A BJT technology-based current-mode tunable all-pass filter

Arslanalp, Remzi; Yüce, Erkan

doi:10.1016/j.mejo.2009.02.008

Cited by 10 publications

(12 citation statements)

References 22 publications

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“…Literature survey shows that first‐order AP filters using second‐generation current conveyors (CCIIs) [1–9], current followers (CFs) [10], inverting CCIIs (ICCIIs) [11], differential voltage current conveyors (DVCCs) [12–14], dual‐X CCIIs (DX‐CCIIs) [15–20], extra‐X current controlled conveyors (EX‐CCCIIs) [21, 22], third‐generation current conveyors (CCIIIs) [23], dual‐X current conveyor transconductance amplifiers (DXCCTAs) [24, 25], current operational amplifiers (COAs) [26], MOS transistors [27], bipolar junction transistors (BJTs) [28, 29], operational transresistance amplifiers (OTRAs) [30], current differencing transconductance amplifiers (CDTAs) [31], voltage gain‐controlled modified current feedback operational amplifiers (VGC‐MCFOAs) [32] and so on have been reported so far.…”

Section: Introductionmentioning

confidence: 99%

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New mixed‐mode second‐generation voltage conveyor based first‐order all‐pass filter

Yüce

Safari

Mınaeı

et al. 2020

IET Circuits, Devices & Systems

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Section: Introductionmentioning

confidence: 99%

“…Only one of [32] is mixed‐mode (MM). Also, some AP filters [7, 8, 11, 13, 23, 25–28, 30, 31] include a floating capacitor that is not suitable for integrated circuit (IC) fabrication. Several AP filter configurations [9, 13, 15, 24, 27] use more than one capacitor; accordingly, they occupy large chip area in IC process.…”

Section: Introductionmentioning

confidence: 99%

New mixed‐mode second‐generation voltage conveyor based first‐order all‐pass filter

Yüce

Safari

Mınaeı

et al. 2020

IET Circuits, Devices & Systems

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“…It is a well known fact that an all-pass filter (phase shifter) topology like previously reported first-order signal processing units [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18] finds wide , which is suitable for high frequency applications, contains three CMOS transistors, a floating resistor for biasing purpose and a large coupling capacitor for dc isolation of the load. The circuit reported in 12 is a square-rootdomain CM filter which needs two identical bias currents.…”

Section: Introductionmentioning

confidence: 99%

Realization of First-Order Current-Mode Filters With Low Number of Mos Transistors

Yüce

Mınaeı

Herencsár

et al. 2013

J CIRCUIT SYST COMP

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In this paper, a new current-mode (CM) circuit for realizing all of the first-order filter responses is suggested. The proposed configuration contains low number of components, only two NMOS transistors both operating in saturation region, two capacitors and two resistors. Major advantages of the presented circuit are low voltage, low noise and high linearity. The proposed filter circuit can simultaneously provide both inverting and non-inverting first-order low-pass, high-pass and all-pass filter responses. Computer simulation results achieved through SPICE tool and experimental results are given as examples to demonstrate performance and effectiveness of the proposed topology.

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“…It should be noted that if terminal voltages are set to zero, v a = v b = 0, transistor currents are equal to dc current source, I o , resulting in terminal currents to be zero, i a = i b =0. [22,23] As in the previous analysis, consider the values of two current sources depicted in Fig. 4 are the same.…”

Section: Introductionmentioning

confidence: 99%

“…Also it is assumed that terminal currents are equal to zero. For CCGPR, the relationship of I o1 and I o2 is given in (22) and 23, respectively.…”

Section: Introductionmentioning

confidence: 99%

Low‐component count BJT technology‐based current‐controlled tunable resistors and their applications

Arslanalp

Yüce

Tola

2013

IET Circuits, Devices & Systems

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In this study, low-power and low-component count grounded and floating current-controlled tunable resistors are proposed. The validity of the proposed resistor circuits is demonstrated in two applications, second-order band-pass filter and negative inductor simulator circuit. To carry out the performance of the circuits, all the designed circuits are simulated through SPICE program by using real transistor models. Also, experimental results are included to confirm the theory. It is important to note that all the introduced circuit parameters and resistor values can be changed electronically by adjusting the values of dc control current sources only. Approximately four decades tunability range (from 34 Ω to 285 kΩ) and about 10 MHz bandwidth for the tunable resistors are achieved. In this tunability range, linear relationships between terminal currents and voltages are successfully obtained. 2 Proposed current-controlled grounded and floating positive resistors A symbolic representation of the CCR and its equivalent circuit [22, 23] are shown in Figs. 1a and 1b, respectively.

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A BJT technology-based current-mode tunable all-pass filter

Cited by 10 publications

References 22 publications

New mixed‐mode second‐generation voltage conveyor based first‐order all‐pass filter

New mixed‐mode second‐generation voltage conveyor based first‐order all‐pass filter

Realization of First-Order Current-Mode Filters With Low Number of Mos Transistors

Low‐component count BJT technology‐based current‐controlled tunable resistors and their applications

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