Hardware Reference
In-Depth Information
Concluding Remarks
This chapter has focused on some selected sinusoidal oscillator configura-
tions using a large variety of extended CC types. For brevity, only a few
significant circuits have been included from amongst a large number avail-
able as reflected in the list of references [ 1 - 52 ] at the end of this chapter. For
further reading, still more additional references are provided for the interested
readers in Appendix at the end of this monograph.
The inclusion of various circuits in this chapter was guided by consider-
ations such as employment of grounded capacitors, employment of AGPEs,
availability of explicit voltage and current outputs from low output imped-
ance and high output impedance terminals respectively, availability of QOs in
VM, CM or dual-mode etc. It must be emphasized again that although none of
these circuits can be actually used in practice due to the non-availability of the
employed building blocks as off-the-shelf ICs, however, since all the building
blocks employed are implementable in bipolar and CMOS technologies, the
described circuits which offer very interesting features should provide good
enough motivation for the IC designers to think and work in a direction to
make these exciting varieties of CCs available as stand-alone ICs. Alterna-
tively, the described topologies can also be employed as an integratable part
of the complete system-on-chip which requires a sinusoidal oscillator to be
integrated on the same IC chip using bipolar/CMOS technology.
References
1. Celma S, Martinez PA (1995) Transformation of sinusoidal oscillators using universal active
elements. IEE Proc Circ Devices Syst 142:353-356
2. Celma S, Martinez PA (1995) On the limit cycle stability in current-mode oscillators. Int J
Electron 79:163-169
3. Soliman AM (1998) Generalized voltage and current conveyors: practical realizations using
CCII. IEICE Trans Fundam E-81:973-975
4. Abuelma
atti MT, Al-Qahtani MA (1998) A new current-controlled multiphase sinusoidal
oscillator using translinear current conveyors. IEEE Trans Circ Syst-II 45:881-885
5. Soliman AM (1998) Current mode CCII oscillators using grounded capacitors and resistors. Int
J Circ Theor Appl 26:431-438
6. Abuelma
'
atti MT, Tasadduq NA (1998) A novel current-controlled oscillator using translinear
current conveyors. Frequenz 52:123-124
7. Gupta SS, Senani R (2000) Grounded-capacitor current-mode SRCO-novel application of
DVCCC. Electron Lett 36:195-196
8. Papazoglou CA, Karybakas CA (2000) An electronically tunable sinusoidal oscillator suitable
for high frequencies operation based on a single dual-output vriable-gain CCII. Analog Integr
Circ Sig Process 23:31-44
9. Gupta SS, Senani R (2001) Comment: CMOS differential difference current conveyors and
their applications. IEE Proc Circ Devices Syst 148:335-336
10. Toker A, Kuntman H, Cicekoglu O, Discigil M (2002) New oscillator topologies using
inverting second-generation current conveyors. Turk J Electr Eng 10:119-129
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