scholarly journals A novel photonic crystal band-pass filter using degenerate modes of a point-defect microcavity for terahertz communication systems

2014 ◽  
Vol 56 (4) ◽  
pp. 792-797 ◽  
Author(s):  
Chen Chun-Ping ◽  
Tetsuo Anada ◽  
Stephen Greedy ◽  
Trevor M. Benson ◽  
Phillip Sewell
Keyword(s):  
Photonic Crystal ◽  
Point Defect ◽  
Communication Systems ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Terahertz Communication ◽  
Band Pass ◽  
Degenerate Modes

Tunable THz band-pass filter by a ternary photonic crystal

Optik ◽  
2021 ◽  
pp. 167907
Author(s):  
A. Shekari-Firouzjaei ◽  
D. Kalhor
Keyword(s):  
Photonic Crystal ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Ternary Photonic Crystal ◽  
Band Pass

Design of a two-dimensional chalcogenide photonic crystal for application as a band pass filter

2021 ◽  
Author(s):  
Rajpal Singh ◽  
A. Bhargava
Keyword(s):  
Photonic Crystal ◽  
Band Pass Filter ◽  
Two Dimensional ◽  
Pass Filter ◽  
Band Pass

scholarly journals Implementation of an Inductorless 5th Order Band-Pass Filter

2021 ◽  
Author(s):  
Ara Abdulsatar Assim Assim
Keyword(s):  
Communication Systems ◽  
Order Approximation ◽  
Design Procedure ◽  
Operational Amplifiers ◽  
Band Pass Filter ◽  
Analog Filter ◽  
Pass Filter ◽  
Low Pass Filter ◽  
Low Pass ◽  
Band Pass

This paper demonstrates the design and implementation of an inductorless analog band-pass filter (BPF). Band-pass filters are widely used in communication systems, wireless transceivers and audio systems, they only pass signals within a desired frequency range. The principles mentioned in this article can be generalized to design any analog filter regardless of its order, approximation and prototype. The design procedure can be broken down into three main parts, first of all, a passive low-pass filter (LPF) is implemented, then the passive LPF is converted into a passive BPF. Finally, the passive BPF is transformed into an active BPF by adding operational amplifiers. The active BPF is then modified into two different topologies, the first in which the inductors are replaced with simulated- inductors (gyrators), while in the second topology, less operational amplifiers are used. <br>

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