DV-EXCCCII-Based Electronically Tunable Voltage Mode All-Pass Filter

2021 ◽  
pp. 485-494
Author(s):  
Priyanka Singh ◽  
Vikrant Varshney ◽  
Ankur Kumar ◽  
Rajendra Kumar Nagaria
Keyword(s):  
Pass Filter ◽  
Voltage Mode ◽  
Electronically Tunable

scholarly journals Design and Experiment of Electronically Tunable Voltage-Mode Biquad and Output Current Amplitude Oscillator

2021 ◽  
Vol 11 (16) ◽  
pp. 7357
Author(s):  
San-Fu Wang ◽  
Hua-Pin Chen ◽  
Yitsen Ku ◽  
Fang-Yu Liu
Keyword(s):  
Communication Systems ◽  
Band Pass Filter ◽  
Output Current ◽  
Third Order ◽  
Pass Filter ◽  
Voltage Mode ◽  
The Third ◽  
Band Pass ◽  
Electronically Tunable ◽  
Electronically Controllable

This study presents an electronically tunable configuration for the design of a voltage-mode (VM) biquad with four input terminals and three output terminals. The proposed circuit employs four operational transconductance amplifiers (OTAs) and two grounded capacitors. Depending on the selections of the four input voltage signals, all the standard filtering functions can be realized. The proposed configuration simultaneously provides VM inverting band-pass, non-inverting low-pass, and non-inverting band-reject filtering functions without any component-matching choices. It offers the features of a resistorless structure, high-input impedance, electronic control of the pole frequency and quality factor, and low active and passive sensitivities. The measured power dissipation of the biquad is 0.96 W under 32 mA constant output current. The measured 1 dB power gain compression point of the output inverting band-pass filter is −7 dBm. The measured value of the third-order intercept point is 5.136 dBm, and the measured value of the third-order intermodulation distortion is −50.83 dBc. Moreover, the measured value of the spurious-free dynamic range is 53.49 dB, and the figure-of-merit of the biquad is 268.75 × 103. In addition, an electronically controllable quadrature oscillator (QO) with amplitude of output current can be realized using the proposed biquad. The proposed electronically controllable QO can provide an amplitude modulation signal or an amplitude shift keying signal, and is widely applied in signal processing systems and electronic communication systems. PSpice simulations and experimental results are accomplished.

scholarly journals Design of Voltage Mode Electronically Tunable First Order All Pass Filter in ±0.7 V 16 nm CNFET Technology

Electronics ◽  
2019 ◽  
Vol 8 (1) ◽  
pp. 95 ◽  
Author(s):  
Muhammad Masud ◽  
Abu A’ain ◽  
Iqbal Khan ◽  
Nasir Husin
Keyword(s):  
Low Voltage ◽  
Wide Frequency Range ◽  
Passive Components ◽  
Pass Filter ◽  
First Order ◽  
Voltage Mode ◽  
Tunable Range ◽  
Low Voltage Operation ◽  
Unity Gain ◽  
Electronically Tunable

A novel voltage mode first order active only tuneable all pass filter (AOTAPF) circuit configuration is presented. The AOTAPF has been designed using ±0.7 V, 16 nm carbon nanotube field effect transistor (CNFET) Technology. The circuit uses CNFET based varactor and unity gain inverting amplifier (UGIA). The presented AOTAPF is realized with three N-type CNFETs and without any external passive components. It is to be noted that the realized circuit uses only two CNFETs between its supply-rails and thus, suitable for low-voltage operation. The electronic tunability is achieved by varying the voltage controlled capacitance of the employed CNFET varactor. By altering the varactor tuning voltage, a wide tunable range of pole frequency between 34.2 GHz to 56.9 GHz is achieved. The proposed circuit does not need any matching constraint and is suitable for multi-GHz frequency applications. The presented AOTAPF performance is substantiated with HSPICE simulation program for 16 nm technology-node, using the well-known Stanford CNFET model. AOTAPF simulation results verify the theory for a wide frequency-range.

Voltage Mode Second Order Notch/All - Pass Filter Realization Using OTRA

2016 ◽  
Vol 6 (2) ◽  
pp. 22
Author(s):  
ANURAG RASHIKA ◽  
PANDEY NEETA ◽  
CHANDRA ROHAN ◽  
PANDEY RAJESHWARI ◽  
◽  
...  
Keyword(s):  
Second Order ◽  
Pass Filter ◽  
Voltage Mode

scholarly journals New Double Current Controlled CFA (DCC–CFA) Based Voltage–Mode Oscillator with Independent Electronic Control of Oscillation Condition and Frequency

2013 ◽  
Vol 64 (2) ◽  
pp. 65-75 ◽  
Author(s):  
Roman Šotner ◽  
Norbert Herencsár ◽  
Jan Jeřábek ◽  
Radek Dvořák ◽  
Aslihan Kartci ◽  
...  
Keyword(s):  
Integrated Circuit ◽  
Active Element ◽  
Frequency Tuning ◽  
Current Gain ◽  
Intrinsic Resistance ◽  
Current Feedback ◽  
Voltage Mode ◽  
Simultaneous Control ◽  
Bicmos Technology ◽  
Electronically Tunable

In this paper, a new electronically tunable quadrature oscillator (ETQO) based on two modified versions of current feedback amplifiers (CFAs), the so called double current controlled CFA (DCC-CFAs) is presented. The frequency of oscillation (FO) of the proposed voltage-mode (VM) ETQO is electronically adjustable by current gain or by varying the intrinsic resistance of the X terminal of the active element used. The condition of oscillation (CO) is adjustable by current gain independently with respect to frequency of oscillation. Simultaneous control of current gain and intrinsic resistance allows linear control of FO and provides extension of frequency tuning range. In the proposed circuit all the capacitors are grounded. The use of only grounded capacitors makes the proposed circuit ideal for integrated circuit implementation. The presented active element realized by using BiCMOS technology and the behavior of proposed circuit are discussed in details. The theoretical results are verified by SPICE simulations based on CMOS ON-Semi C5 0.5 μm and bipolar ultra high frequency transistor arrays Intersil HFA 3096 process parameters.

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