| 摘要 |
PROBLEM TO BE SOLVED: To enable hybrid constitution by mounting MESFETs or the like for constituting a wide band amplification circuit on a single layer board. SOLUTION: This wide band amplification circuit is provided with a first amplification circuit 25 and a second amplification circuit 26 which are push-pull connected between an input transformer 20 and an output transformer 22 and constituted of a plurality of stages of MESFETs 27a, 27b, 28a, 28b, 29a, 29b. A plurality of stages of the MESFETs, wide band blocking inductors 32a, 32b and other chip components are attached on the single layer board. Gate bias wires 30 of the MESFETs are made to pass under the inductors 32a, 32b.
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