Oscillators – Automatic frequency stabilization using a phase or frequency... – Oscillator with distributed parameter-type discriminator
Patent
1987-08-03
1988-10-25
Grimm, Siegfried H.
Oscillators
Automatic frequency stabilization using a phase or frequency...
Oscillator with distributed parameter-type discriminator
307519, 328140, 333235, H03L 704
Patent
active
047806915
ABSTRACT:
A frequency discriminator (1) stabilizes a voltage controlled oscillator (5), particularly one operating at microwave frequencies. A single dielectric resonator (2), typically positioned within a housing (8), is excited by an r.f. input (30). The dielectric resonator (2) generates in response to the excitation first and second orthogonal modes of r.f. electromagnetic energy at slightly different frequencies. The two orthogonal modes are converted to d.c. output signals (39, 40) of opposite polarity and substantially the same magnitude, e.g., by diodes (35, 36). Frequency offsets are obtained by tuning screws (43, 44) and/or by changing the amount of dielectric (2) in the path of the characterizing vector corresponding to the mode being frequency-offset.
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Ford Aerospace & Communications Corporation
Grimm Siegfried H.
Radlo Edward J.
Zerschling Keith L.
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