A New Polyphase Current-Mode Filter Using Digitally-Programmable CCCII

Al-Shahrani, Sa’ad Muhammad; Al-Gahtani, M.

doi:10.1109/icm.2006.373287

Cited by 6 publications

(5 citation statements)

References 9 publications

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“…The resulting fully differential circuit is illustrated in Fig.5.b [7] [10]. In this case the transconductance G f is equal to the reciprocal of the R f resistance.…”

Section: B Linear Frequency Transformation Of Grounded Capacitorsmentioning

confidence: 98%

“…This leads to the idea that, for a complex polyphase implementation, it is sufficient to develop the linear frequency shifting circuitry for these two configurations. The result is a generalized synthesis method for complex band pass filters, which can be used for transforming any low pass prototype based on open loop active elements [5][9] [10].…”

Section: A Low Pass To Band Pass Frequency Transformationsmentioning

confidence: 99%

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A generalized approach to complex filter design with open loop active cells

Csipkes

Fernandez-Canque

et al. 2010

2010 12th International Conference on Optimization of Electrical and Electronic Equipment

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This paper describes a generalized approach to complex polyphase filter designs based on open loop active elements such as operational transconductance amplifiers or current conveyors. The low pass to band pass linear frequency transformation is performed on capacitors at circuit level, allowing a high degree of generality regardless of the employed synthesis method, voltage or current mode operation and the type of the fundamental open-loop building block. The equations and the corresponding implementations are determined for grounded and for floating capacitors, identified as the two connections typically used in high frequency integrated filters. The presented circuits support all-pole approximations and arbitrary transmission zeros of any order.

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“…The resulting fully differential circuit is illustrated in Fig.5.b [7] [10]. In this case the transconductance G f is equal to the reciprocal of the R f resistance.…”

Section: B Linear Frequency Transformation Of Grounded Capacitorsmentioning

confidence: 98%

Section: A Low Pass To Band Pass Frequency Transformationsmentioning

confidence: 99%

A generalized approach to complex filter design with open loop active cells

Csipkes

Fernandez-Canque

et al. 2010

2010 12th International Conference on Optimization of Electrical and Electronic Equipment

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“…Inclusion of Rx was shown in the particular device, in order to balance the adjustment of the voltage relationship between node X and node Y, thereby imparting tunability to the device. Some of the promising features of the CCCII are viz [22][23][24][25][26]. 1.…”

mentioning

confidence: 99%

A novel square wave generator based on the translinear circuit scheme of second generation current controlled current conveyor-CCCII

et al. 2019

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A robust square wave generator employing a sole capacitor and two resistors has been presented in this study. Low power as well as popular translinear circuit scheme of Second generation current controlled current conveyor-CCCII has been taken as an active element to implement the proposed square wave generator. CCCII inhibits promising features like availability of three mutually independently and electronically adjustable parameters corresponding transconductance (g m), intrinsic resistance (r) of the current input terminal and current gain between two terminals) that are very prevalent for control applications accepted currently. The operating frequency of the proposed model has been analyzed with respect to the passive components present there, with no exposure of output signals to the thermal voltage (V T). Electrical/Device properties (like Noise, Threshold, area etc.) of the proposed circuit have also been discussed in this work. The simulation work was carried out on Synopsis Hspice tool (v-2008.03) from Avant. Satisfying results with anticipation of theoretical and simulated results, including precision (consistency assessment) with Pareto analysis (Ist order Best Test flavored by Decision making analysis) were observed during the study. The 45 nm BSIM CMOS modelling parameters were adopted to prove the theory. The elementary purpose of using such parameters is to maximize the circuit drive and lowering the leakage current. Another purpose of using these modelling parameters is to enhance the realization of the proposed circuit in the form of chip die and further get it fabricated in custom Integrated circuit(IC) form, from a Standard local foundry. Maximum power consumption of the circuit is 600 µW, with ± 1 V rail to rail operating voltages. Keywords Square wave generators • CCCII based novel MOS devices • Monte Carlo analysis • Voltage and current mode circuits • Low power and low voltage CMOS circuits

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“…Polyphase filters, known as complex filters, are widely used for image rejection [8,9]. In order to cascade conveniently, active polyphase filters rather than the passive polyphase filters are widely used [10]. Another advantage is that the active polyphase filter is more suitable for monolithic integration [11].…”

Section: Introductionmentioning

confidence: 99%

“…So, design of the firstorder polyphase filter is pivotal. Recently, many kinds of active components are utilized to design polyphase filters, such as operational amplifiers (OPAMP) [6,12], operational transconductance amplifiers (OTA) [13][14][15][16][17], current mirrors [18,19], second generation current conveyor (CCII) [1,10,[20][21][22], current followers (CF) [23], current feedback operational amplifiers (CFOA) [24][25][26], and current differencing buffered amplifiers (CDBA) [11]. However, polyphase filters based on OPAMP have some disadvantages, such as the limited bandwidth due to the constant gain-bandwidth product and the limited slew rate.…”

Section: Introductionmentioning

confidence: 99%

A Novel Current–Mode High–Frequency Polyphase Filter using Multi–Output Current Differencing Transconductance Amplifiers

Peng

Wang

Tian

2016

Journal of Electrical Engineering

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This paper introduces a novel polyphase filter working at high centre frequency using multi-output current differencing transconductance amplifiers (MOCDTAs). The MOCDTA possesses characteristics of low input impedance, high output impedance, wide work frequency and linearly adjustable transconductance. The proposed filter consists of two MOCDTAs, two grounded capacitors, and no resistors. The features of low input impedance and high output impedance make it suitable for cascade. The bandwidth and centre frequency could be adjusted independently by external bias voltage V C and V Ca . The image rejection ratio (IRR) could reach 31.6 dB at the centre frequency of 114 MHz, and its bandwidth could be 11.1 MHz. Besides, the centre frequency could be tuned from 38 MHz to 150 MHz with bandwidth of 20.1 MHz. Simulation results which verify the theory are included.

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A New Polyphase Current-Mode Filter Using Digitally-Programmable CCCII

Cited by 6 publications

References 9 publications

A generalized approach to complex filter design with open loop active cells

A generalized approach to complex filter design with open loop active cells

A novel square wave generator based on the translinear circuit scheme of second generation current controlled current conveyor-CCCII

A Novel Current–Mode High–Frequency Polyphase Filter using Multi–Output Current Differencing Transconductance Amplifiers

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