| 摘要 |
A voltage controlled oscillator with a microstrip line suitable for coarse adjustment of an oscillation frequency band, the voltage controlled oscillator includes a transistor for oscillation that outputs an oscillation signal; a microstrip line formed on a substrate together with the transistor for oscillation, having one end connected to the transistor for oscillation and the other end connected to a ground electrode formed on the substrate, and thus constituting a part of a frequency determining element that determines a frequency of the oscillation signal according to a line length from the one end of the microstrip line to the ground electrode; and a conductor for coarse adjustment that connects between the one end and the other end of the microstrip line to the ground electrode, thereby reducing the line length of the microstrip line in the connection state.
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