A dual mode wideband bipolar microwave transistor voltage-controlled oscillator design

✍ Scribed by Andrey V. Grebennikov

• Publisher: John Wiley and Sons
• Year: 1999
• Tongue: English
• Weight: 177 KB
• Volume: 9
• Category: Article
• ISSN: 1096-4290
• DOI: 10.1002/(sici)1099-047x(199909)9:5<424::aid-mmce7>3.0.co;2-n

✦ Synopsis

Results of the design of the microwave bipolar voltage-controlled oscillator ( ) VCO on coupled transmission lines, tuned by varactors in a wide frequency range, are presented. An opportunity of realization of VCO octave frequency bandwidth is shown in a common emitter bipolar transistor circuit configuration. The large-signal model for bipolar transistor is based on its small-signal Y-parameters and DC characteristics. Results of the theoretical analysis and the numerical calculations of the optimal circuit parameters and the tuning oscillator characteristics are given.