The Design of the Sinusoidal Signal Generator

2014 ◽  
Vol 981 ◽  
pp. 116-120
Author(s):  
Guo Dong Sun ◽  
Ming Xin Song ◽  
Shan Shan Wang ◽  
Yu Zhao
Keyword(s):  
High Performance ◽  
Sine Wave ◽  
Signal Generator ◽  
Sinusoidal Signal ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Generator Circuit ◽  
Performance Accuracy ◽  
Low Pass ◽  
Sine Signal

Sinusoidal signal generator is common electronic equipment. In this paper, the writer designed a kind of integrated CMOS sine signal generator, which generator uses wien bridge oscillation circuit.This generator circuit mainly constitutes by amplifier, leveled and low-pass filter circuit, which uses Cadence software to simulate and analysis its amplification circuit, in order to get a sine wave which has high performance accuracy and stability. Through simulating this generator, we can get a kind of sine wave which includes the frequency as the 1.109 kHz, the center potential as 2.5V, the amplitude as 2.58V, distortion is less than 2%, and this sine wave is more practical for the lower voltage supply system.  

Design of a Sine Sweeping Constant Current Source Based FPGA and DDS

2014 ◽  
Vol 936 ◽  
pp. 2230-2234
Author(s):  
Ya Ping Yu ◽  
Hui Zhao ◽  
Yuan Liu ◽  
Ren Jie Yang ◽  
Gui Mei Dong ◽  
...  
Keyword(s):  
Frequency Control ◽  
Current Source ◽  
Sine Wave ◽  
Constant Current ◽  
Constant Current Source ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Low Pass ◽  
Fpga Chip ◽  
Sine Wave Generator

This paper designed a range of 0.1 ~ 250 kHz sine wave sweeping constant current source, which sine wave generator based on FPGA chip and DDS technology, the desired sine wave frequency was obtained by controlling the frequency control words. Low-pass filter circuit was realized by using the LTC1560-1, conversion circuit from the voltage to the current was consisted of a Howland current pump. The constant current source shows a good spectral impedance purity and amplitude.

High Performance Microstrip Low Pass Filter for Wireless Communications

2017 ◽  
Vol 99 (1) ◽  
pp. 497-507 ◽  
Author(s):  
Saeed Roshani ◽  
Alireza Golestanifar ◽  
Amirhossein Ghaderi ◽  
Hesam Siahkamari ◽  
Derek Abbott
Keyword(s):  
Wireless Communications ◽  
High Performance ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Low Pass

scholarly journals Design and Implementation of High Performance PPSK demodulator in Biomedical Implant

2021 ◽  
Author(s):  
Hima Bindu Katikala ◽  
G.Ramana Murthy ◽  
Yatavakilla Amarendra Nath
Keyword(s):  
Low Power ◽  
Hearing Aids ◽  
Data Transmission ◽  
High Performance ◽  
Large Scale ◽  
Analog Circuit ◽  
Supply Voltage ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Low Pass

Abstract The important challenge for the realization of hearing aids is small size, low cost, low power consumption and better performance, etc. Keeping these requirements in view this work concentrates on the VLSI (Very Large Scale Integrated) implementation of analog circuit that mimic the PPSK (Passive Phase Shift Keying) demodulator with low pass filter. This research deals with RF Cochlear implant circuits and their data transmission. A PPSK modulator is used for uplink data transmission in biomedical implants with simultaneous power, data transmission This paper deals about the implementation of PPSK demodulator with related circuits and low pass filter which are used in cochlear implants consumes low power and operates at 14MHz frequency. These circuits are designed using FINFET 20nm technology with 0.4v DC supply voltage. The performance of proposed design over the previous design is operating at low threshold voltage, reduces static leakage currents and often observed greater than 30 times of improvement in speed performance

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 DIGITAL OSCILLATOR CIRCUIT WITH AN EXTENDED REPETITION PERIOD OF A PSEUDO-RANDOM PULSE SEQUENCE

2020 ◽  
Vol 69 (1) ◽  
pp. 210-214
Author(s):  
A. Zaurbek ◽  
◽  
D.Z. Dzhuruntaev ◽  
Keyword(s):  
Acoustic Noise ◽  
Pulse Sequence ◽  
Linear Feedback ◽  
Pseudorandom Sequence ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Generator Circuit ◽  
Random Pulse ◽  
Low Pass ◽  
Encryption Algorithms

