scholarly journals New Single VDCC-based Explicit Current- Mode SRCO Employing All Grounded Passive Components

2014 ◽  
Vol 18 (2) ◽  
pp. 81 ◽  
Author(s):  
Dinesh Prasad ◽  
D. R. Bhaskar ◽  
M. Srivastava
Keyword(s):  
Process Model ◽  
Current Mode ◽  
Model Parameters ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Quadrature Oscillator ◽  
Sinusoidal Oscillator ◽  
Low Pass ◽  
Band Pass

This paper proposes a new single resistancecontrolled sinusoidal oscillator (SRCO) which employs only onevoltage differencing current conveyor (VDCC), two groundedresistors and two grounded capacitors. The presented circuitconfiguration offers the following advantageous features (i)explicit current-mode output with independent control ofcondition of oscillation (CO) and frequency of oscillation (FO) (ii)low active and passive sensitivities and (iii) a very good frequencystability. The proposed structure can also be configured as (a)trans-admittance low pass filter and band pass filter and (b)quadrature oscillator. The validity of the proposed SRCO,quadrature oscillator and trans-admittance low pass filter andband pass filter has been verified by PSPICE simulations usingTSMC CMOS 0.18μm process model parameters.

scholarly journals High-Performance RF Balanced Microstrip Mixer Configuration for Cryogenic and Room Temperatures

Electronics ◽  
2021 ◽  
Vol 11 (1) ◽  
pp. 102
Author(s):  
Noy Citron ◽  
Eldad Holdengreber ◽  
Oz Sorkin ◽  
Shmuel E. Schacham ◽  
Eliyahu Farber
Keyword(s):  
High Performance ◽  
Schottky Diodes ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Noise Rejection ◽  
Low Pass ◽  
Hybrid Coupler ◽  
Band Pass ◽  
Simulation Results

A high-performance S-band down-conversion microstrip mixer, for operation from 77 K to 300 K, is described. The balanced mixer combines a 90 degree hybrid coupler, two Schottky diodes, a band pass filter, and a low pass filter. The coupler phase shift drastically improves noise rejection. The circuit was implemented according to the configuration obtained from extensive simulation results based on electromagnetic analysis. The experimental results agreed well with the simulation results, showing a maximum measured insertion loss of 0.4 dB at 2 GHz. The microstrip mixer can be easily adjusted to different frequency ranges, up to about 50 GHz, through the proper choice of microstrip configuration. This novel S-band cryogenic mixer, implemented without resorting to special components, shows a very high performance at liquid nitrogen temperatures, making this mixer very suitable for high-temperature superconductive applications, such as front-ends.

scholarly journals Simple Simulated Inductor, Low-Pass/Band-Pass Filter and Sinusoidal Oscillator Using OTRA

2016 ◽  
Vol 07 (03) ◽  
pp. 83-99 ◽  
Author(s):  
Raj Senani ◽  
Abdhesh Kumar Singh ◽  
Ashish Gupta ◽  
Data Ram Bhaskar
Keyword(s):  
Pass Band ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Sinusoidal Oscillator ◽  
Low Pass ◽  
Band Pass

scholarly journals CMOS CDBA-Based Inverse Filter Structure

2020 ◽  
Vol 9 (3) ◽  
pp. 2226-2231
Keyword(s):  
Cmos Technology ◽  
Experimental Results ◽  
Band Pass Filter ◽  
Inverse Filter ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Filter Structure ◽  
Low Pass ◽  
Band Pass ◽  
High Pass

This paper presents a voltage-mode(VM) tunable multifunction inverse filter configuration employing current differencing buffered amplifiers (CDBA). The presented structure utilizes two CDBAs, two/three capacitors and four/five resistors to realize inverse low pass filter (ILPF), inverse high pass filter (IHPF), inverse band pass filter (IBPF), and inverse band reject filter(IBRF) from the same circuit topology by suitable selection(s) of the branch admittances(s). PSPICE simulations have been performed with 0.18µm TSMC CMOS technology to validate the theory. Some sample experimental results have also been provided using off-the-shelf IC AD844 based CDBA.

A NEW TUNABLE FLOATING CMOS FDNR AND ELLIPTIC FILTER APPLICATIONS

2010 ◽  
Vol 19 (08) ◽  
pp. 1641-1650 ◽  
Author(s):  
FIRAT KAÇAR
Keyword(s):  
Integrated Circuit ◽  
Current Mode ◽  
Band Pass Filter ◽  
Mos Transistors ◽  
Pass Filter ◽  
Elliptic Filter ◽  
Low Pass ◽  
Band Pass ◽  
Fifth Order ◽  
A Current

A new tunable CMOS FDNR circuit is proposed. The circuit is based on the transcapacitive gyrator approach with both transcapacitive stages realized by MOS transistors configuration. This FDNR element lends itself well to the design of low-pass ladder filters and its use will result in a more efficient integrated circuit implementation than filters that simulate floating inductors utilizing resistive gyrators. The applications of FDNR to realize a current-mode fifth-order elliptic filter and current mode sixth-order elliptic band-pass filter are given. The proposed FDNR is simulated using CMOS TSMC 0.35 μm technology. Simulation results are given to confirm the theoretical analysis.

