| 摘要 |
<p>A microwave power combining FET amplifier includes T-type branch circuits (13,14) for power splitting and for power combining, and interstage matching circuits (6a,6b) respectively corresponding to a plurality of multistage FET amplifiers (3a,3b,4a,4b). Predetermined positions (a,b) opposing to each other respectively at the interstage matching circuits are connected by a resistance circuit (15) having a predetermined resistance value. Accordingly, it is possible, without including a power splitting circuit and a power combining circuit using a branch-line type coupler or Wilkinson type coupler, to perform the equivalent function to the amplfiers employing the power splitting and power combining circuits using these types of couplers. The arrangement is simplified and the shape is made small in size, and it is particularly suitable when the invention is to be realised by using a monolithic integrated circuit.</p> |
