scholarly journals Design of High-Order CMOS Analog Notch Filter with 0.18 μm CMOS Technology

2018 ◽  
Author(s):  
Kittipong Tripetch
Keyword(s):  
Notch Filter ◽  
Cmos Technology ◽  
High Order

System identification and a model-based control strategy of motor driven system with high order flexible manipulator

2019 ◽  
Vol 46 (5) ◽  
pp. 672-681 ◽  
Author(s):  
Youshuang Ding ◽  
Xi Xiao ◽  
Xuanrui Huang ◽  
Jiexiang Sun
Keyword(s):  
System Identification ◽  
Dynamic Response ◽  
Notch Filter ◽  
High Order ◽  
Flexible Manipulator ◽  
Identification Algorithm ◽  
Content Type ◽  
Model Based ◽  
Driven System ◽  
High Dynamic

Purpose This paper aims to propose a novel system identification and resonance suppression strategy for motor-driven system with high-order flexible manipulator. Design/methodology/approach In this paper, first, a unified mathematical model is proposed to describe both the flexible joints and the flexible link system. Then to suppress the resonance brought by the system flexibility, a model based high-order notch filter controller is proposed. To get the true value of the parameters of the high-order flexible manipulator system, a fuzzy-Kalman filter-based two-step system identification algorithm is proposed. Findings Compared to the traditional system identification algorithm, the proposed two-step system identification algorithm can accurately identify the unknown parameters of the high order flexible manipulator system with high dynamic response. The performance of the two-step system identification algorithm and the model-based high-order notch filter is verified via simulation and experimental results. Originality/value The proposed system identification method can identify the system parameters with both high accuracy and high dynamic response. With the proposed system identification and model-based controller, the positioning accuracy of the flexible manipulator can be greatly improved.

scholarly journals Electronically Tunable Current-mode High-order Ladder Low-pass Filters Based on CMOS Technology

2015 ◽  
Vol 24 (4) ◽  
pp. 974-987 ◽  
Author(s):  
T. Kunto ◽  
P. Prommee ◽  
M. T. Abuelma'atti
Keyword(s):  
Current Mode ◽  
Cmos Technology ◽  
High Order ◽  
Low Pass ◽  
Electronically Tunable ◽  
Low Pass Filters

Measured hyperbolic-sine (sinh) CMOS results: A high-order 10Hz–1kHz notch filter for 50/60Hz noise

2013 ◽  
Vol 44 (12) ◽  
pp. 1268-1277 ◽  
Author(s):  
Evdokia M. Kardoulaki ◽  
Konstantinos N. Glaros ◽  
Patrick Degenaar ◽  
Andreas G. Katsiamis ◽  
Henry Man D. Ip ◽  
...  
Keyword(s):  
Notch Filter ◽  
High Order ◽  
Hyperbolic Sine

scholarly journals A High-Order Load Model and the Control Algorithm for an Aerospace Electro-Hydraulic Actuator

Actuators ◽  
2021 ◽  
Vol 10 (3) ◽  
pp. 53
Author(s):  
Shoujun Zhao ◽  
Keqin Chen ◽  
Xiaosha Zhang ◽  
Yingxin Zhao ◽  
Guanghui Jing ◽  
...  
Keyword(s):  
Transfer Function ◽  
Fourth Order ◽  
Dynamic Pressure ◽  
Resonance Effect ◽  
Notch Filter ◽  
High Order ◽  
Model Parameters ◽  
Hydraulic Actuator ◽  
Control Block ◽  
Load Model

It is difficult to describe precisely, and thus control satisfactorily, the dynamics of an electro-hydraulic actuator to drive a high thrust liquid launcher engine, whose structural resonant frequency is usually low due to its heavy inertia and complicated mass distribution, let alone one to drive a heavy kerolox engine with high-order dynamics. By transforming classic control block diagrams, a baseline two-mass-two-spring load model and a normalized actuator-engine system model were developed for understanding the basic physics and methodology, where a fourth-order transfer function is used to model the multi-resonance-frequency engine body outside of the rod position loop, another fourth-order transfer function with two pairs of conjugated zeros and poles to represent the composite hydro-mechanical resonance effect in the closed rod position loop. A sixth-order model was thereafter proposed for even higher dynamics. The model parameters were identified and optimized by a full factor search approach. To meet the stringent specification of static and dynamic performances, it was demonstrated that a notch filter network combined with other controllers is needed since the traditional dynamic pressure feedback (DPF) is difficult to handle the high-order dynamics. The approach has been validated by simulation, experiments and successful flights. The models, analysis, data and insights were elaborated.

