Design of Miniaturization Microstrip Filter in L-Band

2013 ◽  
Vol 816-817 ◽  
pp. 1037-1040
Author(s):  
Hao Ru Wang ◽  
Kai Yang ◽  
Xiang Rang Ren ◽  
Yi Meng Liu
Keyword(s):  
Design Theory ◽  
Bandpass Filter ◽  
Filter Design ◽  
Coupling Coefficients ◽  
Microstrip Resonator ◽  
Relative Bandwidth ◽  
L Band ◽  
Capacitive Loading ◽  
Fifth Order ◽  
The Relationship

A curve of the relationship between the gaps of microstrip resonator and coupling coefficients is presented in this paper, which based on the study of small planar microstrip bandpass filter design theory and implementation. According to the curve, a small microstrip bandpass filter with 6.67% relative bandwidth in L-band is designed by Multi-zigzag line and capacitive loading technology. Compared to the similar hairpin line filters, the area of the filter designed in this paper is reduced by 64% with advantage of smaller size and more simple structure. The examples and results of a fifth-order Chebyshev responsible L-band bandpass filter are presented in the end of this paper.

A CRLH TL Transmission Line Structure and its Application to Bandpass Filter Design

2013 ◽  
Vol 446-447 ◽  
pp. 865-868
Author(s):  
Ya Lin Guan ◽  
Xin Kun Tang ◽  
Shi Lei Zhou
Keyword(s):  
Transmission Line ◽  
Insertion Loss ◽  
Bandpass Filter ◽  
Filter Design ◽  
Left Handed ◽  
Relative Bandwidth ◽  
Low Pass ◽  
Band Pass ◽  
Low Insertion Loss ◽  
High Pass

In this paper, a novel bandpass filter (BPF) using the composite right/left-handed transmission line (CRLH-TL) theory is presented.The composite right/left-handed TL with the high-pass characters of left-handed transmission line (LH-TL) and the low-pass characters of right-handed transmission line (RH-TL) are used to construct the bandpass filter.Using this theory,we design a bandpass filter which have an obvious band pass response with a wide passband range from 5.1to 12.9GHz and a low insertion loss of less than 3.1dB. The relative bandwidth is close to 110%. Simulation using ADS demonstrated the viability of the approach.

scholarly journals Quarter Wave Resonator based Microstrip Bandpass Filter using Asymmetrical coefficients

2019 ◽  
Vol 9 (2) ◽  
pp. 3319-3324
Keyword(s):  
Insertion Loss ◽  
Bandpass Filter ◽  
Filter Design ◽  
Cutoff Frequency ◽  
Center Frequency ◽  
Quarter Wave Resonator ◽  
Wave Resonator ◽  
Quarter Wave ◽  
New Type ◽  
Fifth Order

This paper presents a new concept of bandpass filter design based on quarter-wave resonator which covers ISM band (2.4-2.48 GHz) can be used for applications such as wireless fidelity (Wi-Fi) and Global System for Mobile communication (GSM). A fifth-order Butterworth bandpass filter is designed using standard filter coefficients with fractional bandwidth of 50% for the center frequency of 2.1 GHz. Filter design is achieved using quarter-wave resonator, and the obtained response satisfies the desired filter specifications. The insertion loss of 21 dB is achieved at the cutoff frequency of 2.1 GHz. The passband frequency of 1.877 GHz to 2.772 GHz is achieved in the proposed design. The standard coefficients of the Butterworth filter were modified to propose a new type of asymmetrical filter coefficients. The designed filter has better response than existing method in terms of bandwidth and insertion loss. The designed Bandpass filter has a passband frequency of 1.8 GHz to 2.7 GHz. Therefore, the designed bandpass filter can be used for both Wi-Fi and GSM applications simultaneously.

scholarly journals New Compact Microstrip Filters Based on Quasi Fractal Resonator

2018 ◽  
Vol 7 (4) ◽  
pp. 93-102 ◽  
Author(s):  
Y. S. Mezaal ◽  
H. H. Saleh ◽  
H. Al-saedi
Keyword(s):  
Bandpass Filter ◽  
Filter Design ◽  
Microstrip Resonator ◽  
Broadband Wireless ◽  
Dielectric Thickness ◽  
Wireless Applications ◽  
Microstrip Filters ◽  
Bandstop Filter ◽  
Bandstop Filters ◽  
Good Agreement

This paper presents new microstrip devices  as single band bandpass and multi band bandstop filters. The proposed filters use  slotted patch microstrip resonator based on quasi fractal geometry, simulated by AWR12 software package. Both filters have quasi elliptic frequency response, designed at centre frequency of  2.437 GHz for bandpass filter and at band frequencies of  2.434, 4.032, 4.976 and 5.638 GHz GHz respectively, for multi bandstop filter. All filters are employed using RT/Duroid 6010.8 LM substrate of  dielectric constant and 1.27 mm dielectric thickness. Simulation results show that the designed quasi fractal bandpass filter has very narrow fractional bandwidth of 0.38 %  which is very rare in microstrip filter design. On the other hand,  the projected bandstop filter offers multi  narrow rejection bands that is  useful in broadband wireless schemes influencing from fixed interferences. Both filters  present satisfactory S11 and S21 responses besides smallness properties that stand for interesting features of the newest wireless applications. The simulated and measured frequency responses for both designed filters are in good agreement.

Bandpass Filter Design using the Square Loop Resonator on 3 GHz Frequency for Radar Applications

2020 ◽  
Author(s):  
Lukman Medriavin Silalahi ◽  
Setiyo Budiyanto ◽  
Imelda Uli Vistalina Simanjuntak ◽  
Freddy Artadima Silaban ◽  
Nofal Gusti Sulissetyo ◽  
...  
Keyword(s):  
Bandpass Filter ◽  
Filter Design ◽  
Radar Applications

New dual-band bandpass filter design based on slotted ground structures

2011 ◽  
Vol 53 (7) ◽  
pp. 1505-1511
Author(s):  
Xiao-Hua Wang ◽  
Quan Xue ◽  
Kim Fung Man
Keyword(s):  
Bandpass Filter ◽  
Filter Design ◽  
Dual Band ◽  
Ground Structures
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