Current-Mode First-Order Universal Filter and its Voltage-Mode Transformation

Abstract

This paper deals with the realization of current-mode first-order universal filter based on multiple output second generation current conveyor (MO-CCII). Two MO-CCIIs, one resistor and one capacitor are used in the circuit realization. The proposed work includes additional features such as ease of cascadability, easily implementable in modern integrated circuit technology and no requirement of passive components matching condition. The additional beauty of the proposed filter structure is that all three responses can also be realized by interchanging the positions of passive components as well. Moreover, a possible transformation of the proposed current-mode type universal filter into a voltage-mode type universal filter using network transpose method is also explored. The possibility of mode transformation further expands the scope of proposed idea. The theoretical aspects are verified using cadence VIRTUOSO simulation results.

Single Commercially Available IC-Based Electronically Controllable Voltage-Mode First-Order Multifunction Filter with Complete Standard Functions and Low Output Impedance

“…The universal or multifunction first-order filters that perform multiple filtering functions in the same structure have been proposed in . Most universal first-order filters [21,23,24,26,[29][30][31] (Figure 1), (Figure 2) [34][35][36][37]39,41,45] are realized in current-mode (CM) configuration, which can avoid the use of additional summing or subtracting circuits. With this feature, the current-mode circuit enjoys a compact structure.…”

“…Transresistance-mode (RM) and transconductance-mode (TM) universal first order filters are reported in [22,28,31] (Figure 2), respectively. The universal first-order filters in voltage-mode (VM) configuration are proposed in [23,25,27,32,33,38,40,[42][43][44]. The comparison between the proposed first-order universal filter and the previous ones presented in is summarized in Table 1.…”

“…Most of the proposed universal first-order filters are emphasized for the on-chip realization of both CMOS [21][22][23][24][25][26][27][28][29][30][31][32][34][35][36]40,41,45] or BJT [33,37,39] technology. As stated above, the implementation of an on-chip circuit is quite costly.…”

Resistorless Realization of First‐Order Current Mode Universal Filter

“…Nowadays, researchers have also shown massive interest in the designing of universal filter structures. In existing first-order filter designs (Abaci & Yuce, 2018;Arslanalp, 2011;Ayten et al, 2014;Beg et al, 2011;Chaturvedi & Kumar, 2018b;Chaturvedi & Mohan, 2015a;Chaturvedi et al, 2020;Horng, 2010;Kumar & Chaturvedi, 2016;Kumar & Paul, 2017;Maheshwari, 2007a;Maheshwari, 2007b;Maheshwari, 2008;Maheshwari, 2018;Maheshwari & Khan, 2001;Maheshwari & Khan, 2003;Maheshwari et al, 2006;Mohan, 2013;Mohan et al, 2013;Safari et al, 2017;Yuce & Minaei, 2016;Yuce et al, 2013), a universal filter circuit is one which generates low-pass, high-pass, and all-pass responses within a single circuit. Contemporary research works (Abaci & Yuce, 2018;Arslanalp, 2011;Beg et al, 2011;Chaturvedi et al, 2020;Horng, 2010;Kumar & Paul, 2017;Maheshwari, 2008;Maheshwari & Khan, 2001;Maheshwari et al, 2006;Safari et al, 2017;Yuce & Minaei, 2016;Yuce et al, 2013) present diverse first-order universal filter structures and aim to achieve some good signal processing attributes as follows:…”

“…Nowadays, researchers have also shown massive interest in the designing of universal filter structures. In existing first‐order filter designs (Abaci & Yuce, ; Arslanalp, 2011; Ayten et al, ; Beg et al, ; Chaturvedi & Kumar, ; Chaturvedi & Kumar, ; Chaturvedi & Mohan, ; Chaturvedi et al, ; Chaturvedi et al, ; Horng, ; Kumar & Chaturvedi, ; Kumar & Paul, ; Maheshwari, ; Maheshwari, ; Maheshwari, ; Maheshwari, ; Maheshwari & Khan, ; Maheshwari & Khan, ; Maheshwari et al, ; Mohan, ; Mohan et al, ; Safari et al, ; Yuce & Minaei, ; Yuce et al, ), a universal filter circuit is one which generates low‐pass, high‐pass, and all‐pass responses within a single circuit. Contemporary research works (Abaci & Yuce, ; Arslanalp, 2011; Beg et al, ; Chaturvedi & Kumar, ; Chaturvedi et al, ; Chaturvedi et al, ; Horng, ; Kumar & Paul, ; Maheshwari, ; Maheshwari & Khan, ; Maheshwari et al, ; Safari et al, ; Yuce & Minaei, ; Yuce et al, ) present diverse first‐order universal filter structures and aim to achieve some good signal processing attributes as follows: Single ABB based realization Use of minimum number of resistors Use of minimum number of capacitors Use of grounded passive components Cascadability support Higher operating frequency Lower supply voltages Lesser power dissipation. …”