Patent ID: 7088195
Filing Date: 2006-08-08
Classification: H01L,H03B

Abstract:
1. A semiconductor integrated circuit device, comprising a substrate, a multilayer interconnection layer deposited on said substrate, and a voltage controlled oscillator incorporated into said semiconductor integrated circuit device, said voltage controlled oscillator comprising: output terminals; spiral inductors deposited in said multilayer interconnection layer and connected to said output terminals; variable capacitors formed in said multilaver interconnection layer, in a region directly underlying said spiral inductors, but without underlying the center axes of said spiral inductors, said variable capacitors connected in parallel to said spiral inductors to form a resonant circuit in conjunction therewith; and a negative resistance section formed in said region, said negative resistance section connected to said resonant circuit and adapted for connection to a power supply, to supply current to said resonant circuit in sync with a resonant signal produced by the resonant circuit.