Antenna coupled millimeter wave oscillator

An oscillator operational in the millimeter wave range including frequencies greater than 30 GHz, comprising:

• a lumped element active circuit including an active element with a negative resistance;
• a lumped element resonator circuit in parallel with said first mentioned circuit and providing resonant circuitry in combination therewith;
• an antenna extending directly from said oscillator and having a length of nominally an odd quarter wavelength at the fundamental frequency of said oscillator and having zero connection length from said oscillator;
• an output port including a resonant iris transmitting energy radiated by said antenna at said fundamental frequency.

An oscillator operational in the millimeter wave range including frequencies greater than 30 GHz comprising:

• a bias port;
• an output port;
• a quarter wave choke having first and second terminals, said first terminal coupled to said bias port;
• a first circuit comprising a lumped element active circuit including an active element with a negative resistance, said first circuit having first and second terminals, said first terminal of said first circuit being coupled to said second terminal of said choke;
• a second circuit comprising a lumped element resonator circuit in parallel with said first circuit and providing resonant circuitry in combination therewith, said second circuit having first and second terminals, said first terminal of said second circuit being coupled to said second terminal of said choke and said first terminal of said first circuit, said second terminal of said second circuit being coupled to said second terminal of said first circuit;
• an antenna connected with zero connection length to said second terminal of said choke and said first terminal of said first circuit and said first terminal of said second circuit and radiating energy generated by said oscillator to said output port.

An oscillator operational in the millimeter wave range including frequencies greater than 30 GHz, comprising:

• a housing having a bottom wall, and front, back and side walls extending upwardly therefrom;
• a lumped element active circuit in said housing on said bottom wall including an active element with a negative resistance;
• a lumped element resonator circuit in said housing on said bottom wall in parallel with said first mentioned circuit and providing resonant circuitry in combination therewith;
• an antenna directly connected to and extending upwardly from said resonant circuitry, said antenna extending upwardly within said housing and being spaced between said front and back walls.