User-definable low cost, low noise, and phase hit insensitive multi-octave-band tunable oscillator
AssigneeSynergy Microwave Corporation
InventorsUlrich L. Rohde, Ajay Kumar Poddar, Klaus Juergen Schoepf, Parimal Patel
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Abstract
An aspect of the present invention is a voltage controlled oscillator that provides multi octave band tenability. The oscillator preferably includes one or more multi planar resonators which allow it to be implemented in integrated circuit form. Oscillators implemented in accordance with the aspect of the present invention provide as wide a tuning range as the YIG based resonators but are much more compact and efficient. Therefore, they are amenable to implementation in integrated circuits and suited for adaptation in third and future generation wireless devices.
Claims13
An oscillator operable at an oscillating frequency, comprising:
- a transistor having base, emitter and collector terminals;
- a multi-mode coupled resonator coupled across the base and collector terminals through a dynamically tunable capacitive element;
- and
- a slow-wave coupled resonator and a progressive-wave coupled resonator coupled in series to the collector terminal.
A communication device, comprising:
- a module for transmitting information;
- and
- a multi-octave band tunable oscillator coupled to the module, the tunable oscillator comprising,
- a bipolar transistor having base, collector and emitter terminals;
- a plurality of planar resonators electromagnetically coupled to each other and to the transistor;
- an active bias network coupled to the transistor and operable to provide a substantially constant bias voltage to the transistor;
- wherein the plurality of resonators include a multi-mode coupled resonator coupled across the base and collector terminals of the transistor through a dynamically tunable capacitive element, and include a slow-wave coupled resonator and a progressive-wave coupled resonator coupled in series to the collector terminal.
Dependencies are inferred from the claim text.