| CPC H03B 7/146 (2013.01) [G01S 13/887 (2013.01); H03B 7/08 (2013.01)] | 36 Claims |
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1. An oscillator, comprising:
a substrate;
a plurality of oscillation structures that transmit or receive electromagnetic waves and are arranged on the substrate; and
a power feed structure for electrically driving the plurality of oscillation structures, the power feed structure being arranged on the substrate, wherein
the power feed structure includes a power source and a bias supply unit that supplies bias to the plurality of oscillation structures,
the oscillation structures each include one antenna and an N piece (N≥1) of a semiconductor element electrically connected to the antenna,
the semiconductor elements exhibit negative resistance characteristics when driven by the power feed structure, and out of the N piece thereof, a P piece (P≥0) thereof are connected to each other in parallel, and an S piece (S≥0) thereof are connected to each other in series, and with a direction of current flowing perpendicularly upward as to the substrate as a forward direction, an F piece (F≥0) thereof are supplied with bias in the forward direction, and an R piece (R≥0) thereof are supplied with bias in a reverse direction,
the semiconductor element included in at least one of the oscillation structures exhibits asymmetrical current-voltage properties as to each other between forward bias and reverse bias, and
at least one of the N, P, S, F, and R differs from another among the oscillation structures that are different from one another.
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