New Voltage Mode Universal Filters Using Only Two CDBAs

Table 1

Results of the analysis of the proposed VMUF configurations.

Parameters/functions	Circuit 1	Circuit 2
𝑉𝑜	𝑠^2𝑉3−𝑠𝑉2/𝐶1𝑅3+𝑉1/𝐶1𝐶2𝑅2𝑅3𝑠^2+𝑠/𝐶1𝑅4+1/𝐶1𝐶2𝑅1𝑅3	𝑠^2𝑉3−𝑠𝑉2/𝐶1𝑅3+𝑉1/𝐶1𝐶2𝑅2𝑅3𝑠^2+2𝑠/𝐶1𝑅4+1/𝐶1𝐶2𝑅1𝑅3
For
LP	𝑉3=0,  𝑉2=0,  𝑉1=𝑉𝑖	𝑉3=0,  𝑉2=0,  𝑉1=𝑉𝑖
	𝐻0LP=𝑅1𝑅2	𝐻0LP=𝑅1𝑅2
HP	𝑉3=𝑉𝑖,𝑉2=0,𝑉1=0	𝑉3=𝑉𝑖,𝑉2=0,𝑉1=0
	𝐻0HP=1	𝐻0HP=1
BP	𝑉3=0,𝑉2=𝑉𝑖,𝑉1=0	𝑉3=0,𝑉2=𝑉𝑖,𝑉1=0
	𝐻0BP=−𝑅4𝑅3	𝐻0BP=−𝑅42𝑅3
BS	𝑉3=𝑉𝑖,𝑉2=0,𝑉1=𝑉𝑖	𝑉3=𝑉𝑖,𝑉2=0,𝑉1=𝑉𝑖
	𝑅1=𝑅2	𝑅1=𝑅2
	𝐻0BS=1	𝐻0BS=1
AP	𝑉3=𝑉2=𝑉1=𝑉𝑖	𝑉3=𝑉2=𝑉1=𝑉𝑖
	𝑅1=𝑅2,𝑅3=𝑅4	𝑅1=𝑅2,𝑅3=𝑅4/2
	𝐻0AP=1	𝐻0AP=1
𝜔𝑜	1𝐶1𝐶2𝑅1𝑅3	1𝐶1𝐶2𝑅1𝑅3
𝑄	𝑅4𝐶1𝐶2𝑅1𝑅3	𝑅42𝐶1𝐶2𝑅1𝑅3
BW	1𝐶1𝑅4	2𝐶1𝑅4