W-Band waveguide variable controlled oscillator

A variable controlled oscillator comprising:

• a plurality of metal block sections defining a waveguide channel;
• a semiconductor oscillator electrically connected to a floor of the waveguide channel, said semiconductor oscillator including a resonator electrically connected to an end cap of aid semiconductor oscillator opposite said floor;
• and
• a varactor assembly positioned within a cavity defined by the metal block sections wherein said waveguide channel and said cavity are interconnected, said varactor assembly including a varactor diode positioned relative to said semiconductor oscillator and an adjustable spacer portion for adjusting the distance between the varactor diode and the semiconductor oscillator.

A variable controlled oscillator comprising:

• a plurality of metal block sections defining a waveguide channel;
• a Gunn diode electrically connected to a floor of the waveguide channel, said Gunn diode including a mechanical resonator electrically connected to a cap of the Gunn diode opposite the waveguide floor;
• first bias means for applying an electrical DC bias to said Gunn diode such that said Gunn diode oscillates at a specific frequency, said first bias means including a first DC voltage source, a first DC bias filter, and a first wire inductor arranged such that a first end of said wire inductor is connected to said resonator, a second opposite end of said wire inductor being connected to a first end of said DC bias filter, a second opposite end of said DC bias filter being connected to said first DC voltage source such that RF signals generated by said Gunn diode do not propagate back to the first DC source;
• a varactor assembly positioned within a cavity defined by the metal block sections wherein said waveguide channel and said cavity are interconnected, said varactor assembly including a varactor diode positioned relative to said Gunn diode and an adjustable spacer portion for adjusting the distance between the varactor diode and the Gunn diode, said varactor assembly further including a second bias means for applying an electrical DC bias to said varactor diode, said second bias means including a second DC voltage source, a second DC bias filter, and a second wire inductor, wherein said second DC bias filter receives a DC bias voltage from said second DC bias source to apply the DC bias voltage to one end of said varactor diode at one end through said second DC bias filter in a back bias configuration and said second wire inductor being electrically connected to an opposite end of said varactor diode and at least one metal block section;
• an adjustable self-locking back-short, said adjustable self-locking back-short being variably positionable within said waveguide channels to optimize the frequency and power of the oscillator;
• and
• a fine tuning screw, said fine tuning screw threadably engagable within said block and having an end positioned within said waveguide channel adjacent to said resonator such that rotation of said screw adjusts the position of said screw within said waveguide channel.