Microwave / quasi-millimeter wave band oscillator

摘要

PROBLEM TO BE SOLVED: To minimize effects on resonance and oscillation frequencies even when a substrate changes in dielectric constant, and efficiently lay out a circuit on the substrate.;SOLUTION: An open end of a cylinder 22 with a closed opposite end is connected onto a resin substrate 1 with a conductive adhesive 21 and two probes 23, 24 comprising coplanar lines are arranged on the substrate 1 from an outer circumference to a center of the cylinder 22 to provide a surface-mounted cavity resonant circuit, and the two probes 23, 24 are connected to an amplification element 27 via transmission lines 25, 26 comprising coplanar lines. The two probes 23, 24 are led out from positions on the circumference of the cylinder 22 apart from each other by an angle of zero degrees (parallel positions), so that the probes 23, 24 and the transmission lines 25, 26 have minimum lengths satisfying an oscillation condition.;COPYRIGHT: (C)2014,JPO&INPIT