scholarly journals Implementation of an Inductorless 5th Order Band-Pass Filter

2021 ◽  
Author(s):  
Ara Abdulsatar Assim Assim
Keyword(s):  
Communication Systems ◽  
Order Approximation ◽  
Design Procedure ◽  
Operational Amplifiers ◽  
Band Pass Filter ◽  
Analog Filter ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Low Pass ◽  
Band Pass

This paper demonstrates the design and implementation of an inductorless analog band-pass filter (BPF). Band-pass filters are widely used in communication systems, wireless transceivers and audio systems, they only pass signals within a desired frequency range. The principles mentioned in this article can be generalized to design any analog filter regardless of its order, approximation and prototype. The design procedure can be broken down into three main parts, first of all, a passive low-pass filter (LPF) is implemented, then the passive LPF is converted into a passive BPF. Finally, the passive BPF is transformed into an active BPF by adding operational amplifiers. The active BPF is then modified into two different topologies, the first in which the inductors are replaced with simulated- inductors (gyrators), while in the second topology, less operational amplifiers are used. <br>

scholarly journals QIM - Based Audio Watermarking with Combination Technique of DCT-QR-CPT

2019 ◽  
Vol 7 (1) ◽  
pp. 112 ◽  
Author(s):  
RENDY DWI RENDRAGRAHA ◽  
GELAR BUDIMAN ◽  
IRMA SAFITRI
Keyword(s):  
Signal To Noise Ratio ◽  
Audio Watermarking ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Opinion Score ◽  
Low Pass ◽  
Band Pass ◽  
Speed Change ◽  
Index Modulation

ABSTRAKAudio watermarking adalah teknik memasukkan informasi ke dalam file audio dan untuk melindungi hak cipta data digital dari distribusi ilegal. Makalah ini memperkenalkan audio stereo watermarking berdasarkan Quantization Index Modulation (QIM) dengan teknik gabungan Discrete Cosine Transform (DCT) - QRCartesian Polar Transform (CPT). Host audio dibagi menjadi beberapa frame, selanjutnya setiap frame ditransformasi oleh DCT, kemudian output DCT diuraikan menjadi matriks orthogonal dan matriks segitiga menggunakan metode QR. Selanjutnya, CPT mengubah dua koefisien kartesian dari matriks segitiga (R) pada posisi (1,1) dan (2,2) menjadi koefisien polar. Setelah itu, penyisipan dilakukan pada koefisien polar oleh QIM. Hasil simulasi menunjukkan bahwa imperseptibilitas audio terwatermark berkualitas baik dengan Signal to Noise Ratio (SNR)> 20, Mean Opinion Score (MOS)> 4 dan tahan terhadap serangan seperti Low Pass Filter (LPF) dan Band Pass Filter (BPF) dengan cut off 25-6k, resampling, Linear Speed Change (LSC) dan MP3 Compression dengan rate diatas 64 kbps.Kata kunci: Audio Watermarking, CPT, DCT, QIM, QR ABSTRACTAudio watermarking is a technique for inserting information into an audio file and to protect the copyright of digital data from illegal distribution. This paper introduces a stereo audio watermarking based on Quantization Index Modulation (QIM) with combined technique Discrete Cosine Transform (DCT) – QR – Cartesian Polar Transform (CPT). Each frame of a host audio is transformed by DCT, then DCT output is decomposed using QR method. Next, CPT transform two cartesian coefficients from triangular matrix (R) in position (1,1) and (2,2) to polar coefficients. After that, embedding is executed on polar coefficients by QIM. The simulation result shows that the imperceptibility is good with Signal to Noise Ratio (SNR)>20, Mean Opinion Score (MOS)>4 and it is robust against attacks such as Low Pass Filter (LPF) and Band Pass Filter (BPF) with cut off 25-6k, Resampling, Linear Speed Change and MP3 Compression with rate 64 kbps and above. Keywords: Audio Watermarking, CPT, DCT, QIM, QR

Self optical gain in multilayered silicon-carbon heterostructures: A capacitive active band-pass filter model

2011 ◽  
Vol 1321 ◽  
Author(s):  
M. A. Vieira ◽  
M. Vieira ◽  
P. Louro ◽  
M. Fernandes ◽  
J. Costa ◽  
...  
Keyword(s):  
Optical Gain ◽  
Nonlinear Dependence ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Filter Model ◽  
Active Band ◽  
Low Pass ◽  
Band Pass ◽  
State Variable Filter

ABSTRACTThis paper reports results on the use of a pi’n/pin a-SiC:H heterostructure as an active band-pass filter transfer function whose operation depends on the wavelength of the trigger light, on the applied voltage and on the wavelength of the additional optical bias.Results show that the device combines the demultiplexing operation with the simultaneous photodetection and self amplification of the signal. Experimental and simulated results show that the output signal has a strong nonlinear dependence on the light absorption profile. The device, modeled by a simple circuit with variable capacitors and interconnected phototransistors through a resistor, is a current-controlled device. It uses a changing capacitance to control the power delivered to the load acting as a state variable filter circuit. It combines the properties of active high-pass and low-pass filter sections into a capacitive active band-pass filter.

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