Microstrip low-pass filter using open loop resonators

2008 ◽  
Vol 50 (11) ◽  
pp. 2983-2986 ◽  
Author(s):  
Kumud Ranjan Jha ◽  
Neeraj Nehra
Keyword(s):  
Open Loop ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Low Pass

scholarly journals Dynamic modelling and open-loop control of a twin rotor multi-input multi-output system

2002 ◽  
Vol 216 (6) ◽  
pp. 477-496 ◽  
Author(s):  
S M Ahmad ◽  
A J Chipperfield ◽  
M O Tokhi
Keyword(s):  
Mimo System ◽  
Dynamic Modelling ◽  
Open Loop ◽  
Open Loop Control ◽  
Performance Study ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Loop Control ◽  
Low Pass ◽  
Twin Rotor

A dynamic model for a one-degree-of-freedom (DOF) twin rotor multi-input multi-output (MIMO) system (TRMS) in hover is obtained using a black-box system identification technique. The behaviour of the TRMS in certain aspects resembles that of a helicopter; hence, it is an interesting identification and control problem. This paper investigates modelling and open-loop control of the longitudinal axis alone, while the lateral axis movement is physically constrained. It is argued that some aspects of the modelling approach presented are suitable for a class of new generation or innovative air vehicles with complex dynamics. The extracted model is employed for designing and implementing a feedforward/open-loop control. Open-loop control is often the preliminary step for development of more complex feedback control laws. Open-loop control strategies using shaped command inputs are accordingly investigated for resonance suppression in the TRMS. Digital low-pass and band-stop filter shaped inputs are used on the TRMS testbed, based on the identified vibrational modes. A comparative performance study is carried out and the corresponding results presented. The low-pass filter is shown to result in better vibration reduction.

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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