Terahertz wide band-pass filter design based on double layer metal hole arrays

2011 ◽  
Author(s):  
Song Xia ◽  
Dongxiao Yang ◽  
Lei Rao ◽  
Tao Li
Keyword(s):  
Double Layer ◽  
Filter Design ◽  
Wide Band ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Band Pass ◽  
Hole Arrays

A TUNABLE HETERODYNE FILTER DESIGN ON RECONFIGURABLE FABRIC

2004 ◽  
Vol 13 (05) ◽  
pp. 981-998 ◽  
Author(s):  
SANJAY SHARMA ◽  
R. C. CHAUHAN ◽  
SANJAY ATTRI
Keyword(s):  
Filter Design ◽  
Notch Filter ◽  
Wide Band ◽  
Band Pass Filter ◽  
Narrowband Interference ◽  
Pass Filter ◽  
Gate Arrays ◽  
Band Pass ◽  
Reconfigurable Fabric ◽  
High Pass

This paper presents the design of tunable heterodyne filter that can be used very effectively in the elimination of narrowband interference in wide-band communications. The filter makes use of the heterodyne process to create a tunable notch filter from a fixed coefficient high-pass filter. It has been shown that it is possible to generate a signal that can be used to set the heterodyne frequency to match the tunable heterodyne notch filter to the center of the detected interference through the use of a simple second order IIR band-pass filter to detect the narrowband interference. Moreover various options have been illustrated for the implementation of heterodyne filters using Xilinx Virtex field programable gate arrays (FPGAs).

COMPACT MICROSTRIP BAND-PASS FILTER FOR EMI REDUCTION

2015 ◽  
Vol 77 (12) ◽  
Author(s):  
Kabir Ibrahim Jahun ◽  
Hussein Mohamed Hagi Hassan Abdirahman Mohamud Shire ◽  
Ali Orozi Sougui ◽  
S. H. Dahlan
Keyword(s):  
Filter Design ◽  
Stop Band ◽  
Band Pass Filter ◽  
Defected Ground Structure ◽  
Coupled Line ◽  
Pass Filter ◽  
Filter Structure ◽  
Coupled Lines ◽  
Band Pass ◽  
Compact Design

Compact microstrip band-pass filter design using parallel coupled lines is presented in this paper. The microstrip lines are calculated and constructed using CST studio with two input and output ports of the filter structure are printed over Defected Ground Structure (DGS).The proposed symmetrical structure offers a simple and compact design while exhibiting an improved stop-band characteristics in comparison to conventional coupled microstrip line filter structure. The simulation and measurements of 2GHz prototype band pass filter are presented. The measured result agrees well with the simulation data. Compared with conventional parallel coupled line band pass filter, the second, third and fourth spurious responses are suppressed; in addition, the size of the prototype filter circuit is reduced up to 20.8%.  

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