Defected Ground Structure Switchable Notch Band Antenna for UWB Applications

2017 ◽  
pp. 139-145
Author(s):  
Vamseekrishna Allam ◽  
B. T. P. Madhav
Keyword(s):  
Defected Ground Structure ◽  
Ground Structure ◽  
Notch Band ◽  
Uwb Applications

Compact triple-band bandpass filter using multi-mode HMSIW cavity and half-mode DGS

2020 ◽  
pp. 1-8
Author(s):  
Sambaiah Pelluri ◽  
M. V. Kartikeyan
Keyword(s):  
Bandpass Filter ◽  
Substrate Integrated Waveguide ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Slot Line ◽  
Notch Band ◽  
Multi Mode ◽  
Triple Band

Abstract In this paper, a triple-band bandpass filter using a multi-mode half-mode substrate integrated waveguide (HMSIW) cavity is presented. In this design, back-to-back connected half-mode defected ground structure (DGS) is loaded into the HMSIW cavity, which generates the first passband. The first four modes of HMSIW cavity are TM110, TM120, TM310, and TM320. They have been used to generate second and third passbands. The slot line perturbation is used to shift the modes close to each other. Here, TM110 and TM120 constitute second passband, and TM310 and TM320 give third passband. Moreover, the notch band is designed using embedded open-circuited stub to improve the attenuation between the second and third passbands. The proposed filter is designed and fabricated on RT/Duroid 5880 substrate with a thickness of 0.508 mm. The measured results are in line with simulated ones for each of the passbands, and the center frequencies are 6.28, 13, and 19.12 GHz.

scholarly journals DGS based monopole circular-shaped patch antenna for UWB applications

2021 ◽  
Vol 3 (2) ◽  
Author(s):  
Dattatreya Gopi ◽  
Appala Raju Vadaboyina ◽  
J. R. K. Kumar Dabbakuti
Keyword(s):  
Patch Antenna ◽  
Substrate Material ◽  
Impedance Bandwidth ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Compact Structure ◽  
Resonant Frequencies ◽  
Low Profile ◽  
Uwb Applications ◽  
Good Agreement

AbstractA simple low profile defected ground structure based monopole circular-shaped patch antenna is proposing for ultrawide-band applications. The design allows for a simple and compact structure on the FR-4 substrate material. The proposed design initially has a meager antenna gain and bandwidth. To increase the antenna bandwidth and gain, the defective ground structure is implemented with four dumble-shaped slots. Parametric analysis is considered to find the radius of circular patch for tuning of UWB frequency applications. The proposed MCP antenna resonates at 2.9 GHz, 9.1 GHz frequencies with a S11 of − 34.84 dB, − 33.74 dB, respectively, and achieves 8.1 GHz (2.5–10.6 GHz) impedance bandwidth concerning the − 10 dB reference line of the reflection coefficient. The gains are 8.4 dBi, 8.2 dBi for the two resonant frequencies, and the radiation patterns are semi-omnidirectional, omnidirectional. The proposed antenna has-been validated by observing good agreement between the simulation and the measured results.

scholarly journals Design of Dual Notch UWBMIMO Antenna with Defected Ground Structure.

2019 ◽  
Vol 9 (2S3) ◽  
pp. 318-322
Keyword(s):  
Dielectric Constant ◽  
Frequency Band ◽  
Ground Plane ◽  
Radiation Efficiency ◽  
Dual Band ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Maximum Gain ◽  
Notch Band

In this paper A dual band notched MIMO antennais designed with defected ground structure as ground plane and its characteristics are analyzed. The antenna covers UWB frequency ranging from 3.1-10.6 GHz with single notch band characteristics with maximum gain of 3.7 dB. The antenna provides radiation efficiency of 94% with front to back to ratio of 64%. The simulated studied is carried for many frequency band applications. The designed antenna shows patterns similar to that of a the dipole. The substrate used to design this antenna is FR4 withdimensions of 26mm x40mmx1.6mm and dielectric constant of 4.4.The notch bands are at WLAN and WiMax frequencies.

scholarly journals V-Shaped Monopole Antenna with Chichena Itzia Inspired Defected Ground Structure for UWB Applications

2020 ◽  
Vol 65 (1) ◽  
pp. 19-32
Author(s):  
Naeem Ahmad Jan ◽  
Saad Hassan Kiani ◽  
Fazal Muhammad ◽  
Daniyal Ali Sehrai ◽  
Amjad Iqbal ◽  
...  
Keyword(s):  
Monopole Antenna ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Uwb Applications

scholarly journals A Compact UWB BPF with a Notch Band using Rectangular Resonator Sandwiched between Interdigital Structure

2017 ◽  
Vol 7 (5) ◽  
pp. 2420
Author(s):  
Yatindra Gaurav ◽  
R.K. Chauhan
Keyword(s):  
Wide Band ◽  
Defected Ground Structure ◽  
Ground Structure ◽  
Rectangular Slot ◽  
Notch Band ◽  
Compact Design ◽  
First Time ◽  
Microstrip Structure ◽  
Better Than ◽  
Filter Response

This paper presents a compact design of an ultra wide band bandpass filters with a notch band using interdigital structure. The aim of the design is to reduce the size of filter, reduce the complexity of the design, and improve the performance of filter response. The proposed filter comprises of a rectangular resonator sandwiched between Interdigital structures, with rectangular slot as defected microstrip structure at the input and output ports. This design has been used for the first time to achieve the above aim. The advantage with this design is that, it does not use any via or defected ground structure. The insertion loss of proposed filter, in passband between 3.1 GHz to 10.8 GHz, is less than 0.7dB, and for the notched band it is 21.5 dB centred at 7.9 GHz. The proposed filter is fabricated, tested and compared with simulated results. The proposed design was small in size with less complexity, and shows performance better than the other designs available in the literatures at this dimension.

scholarly journals Bandwidth enhanced CPW fed elliptical wideband antenna with slotted defected ground structure

2018 ◽  
Vol 7 (2.8) ◽  
pp. 365
Author(s):  
B T P Madhav ◽  
M Purna Kishore
Keyword(s):  
Ground Plane ◽  
Impedance Bandwidth ◽  
Defected Ground Structure ◽  
Excellent Correlation ◽  
Ground Structure ◽  
Resonant Frequencies ◽  
Bandwidth Enhancement ◽  
Wideband Antenna ◽  
Notch Band ◽  
Proposed Model

In this article, a simple curved elliptical coplanar wave guide fed antenna is proposed for wideband applications. An elliptical shaped model of multiband antenna is converted as notch band antenna with placement of slots in the radiating structure and by incorporating defected ground structure, bandwidth enhancement isattained in the proposed model. In short, the multiband antennais modelled in to wideband antenna with bandwidth of 17.8 GHz and impedance bandwidth of 67%.By placing defected ground structure adjacent to feed line on the ground plane, additional resonant frequencies are raised and enhancement in the bandwidth is obtained. The measured results are providing excellent correlation with simulation results obtained from HFSS and CST tools.

Sign in / Sign up

Export Citation Format

Share Document