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http://localhost:80/xmlui/handle/123456789/5942| Title: | CDBA- Based Electronically Tunable Filters and Sinusoid Quadrature Oscillator |
| Other Titles: | (In) JOURNAL OF TELECOMMUNICATIONS |
| Authors: | Nandy, R. venkateswaran, P. Das, Soumik |
| Keywords: | CDBA Electronic tuning Quadrature oscillator Selective filters |
| Issue Date: | Aug-2010 |
| Series/Report no.: | Vol : 4;No : 1 |
| Abstract: | New Current Differencing Buffered Amplifier (CDBA) - based multifilter function topologies are presented. Electronic tuning is derived by appropriate insertion of a multiplier element whose control voltage (Vc) tunes the select frequency in a range of 200KHz ≤ fo ≤ 1MHz. The circuits also realize a voltage controlled quadrature oscillator (VCQO) with suitable design. Analysis on the effects of the CDBA-parasitic components indicates low active-sensitivity and good frequency-stability of the oscillator. The multifunction performance has been verified both with PSPICE macromodel simulation and by hardware circuit tests. A novel method of measuring the oscillator frequency-tuning error (Δf) based on the Nyquist plot is presented that shows Δ f ≈ 2% |
| URI: | http://172.16.0.4:8085/heritage/handle/123456789/5942 |
| Appears in Collections: | Applied Electronics and Instrumentation Engineering (Publications ) |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| CDBA-BASED ELECTRONICAL.pdf | 896.08 kB | Adobe PDF | View/Open |
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