In this paper, we consider the issue of upgrading the circuit of a digital generator of a pseudo-random pulse sequence, which can be used to create cryptographic encryption algorithms. The need to modernize the digital generator circuit is associated with an increase in the number of pseudorandom pulse train sequences generated at its output and with pseudorandom intervals between them. To achieve this, a small number of additional elements are included in the circuit of a digital pseudorandom sequence of pulses based on a five-digit shift register with linear feedback. Based on the modernized circuit of a digital generator of a pseudorandom sequence of pulses and an active secondorder Slenlen-Key RC low-pass filter, a digital acoustic noise generator is constructed, which, unlike the prototype, has a truly random output signal over a period of ~ 4 * (2N - 1), subject to circuit simplicity.

Synthesizing and Optimizing of Wide Stopband Low-Pass Filter with Improved Infinite Attenuation Unit Based on Stubs

Frequenz ◽  
2018 ◽  
Vol 72 (11-12) ◽  
pp. 523-531 ◽  
Author(s):  
Zhenxing Yang ◽  
Yao Yao ◽  
Yi Jin ◽  
Mingyu Li ◽  
Zhen Geng ◽  
...  
Keyword(s):  
Computer Aided Design ◽  
High Performance ◽  
Filter Design ◽  
Microwave Filters ◽  
Effective Control ◽  
Parameter Method ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Low Pass ◽  
Loss Method

Abstract Currently, most microwave filters are designed using sophisticated computer-aided design (CAD) tools, which primarily based on the insertion loss method. The image parameter method (IPM), which can provide an effective control for the passband and stopband of microwave filters without any use of lumped prototypes, is paid little attention to microwave filter design. In this paper, the detailed design procedures for synthesizing microwave low-pass filter (LPF) and optimizing the performance of Butterworth filter with IPM are proposed. Based on the IPM, the improved infinite attenuation unit (IAU) cell can be designed firstly, which can attain higher selectivity and better stopband rejection of LPF while maintain good performance in passband. Then a 2 GHz ten-order high-performance LPF and an optimized Butterworth LPF are designed using improved IAU cell. Experiment results of the fabricated LPF agree well with the full-wave EM simulation, which shows the proposed approach can provide improved characteristics for both passband and stopband of LPFs.

The Design and Simulation of DDS Based on Multisim and C51

2013 ◽  
Vol 416-417 ◽  
pp. 1368-1372
Author(s):  
Jie Ma
Keyword(s):  
Frequency Synthesizer ◽  
Circuit Simulation ◽  
Frequency Control ◽  
Sine Wave ◽  
Control Word ◽  
Clock Frequency ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Control Center ◽  
Low Pass

In order to facilitate intuitive and understanding of the frequency synthesizer technology, research on direct digital frequency synthesizer by the phase accumulator , waveform storage ROM, the D/ Aconverter and low-pass filter modules .Multisim provides powerful virtual electronic platform, realize DDS synthetic sine wave design and circuit simulation by C51 MCU control center, while providing key code. By adjustingthe reference clock frequency fc, or to adjust the frequency control word K, can be clearly seen of the frequency of the synthesized sine wave will be changed.

scholarly journals Removing mains power artefacts from EEG – a novel template-based method

2020 ◽  
Author(s):  
Shenghuan Zhang ◽  
Brendan McCane ◽  
Phoebe S-H Neo ◽  
Neil McNaughton
Keyword(s):  
Notch Filter ◽  
Electrical Equipment ◽  
Noise Removal ◽  
Sine Wave ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Adaptive Notch Filter ◽  
Low Pass ◽  
Power Noise ◽  
Better Than

ABSTRACTEEG signals are often contaminated with artefacts, particularly with mains power from electrical equipment. Low-pass filtering and notch filtering can lose valuable data. Here we describe a novel mains power noise removal method based on the fact that mains power noise is a sine wave component with an essentially fixed frequency and the same phase across all channels. This removes the blink component, leaving uncontaminated EEG largely unchanged. Blink removal had a success rate of >99.9% recovered variance of the original EEG when removing synthesised mains power components. We compared this method with two other popular mains power noise removal methods. Our method was better than Cleanline which is an ICA based method and multiple PLI which is an adaptive notch filter based method. With the higher recovery, our method shows clear advantages over Cleanline and multiple PLI for removing mains power noise. From the aspect of data loss, it is obviously better than low-pass filter and normal notch filter.

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