Theoretical analysis of the varactor tuning bandwidth characteristics of single and two-coupled resonant circuits with practical recommendations is presented. Highly linear octave-band operation was found to be possible using hyperabrupt varactors in two-coupled resonant circuits. Such a simple analytic approach is useful for practical wideband linear transistor VCO design.
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References
1.
BushnellT. R. and IsaacsA. T., ‘Wideband varactor-tuned solid-state sources to 20 GHz’, Microwave J., 16, 45–48 (1973)
2.
BeachR., ‘High speed linear oscillators’, Microwave J., 21, 59–65 (1978)
3.
ShipowF., ‘Linearity in solid state microwave voltage tuned oscillators’, Microwave J., 36, 120–138 (1983)
4.
BoydD. A., ‘VCO techniques for EW systems’, Microwave J., 31, 129–136 (1988)
5.
PetersonD. F., ‘Varactor properties for wide-band linear-tuning microwave VCOs’, IEEE Trans. Microwave Theory Techn., MTT-28, 110–118 (1980)
6.
MoysenkoA. E. and BarratC. A., ‘Computer aided design and manufacture of GaAs hyperabrupt varactors’, Microwave J., 25, 99–103 (1982)