scholarly journals A concurrent dual-band CMOS low noise amplifier at 2.4/5.2 GHz for WLAN applications

2019 ◽  
Vol 14 (2) ◽  
pp. 555
Author(s):  
S.A.Z. Murad ◽  
A. F. Hasan ◽  
A. Azizan ◽  
A. Harun ◽  
J. Karim
Keyword(s):  
Noise Figure ◽  
Supply Voltage ◽  
Notch Filter ◽  
Cmos Technology ◽  
High Gain ◽  
Low Noise ◽  
Low Noise Amplifier ◽  
Dual Band ◽  
Common Source ◽  
Noise Amplifier

<span>This paper presents a concurrent dual-band CMOS low noise amplifier (LNA) at operating frequency of 2.4 GHz and 5.2 GHz for WLAN applications. The proposed LNA employed cascode common source to obtain high gain using 0.13-µm CMOS technology. The concurrent dual-band frequencies are matched using LC network band-pass and band-stop notch filter at the input and output stages. The filters help to shape the frequency response of the proposed LNA. The simulation results indicate that the LNA achieves a forward gain of 21.8 dB and 14.22 dB, input return loss of -18 dB and -14 dB at 2.4 GHz and 5.2 GHz, respectively. The noise figure of 4.1 dB and 3.5 dB with the input third-order intercept points 7 dBm and 10 dBm are obtained at 2.4 GHz and 5.2 GHz, respectively. The LNA dissipates 2.4 mW power at 1.2 V supply voltage with a chip size of 1.69 mm2.</span>

scholarly journals CMOS Analog Filter Design for Very High Frequency Applications

Electronics ◽  
2020 ◽  
Vol 9 (2) ◽  
pp. 362 ◽  
Author(s):  
Luis Abraham Sánchez-Gaspariano ◽  
Carlos Muñiz-Montero ◽  
Jesús Manuel Muñoz-Pacheco ◽  
Carlos Sánchez-López ◽  
Luz del Carmen Gómez-Pavón ◽  
...  
Keyword(s):  
High Frequency ◽  
Filter Design ◽  
Notch Filter ◽  
Cmos Technology ◽  
Oxide Semiconductor ◽  
Reduced Form ◽  
Analog Filters ◽  
Analog Filter ◽  
Very High Frequency ◽  
Very High

A design strategy for the synthesis of high-selectivity/low-order analog filters in Complementary Metal-Oxide-Semiconductor (CMOS) technology for very high frequency (VHF) applications is presented. The methodology for the reconstitution of a given transfer function by means of Signal Flow Graphs (SFG) manipulation in canonical form is proposed leading to a fully differential g m -C biquad filter. As a practical example, the design of a notch filter intended to suppress interferers in the lower sideband (400 MHz) of the Medical Implant Communication Service (MICS), in single-poly, 6-metal layers; Mixed-Signal/RF 0.18 µm CMOS technology is realized. To compare the performance of the proposal with some other solution, the design of a 7th order elliptic notch filter based on Frequency Dependent Negative Resistors (FDNRs) was also accomplished. The attained simulation results prove that the proposal is competitive compared to the FDNR solution and some other state-of-the-art filters reported in the literature. The most salient features of the proposed notch biquad include: the selectivity, whose value is comparable to that of a 7th order elliptic approach and some other 3rd order filters; a high-frequency operation without resonators; linearity, with a +15 dBm I I P 3 ; a reduced form factor with a total occupied area of 0.004282 mm2 and mostly a low design complexity.

A New network multiplier using modified high order encoder and optimized hybrid adder in CMOS technology

2013 ◽  
Vol 2 (3) ◽  
pp. 159-164 ◽  
Author(s):  
Pooya Asadi
Keyword(s):  
Cmos Technology ◽  
High Order
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