A Design for Clock Synchronization Using CPPLL

2014 ◽  
Vol 543-547 ◽  
pp. 558-561 ◽  
Author(s):  
Xiao Wang ◽  
Zhi Bin Zeng
Keyword(s):  
High Performance ◽  
High Stability ◽  
Clock Synchronization ◽  
High Accuracy ◽  
Output Frequency ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Synchronization System ◽  
Low Pass ◽  
Reference Clock

High performance clock synchronization system is essential in communication transmission, which is based on the principle of phase locked loop synchronization that tracking a high accuracy, high stability reference clock source usinh low-pass filter to turn the value into voltage and to control VCO or VXCO and makes the output frequency and the input frequency to maintain strict synchronization.

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.

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.

Optimization Algorithm Analysis for FIR Filter by FPGA

2013 ◽  
Vol 373-375 ◽  
pp. 1269-1273 ◽  
Author(s):  
Zhao Jun Shen ◽  
Sen Xu
Keyword(s):  
Filter Design ◽  
High Accuracy ◽  
Fir Filter ◽  
Algorithm Analysis ◽  
Partial Functions ◽  
Optimization Scheme ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Scheme Design ◽  
Low Pass

The article introduces essential method to realize the high accuracy and velocity FIR filter by FPGA. Proposes the FIR filter optimization scheme design of serial shifts based on FPGA. Avoided the shortcoming of the traditional parallel algorithm module taking the massive hardware resources . And give 11-order and 8-bits low pass filter design as the specific research object. Realized the partial functions which the traditional numeral FIR filter cannot.May adjusts the filter exponent number conveniently and suits different application.

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.  

scholarly journals A CURRENT-MODE RMS-TO-DC CONVERTER BASED ON TRANSLINEAR PRINCIPLE

2015 ◽  
pp. 171-174
Author(s):  
MOHAMMAD HADI DANESH ◽  
SASAN NIKSERESHT ◽  
MAHYAR DEHDAST
Keyword(s):  
Low Power ◽  
High Performance ◽  
Supply Voltage ◽  
Circuit Complexity ◽  
Current Mode ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Low Pass ◽  
Input Range ◽  
Low Supply Voltage

In this paper a low-power current-mode RMS-to-DC converter is proposed. The proposed converter includes absolute value circuit, squarer/divider circuit, low-pass filter and square root circuit which employ CMOS transistors operating in weak inversion region. The RMS-to-DC converter has low power consumption (<1μW), low supply voltage (0.9V), wide input range (from 50 nA to 500 nA), low relative error (<3 %), and low circuit complexity. Comparing the proposed circuit with two other current-mode circuits shows that the former outperforms the latters in terms of power dissipation, supply voltage, and complexity. Simulation results by HSPICE show high performance of the circuit and confirm the validity of the proposed design technique.

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