Dielectric resonator oscillator and down converter using the sam

Oscillators – With outer casing or housing

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Details

331 99, 331117D, 331117FE, 3332191, 455318, 455327, H03B 518, H04B 128

Patent

active

058015906

ABSTRACT:
An oscillator circuit including a metal plate secured to a dielectric substrate. A micro strip line is mounted on the dielectric substrate. One end of the micro strip line is connected to the gate terminal of a field effect transistor for microwave oscillation and the other end of the micro strip line is grounded to the metal plate via a terminal resistor. A dielectric resonator is secured with an ordinary adhesive to the inner wall of a shield case. Attaching the dielectric resonator to the shield case allows the degree of coupling, defined by the distance between the micro strip line and the dielectric resonator, to be freely set. A tuning screw is screwed through the metal plate and the dieletric substrate opposite to the dielectric resonator. The microwave oscillation circuit can be used with a down converter.

REFERENCES:
patent: 4435688 (1984-03-01), Shinkawa et al.
patent: 4591806 (1986-05-01), Havens
patent: 4618836 (1986-10-01), Gannon et al.
patent: 5272525 (1993-12-01), Borchardt et al.

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