New technique for combining solid-state sources

The advent of many new moderate power solid-state devices has created a renewed interest in the techniques for combining these devices to achieve even higher powers. This paper describes a new technique for combining large numbers of energy sources by using a dense array of radiating elements. The impedance of the radiating elements, as determined theoretically and confirmed using an array simulator, may be well mat to parallel one hundred transistor amplifiers has a net gain of 4.75 dB at 410 MHz with 100-watts output. Tests in which individual failures were simulated indicate that array elements were well isolated from each other.