Second Generation Applications of Other Types of Current Conveyors in Realizing Synthetic Impedances - Current Conveyors: Variants, Applications and Hardware Implementations - page 467

Fig. 14.9 Simulation of FI,
FC, FDNR and admittance
converter proposed by
Minaei et al. (Adapted from
[ 21 ] © 2006 Springer)

I 1

z−

x

V 1

DO-CCII
z

y

+

y

z−

Y 2

DO-CCII

Y 1

x

z +

Y 3

I 2

V 2

connected at the terminal -X; no capacitors are ever connected at the X-terminals of
the DO-CCIIs, which make the circuit highly suitable for high frequency operation.

14.9 A General Circuit for Converting a Grounded
Immittance into Floating Immittance

A general structure for converting a grounded admittance into a floating admittance
was proposed by Yuce et al. [ 20 ] employing one DO-CCII, one CCII-, one CCII
+ and two passive elements which is shown in Fig. 14.10 . In general, the input
admittance function of a grounded circuit can be expressed as:

a m s m a m 1 s m 1

þ þ ... a 1 s þ a 0

y g ¼ ð 14 : 15 Þ

b n s n þ b n 1 s n 1 þ ... b 1 s þ b 0

where m and n are arbitrary integer numbers, m 0. Assuming ideal

CCIIs, a routine circuit analysis of this circuit gives the following short circuit
admittance matrix:

0 and n

y g

y 2
y 1

1 1 1 1

½ ¼ Y ¼ k y g ð 14 : 16 Þ

11 11

R 1

where k

R 2 is a multiplier constant for floating immittance converter. In the
circuit of Fig. 14.10 , if CCII- and CCII + are interchanged, the value of k will be
negative.
A synthetic FI can be realized if we select y 1 ¼

¼

sC 1 ,y 2 ¼ 1/R 2 and y g ¼ 1/R g