scholarly journals Designing Microstrip Low Pass Filter In ISM Band For Rectenna System

2012 ◽  
Vol 1 (4) ◽  
pp. 356
Author(s):  
Pavan Sharma ◽  
Veerendra Jadaun ◽  
Devesh Mahor ◽  
Atal Verma
Keyword(s):  
Power Transmission ◽  
Wireless Power ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Communication Techniques ◽  
Filter Structure ◽  
Rf Communication ◽  
Power Transmission Systems ◽  
Low Pass ◽  
Low Pass Filters

The filter is required in all RF-communication techniques. Low Pass Filters play an important role in wireless power transmission systems. Transmitted and received signals have to be filtered at a certain frequency with a specific bandwidth. In this paper the design of filter is done in the ISM (Industrial, Scientific and Medical) band whose frequency lies between 1.55GHz- 3.99GHz. After getting the specifications required, we realized the filter structure with the help of CST-MW software.

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.

Based on Phase-Locked Loop the ADF4350 Filter Design

2014 ◽  
Vol 631-632 ◽  
pp. 301-305 ◽  
Author(s):  
Bai Shan Zhao ◽  
Ye Xu ◽  
Jin Shuai Qu
Keyword(s):  
Filter Design ◽  
Structural Characteristics ◽  
Circuit Simulation ◽  
Phase Locked Loop ◽  
Actual Situation ◽  
Loop Filter ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Filter Structure ◽  
Low Pass

Based on the basic principle of the phase locked loop, analyzes the structural characteristics of the loop filter technology and ADF4350; secondly, design and analysis of two order passive low pass filter, three order passive low pass filter, two order active low-pass filter, with parameters such as bandwidth, phase margin ADF4350 PLL, selection the loop filter is suitable for the actual situation; using ADIsimPLL software to determine the parameters and realize the optimization of S parameters on circuit simulation, optimized and then use ADS software to observe. Finally, according to the results of analysis to adapt to the situation three kinds of filter structure of ADF4350phase locked loop.

A Performance Enhancement Scheme for Robust Repetitive Control System

2004 ◽  
Vol 126 (1) ◽  
pp. 224-229 ◽  
Author(s):  
Byung-Sub Kim ◽  
Tsu-Chin Tsao
Keyword(s):  
Control System ◽  
Performance Enhancement ◽  
Repetitive Control ◽  
Sensitivity Function ◽  
Robust Performance ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Model Stability ◽  
Filter Structure ◽  
Low Pass

This paper presents a method for enhancing the performance of a digital repetitive control system. The performance at the fundamental frequency and its harmonics of repetitive exogenous signals is improved by applying a modified low-pass qz,z−1 filter structure in the repetitive signal generator of the internal model. Stability and robust performance is achieved through μ-synthesis. The modified low-pass filter is motivated by the attempt to reduce the sensitivity function by squaring it. The magnitude of the sensitivity function is substantially reduced at the periodic reference frequencies since the value is already much less than unity. The proposed approach is demonstrated by its implementation on an electrohydraulic actuator for tracking periodic cam-like profiles.

scholarly journals A Very Compact and Sharp Roll-Off Low-Pass Filter with Four Transmission Zeros

2015 ◽  
Vol 2015 ◽  
pp. 1-6 ◽  
Author(s):  
Yang Xiao ◽  
Lin Li
Keyword(s):  
Transmission Line ◽  
High Performance ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Transmission Zeros ◽  
Filter Structure ◽  
Novel Structure ◽  
Compact Size ◽  
Low Pass

A novel structure with sharp roll-off, wide stopband, and very compact size is presented in this paper. By combining a capacitor-embedded transmission line ring and two shunt open stubs, this structure exhibits a high-performance three-pole low-pass filter (LPF) response with four generated transmission zeros. With the help of these four transmission zeros, the proposed LPF achieves improved roll-off rate, extended stopband, and significantly very compact size. To verify the feasibility of the proposed structure, a prototype LPF having the cut-off frequency at 0.63 GHz is designed, fabricated, and measured as an illustrative example. Final result shows that a roll-off rate of 109.3 dB/GHz along with a relative stopband bandwidth of 114.6% can be obtained. Moreover, the filter dimensions are as small as 15.7 mm × 26.9 mm, that is,0.004λg2, whereλgis the guided wavelength at the cut-off frequency. The filter structure is simple and easy to fabricate as well.

Design of Programmable Wideband Low Pass Filter with Continuous-Time/Discrete-Time Hybrid Architecture

2017 ◽  
Vol E100.C (10) ◽  
pp. 858-865 ◽  
Author(s):  
Yohei MORISHITA ◽  
Koichi MIZUNO ◽  
Junji SATO ◽  
Koji TAKINAMI ◽  
Kazuaki TAKAHASHI
Keyword(s):  
Discrete Time ◽  
Continuous Time ◽  
Hybrid Architecture ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Low Pass

ANALYSIS AND IMPROVEMENT TECHNIQUES FOR THE TRANSFER FUNCTION OF A PLANAR LOW - PASS FILTER

2016 ◽  
Vol 15 (12) ◽  
pp. 2579-2586
Author(s):  
Adina Racasan ◽  
Calin Munteanu ◽  
Vasile Topa ◽  
Claudia Pacurar ◽  
Claudia Hebedean
Keyword(s):  
Transfer Function ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Low Pass
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