Title :
A Millimeter-Wave Gunn-Oscillator, Tunable with a Barium-Ferrite Sphere
Author_Institution :
Philips GmbH Forschungslaboratorium Hamburg, D-2000 Hamburg 54, FRG
Abstract :
First results of a 65 GHz barium-ferrite tuned Gunn-oscillator are reported, similar to the YIG-sweepers. Electronic tuning is accomplished by a single crystal barium-ferrite sphere coupled to the image line oscillator circuit. The high internal field of the ferrite considerably reduces the external magnetic field required for ferrimagnetic resonance at mm-wave frequencies. The new mm-wave oscillator design has the potential for wide tuning ranges and good noise performance.
Keywords :
Circuit optimization; Coupling circuits; Ferrimagnetic materials; Ferrites; Magnetic fields; Magnetic resonance imaging; Millimeter wave circuits; Oscillators; Resonant frequency; Tunable circuits and devices;
Conference_Titel :
Microwave Conference, 1979. 9th European
Conference_Location :
Brighton, UK
DOI :
10.1109/EUMA.1979.332645
