Oscillators – Solid state active element oscillator – Significant distributed parameter resonator
Patent
1990-01-03
1991-03-12
Grimm, Siegfried H.
Oscillators
Solid state active element oscillator
Significant distributed parameter resonator
331107SL, 331107G, 331177V, H03B 714, H03B 914
Patent
active
049995871
ABSTRACT:
In a waveguide oscillator, a Gunn diode or other negative-resistance oscillator device (2) has a resonant cap (3) for coupling to the waveguide (1), and a tuning varactor diode (11) is coupled by a probe (13) to the electromagnetic filed in the vicinity of the cap (3). In accordance with the invention, a mechanically simple, compact and cheap oscillator arrangement is obtained by integrating both the varactor diode (11) and the probe (13) in a circuit body (10) mounted in the waveguide (1), preferably in an area below the plane of the cap (3) so as to reduce perturbation of the filed. The probe is formed as a conductive track (13) on the circuit body (10), for example as a transmission line coupling to the electric field and preferably located at the front surface (18) of the body (10) or as a current loop extending on a side wall of the body (10) and coupling to the magnetic field.
REFERENCES:
patent: 3878480 (1975-04-01), Hulderman et al.
patent: 3882419 (1975-05-06), Swartz et al.
patent: 4222014 (1980-09-01), Ondria
Grimm Siegfried H.
Lobato Emmanuel J.
U.S. Philips Corp.
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