characteristic impedance. Thus tunnel diodes of widely differing characteristics can be accommodated in a single amplifier; yet the tuning procedure is particularly simple. Results are also given for a circulator-coupled amplifier formed from the reflection amplifier and a 4-port circulator.