Proven procedures guide cavity VCO design
Abstract
The design of a high performance voltage-tuned cavity oscillator is discussed. The circuit is to be modeled with an equivalent inductance and capacitance. Close attention is to be given to the influence of cavity loading. Center frequency and impedance are computed on the basis of the model's L and C values. The last step is particularly important, since the size of a cavity-based oscillator, such as the Gunn/varactor version is directly related to operating frequency. Attention is given to the parallel L-C circuit representing the cavity, parameter relations concerning the height, higher-order TE modes, and effects of post inductance. The basic oscillator consists of a hollow cavity with metal walls, and diodes mounted on posts.
- Publication:
-
Microwaves
- Pub Date:
- May 1981
- Bibcode:
- 1981MicWa..20..123L
- Keywords:
-
- Cavity Resonators;
- Frequency Stability;
- Lc Circuits;
- Microwave Oscillators;
- Tuning;
- Voltage Regulators;
- Design Analysis;
- Electrical Impedance;
- Equivalent Circuits;
- Frequency Control;
- Frequency Shift;
- Gunn Diodes;
- Network Synthesis;
- Resonant Frequencies;
- Varactor Diodes;
- Electronics and Electrical Engineering