Dual‐band circularly polarized crossed‐dipole antenna with double split‐ring resonators and a defected ground structure

2021 ◽  
Author(s):  
Jianfang Deng ◽  
Rui Tian
Keyword(s):  
Dipole Antenna ◽  
Ring Resonators ◽  
Dual Band ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Split Ring ◽  
Circularly Polarized ◽  
Split Ring Resonators

scholarly journals Fractal Antenna Based on Split Ring Resonators with Defected Ground Structure

2020 ◽  
pp. 110-117
Author(s):  
Aruna R ◽  
Sreegiri S S
Keyword(s):  
Impedance Matching ◽  
Wide Band ◽  
Split Ring Resonator ◽  
Ring Resonators ◽  
Fractal Antenna ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Split Ring ◽  
Split Ring Resonators ◽  
Circular Patch

In this paper presents the design of a circular microstrip fractal antenna (CMFA) loaded with parasitic edge-coupled (EC) split ring resonators (SRR) and defected ground structure (DGS). The basic resonant structure is a circular patch antenna designed at 3.2 GHz on FR4 substrate with relative permittivity 4.4, and 1.6 mm thickness. One iteration of circular patch and slots is employed to form it fractal and so as to attain multiband performance, the antenna is inset fed by a 50? microstrip line. Further the work is extended to demonstrate the effect of placing split ring resonator to particular position of substrate, improves the impedance matching leading to improved bandwidth. In addition L shaped defected ground structures are used to improve the antenna performance. . A comparison between fractal antenna with and without SRRs and DGS is made and the results verifies that a better gain improvement and return loss. The dimensions of the antenna are 45 mm x 45 mm and it can be used for ultra wide band (UWB) applications.

Dual-Band Circularly Polarized Split Ring Resonators Loaded Square Slot Antenna

2016 ◽  
Vol 64 (8) ◽  
pp. 3640-3645 ◽  
Author(s):  
Krishnamoorthy Kandasamy ◽  
Basudev Majumder ◽  
Jayanta Mukherjee ◽  
Kamla Prasan Ray
Keyword(s):  
Ring Resonators ◽  
Dual Band ◽  
Slot Antenna ◽  
Split Ring ◽  
Circularly Polarized ◽  
Split Ring Resonators

scholarly journals Design of a SIW Bandpass Filter Using Defected Ground Structure with CSRRs

2017 ◽  
Vol 2017 ◽  
pp. 1-6 ◽  
Author(s):  
Weiping Li ◽  
Zongxi Tang ◽  
Xin Cao
Keyword(s):  
Bandpass Filter ◽  
Simulation Software ◽  
Ring Resonators ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Split Ring ◽  
Split Ring Resonators ◽  
Resonant Modes ◽  
Measurement Results ◽  
Good Agreement

In this paper, a substrate integrated waveguide (SIW) bandpass filter using defected ground structure (DGS) with complementary split ring resonators (CSRRs) is proposed. By using the unique resonant properties of CSRRs and DGSs, two passbands with a transmission zero in the middle have been achieved. The resonant modes of the two passbands are different and the bandwidth of the second passband is much wider than that of the first one. In order to increase out-of-band rejection, a pair of dumbbell DGSs has been added on each side of the CSRRs. The structure is analyzed using equivalent circuit models and simulated based on EM simulation software. For validation, the proposed filter is fabricated and measured. The measurement results are in good agreement with the simulated ones.

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