Stamp Modeling, Analysis and Design of Defected Microstrip Structure for Lowpass Filters Based on Properties of Metamaterials

2013 ◽  
Vol 763 ◽  
pp. 223-228
Author(s):  
Hai Lin Cao ◽  
Jin Tao Luo ◽  
Qing Luo ◽  
Hao Li ◽  
Wei Guan
Keyword(s):  
Frequency Response ◽  
Slow Wave ◽  
Insertion Loss ◽  
Cutoff Frequency ◽  
Wave Characteristic ◽  
Analysis And Design ◽  
Modeling Analysis ◽  
Low Insertion Loss ◽  
Microstrip Structure ◽  
Sharp Cutoff

Defected microstrip structure (DMS) is one kind of metamaterials, which has many characteristics that bandgap and slow wave characteristic and so on. Three types of defected microstrip structure (DMS) units which are cross-shaped, round-head-shaped and square-head-shaped DMS are proposed and investigated. Further, three DMS units are used in the design of lowpass filters (LPFs) and the obtained performances are examined. Based on three DMS units, three lowpass filters using sixteen cascaded proposed DMS units are designed and fabricated. The designed LPFs exhibit sharp cutoff frequency response, low insertion loss, and excellent stopband performance.

scholarly journals Low insertion loss of surface mount device low pass filter at 700 MHz

2019 ◽  
Vol 8 (2) ◽  
pp. 382-388
Author(s):  
Khairil Anuar Khairi ◽  
Mohd Faizal Jamlos ◽  
Surentiran Padmanathan ◽  
Mohd Aminudin Jamlos ◽  
Muammar Mohamad Isa
Keyword(s):  
Transition Region ◽  
Insertion Loss ◽  
Power Supply ◽  
Cutoff Frequency ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Surface Mount ◽  
Low Pass ◽  
Low Insertion Loss ◽  
Image Frequency

The paper involved with the design, simulation and fabrication of 6th order elliptical-based Surface Mount Device (SMD) LPF with cutoff frequency at 700 MHz. Fabricated LPF is consisted of four PCB layers which components of SMD are soldered on the top layer. Another three layers is for grounding and shielding, power supply and grounding void. The four layers is crucial to avoid interference between components. The research has find out that the momentum simulation is definitely required to improve the signals response compared to a normal simulation by ADS software. The comparison between momentum simulated versus measured and normal simulated versus measured is 0.2 dB and 29 dB correspondingly. Such huge difference leads to conclusion that momentum simulation is saving time without having much struggles and efforts to get optimum readings. The Proposed SMD LPF has a very low insertion loss of 0.965dB with a transition region of 195 MHz which is good steepness to avoid any image frequency.

A Compact Lowpass Filter with Four Transmission Zeros Using Single-Sided Compact Microstrip Resonator Cells

2012 ◽  
Vol 487 ◽  
pp. 125-129
Author(s):  
Kai Yu Zhao ◽  
Lin Li
Keyword(s):  
Insertion Loss ◽  
Return Loss ◽  
Cutoff Frequency ◽  
Lowpass Filter ◽  
Sharp Transition ◽  
Microstrip Resonator ◽  
Broad Bandwidth ◽  
Transmission Zeros ◽  
Compact Size ◽  
Low Insertion Loss

A compact lowpass filter using two single-sided compact microstrip resonator cells （CMRCs）with low insertion loss and broad bandwidth is presented. The cutoff frequency is about 1.4 GHz, the insertion loss is less than 0.6 dB and the 20dB bandwidth is up to the range from 2.1 GHz to 9.8 GHz by means of introducing four transmission zeros through two CMRCs. In addition, the simulated results demonstrate that the proposed filter is characterized by a compact size, low insertion loss, sharp transition, low return loss and wide bandwidth.

USE OF THE FAN-SHAPED IDTS – EFFICIENT METHOD FOR CREATING THE WIDEBAND SAW FILTERS WITH A LOW INSERTION LOSS AND HIGH RECTANGULARITY OF FREQUENCY RESPONSE

2021 ◽  
pp. 59-74
Author(s):  
А. S. Bagdasaryan ◽  
Yu. V. Gulyaev ◽  
S. A. Dobershtein ◽  
T. V. Sinitsina
Keyword(s):  
Frequency Response ◽  
Efficient Method ◽  
Insertion Loss ◽  
Shape Factor ◽  
Amplitude Response ◽  
Relative Bandwidth ◽  
Low Insertion Loss ◽  
Qualitative Characteristics

This paper presents an efficient method for creating the wideband SAW filters with high rectangularity, flat amplitude response and low insertion loss in passband – use of fan-shaped IDTs with inclined electrodes. The authors consider the approaches for realization of the fan-shaped filters. The quantitative and qualitative characteristics of the fan-shaped SAW filters with a relative bandwidth ∆f/f0 = 4–75 %, shape factor 1,1–1,96 and insertion loss of 5–18 dB are given for each approach.

Study of a Low Insertion Loss SAW Filter with SPUDT Structure Using YZ-LiNbO3

2012 ◽  
Vol 251 ◽  
pp. 139-142 ◽  
Author(s):  
Hua Jiang ◽  
Wen Ke Lu ◽  
Shi Gen Shen ◽  
Zheng Guang Xie
Keyword(s):  
Frequency Response ◽  
Insertion Loss ◽  
Single Phase ◽  
Electromechanical Coupling ◽  
Piezoelectric Materials ◽  
Center Frequency ◽  
Electronic Systems ◽  
Coupling Constant ◽  
Low Insertion Loss ◽  
Simulation Results

To meet the demand for low insertion loss, we have studied a SAW filter with single phase unidirectional transducer (SPUDT) structure using piezoelectric materials YZ-LiNbO3. This article shows the simulation results of the SAW filter using Matlab software with the SAW velocity 3488m/s and electromechanical coupling constant 0.048. The theoretical center frequency is 72MHz and the 3dB bandwidth is 2.9MHz. The total frequency response of the entire SAW device is the product of the frequency response of the input transducer and the output transducer. It can be seen from the simulation results that the magnitude response and the linear phase response of interdigital transducer are consistent with the theoretical values and the minimum insertion loss reaches 5.43dB. So the low insertion loss SAW filter with SPUDT structure using YZ-LiNbO3 adapts the requirements of the radar, communications and other electronic systems.

A compact ultra-wide stopband, low insertion loss, and sharp cutoff low-pass filter

2010 ◽  
Vol 52 (3) ◽  
pp. 568-570
Author(s):  
Shu-Hong Fu ◽  
Chuang-Ming Tong ◽  
Xi-Min Li ◽  
Kai Shen
Keyword(s):  
Insertion Loss ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Low Pass ◽  
Cutoff Low ◽  
Low Insertion Loss ◽  
Sharp Cutoff
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