scholarly journals Interdigital Coupled Compact FSS Reflector for UWB Antenna Gain Enhancement

2021 ◽  
Author(s):  
Gobinda Sen ◽  
Santanu Das
Keyword(s):  
Equivalent Circuit ◽  
Unit Cell Dimension ◽  
Monopole Antenna ◽  
Phase Response ◽  
Circular Disc ◽  
Antenna Gain ◽  
Linear Phase ◽  
Uwb Antenna ◽  
Microstrip Technology ◽  
Gain Enhancement

Abstract A compact UWB FSS reflector is presented based on interdigital structure for gain enhancement of an UWB antenna. An equivalent circuit approach is proposed for the analysis of the FSS reflector. The reflector comprises a 6 × 6 array of unit cell dimension 6 mm × 6 mm and which is very compact. The reflector gives a linear phase response over UWB band. A UWB monopole antenna is designed with a half circular disc structure based on microstrip technology. A maximum of 5 dBi gain enhancement is achieved with this compact FSS reflector when placed at a distance below the antenna. The measured results closely follow the simulated ones which proves feasibility of this design.

scholarly journals Gain Enhancement of Monopole Antenna using AMC Surface

2018 ◽  
Vol 7 (3) ◽  
pp. 69-74 ◽  
Author(s):  
F. Mouhouche ◽  
A. Azrar ◽  
M. Dehmas ◽  
K. Djafer
Keyword(s):  
Band Structure ◽  
Performance Comparison ◽  
Monopole Antenna ◽  
Dual Band ◽  
Antenna Gain ◽  
Magnetic Conductor ◽  
Frequency Bands ◽  
Gain Enhancement ◽  
Unit Cells ◽  
Ring Antenna

A CPW rectangular-ring antenna over an Artificial Magnetic Conductor (AMC) is presented in this work. The AMC is a designed as a dual-band structure having an array of unit cells and operates at 2.45GHz and 5.20 GHz. A CPW antenna uses this dual-band AMC structures as a back-plane. Performance comparison is carried out with and without incorporation of AMC. The simulated and measured results show that the combination of the AMC reflector and the antenna provide directional properties at both frequency bands. It has been found that the antenna gain increases by about 5 dB.

scholarly journals Suppressed Band Characteristics of an UWB Conical Monopole Antenna with Split Loops Based on the Equivalent Circuit

2017 ◽  
Vol 2017 ◽  
pp. 1-8 ◽  
Author(s):  
Eun-Seok Jang ◽  
Che-Young Kim ◽  
Dae-Geun Yang ◽  
Sung-Su Hong
Keyword(s):  
Equivalent Circuit ◽  
Mutual Inductance ◽  
Monopole Antenna ◽  
Dual Band ◽  
Equivalent Circuits ◽  
Uwb Antenna ◽  
Load Impedance ◽  
Measurement Results ◽  
Lc Resonator ◽  
Insight Into

In this study, the principle of band suppressing an UWB antenna by attaching a small resonator is explained by developing its equivalent circuit. The realized UWB antenna is a conical monopole antenna that contains a split loop for band suppression. The conical monopole antenna corresponds to a transmission line terminated with load impedance, and the split loop is an LC resonator. The coupling between the conical monopole antenna and the split loop is represented as mutual inductance. Equivalent circuits for the UWB antenna suppressing single band [WLAN] and dual band [WLAN, WiMAX] have been suggested, and these equivalent circuits provide insight into the performance characteristics of the developed band suppressed UWB antenna to which a small sized resonator is installed. Simulation and measurement results on the input impedance and VSWR of the proposed equivalent circuit are closely matched. Thus, the validity of the equivalent circuit is confirmed. The measurement results demonstrate that the proposed antenna exhibits a gain of over 3 dBi in the working band and has an omnidirectional radiation pattern. Band rejection has been also implemented by split loops.

Analysis of monopole antenna on circular disc by mode matching

2001 ◽  
Vol 18 (2) ◽  
pp. 185-187
Author(s):  
Baohua Sun ◽  
Fushun Zhang ◽  
Qizhong Liu
Keyword(s):  
Monopole Antenna ◽  
Circular Disc ◽  
Mode Matching

Erratum for: Analysis of antenna gain enhancement using new frequency selective surface superstate

2016 ◽  
Vol 58 (7) ◽  
pp. 1774-1774
Author(s):  
Moufida Bouslama ◽  
Moubarek Traii ◽  
Ali Gharsallah ◽  
Tayeb Ahmed Denidni
Keyword(s):  
Frequency Selective Surface ◽  
Antenna Gain ◽  
Gain Enhancement ◽  
Frequency Selective

scholarly journals A DETACHED ZERO INDEX METAMATERIAL LENS FOR ANTENNA GAIN ENHANCEMENT

2012 ◽  
Vol 132 ◽  
pp. 463-478 ◽  
Author(s):  
Fan-Yi Meng ◽  
Yue-Long Li ◽  
Kuang Zhang ◽  
Qun Wu ◽  
Joshua Le-Wei Li
Keyword(s):  
Antenna Gain ◽  
Gain Enhancement ◽  
Zero Index

scholarly journals Very compact UWB antenna with group delay improvement

2015 ◽  
Vol 12 (2) ◽  
pp. 197-204 ◽  
Author(s):  
Esmaeel Tahanian ◽  
Hamidreza Hasani
Keyword(s):  
Time Domain ◽  
Return Loss ◽  
Group Delay ◽  
Frequency Characteristics ◽  
Back Side ◽  
Antenna Gain ◽  
Uwb Antenna ◽  
Delay Variations ◽  
The Time Domain

In this paper, very compact (12mm?17mm) and simple UWB antenna is proposed. The achieved bandwidth of the presented antenna is from 3.05 GHz to 12.5 GHz and in the most of the bandwidth, the return loss is less than -20dB. In addition to frequency characteristics, time characteristics such as group delay variations for three different antenna positions, namely, front to front, back to back and side by side using CST MW studio are simulated and discussed. To improve the group delay variations, by changing the radius of the circle on the back side of the antenna, the antenna gain in different frequencies will be tuned, therefore, the time domain characteristics of the proposed antenna are greatly improved.

Equivalent Circuit (EC) Approximation of Miniaturized Elliptical UWB Antenna for Imaging of Wood

2020 ◽  
pp. 447-455
Author(s):  
Tale Saeidi ◽  
Sarmad Nozad Mahmood ◽  
Shahid M. Ali ◽  
Sameer Alani ◽  
Masood Rehman ◽  
...  
Keyword(s):  
Equivalent Circuit ◽  
Uwb Antenna
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