scholarly journals Analysis of Glass-Reinforced Epoxy Material for Radio Frequency Resonator

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
M. R. Zaman ◽  
M. T. Islam ◽  
N. Misran ◽  
Baharudin Yatim
Keyword(s):  
Radio Frequency ◽  
Ground Plane ◽  
Material Behavior ◽  
Dual Band ◽  
Coupling Mechanism ◽  
Microstrip Resonator ◽  
X Band ◽  
Final Design ◽  
Epoxy Material ◽  
Line Technology

A radio frequency (RF) resonator using glass-reinforced epoxy material for C and X band is proposed in this paper. Microstrip line technology for RF over glass-reinforced epoxy material is analyzed. Coupling mechanism over RF material and parasitic coupling performance is explained utilizing even and odd mode impedance with relevant equivalent circuit. Babinet’s principle is deployed to explicate the circular slot ground plane of the proposed resonator. The resonator is designed over four materials from different backgrounds which are glass-reinforced epoxy, polyester, gallium arsenide (GaAs), and rogers RO 4350B. Parametric studies and optimization algorithm are applied over the geometry of the microstrip resonator to achieve dual band response for C and X band. Resonator behaviors for different materials are concluded and compared for the same structure. The final design is fabricated over glass-reinforced epoxy material. The fabricated resonator shows a maximum directivity of 5.65 dBi and 6.62 dBi at 5.84 GHz and 8.16 GHz, respectively. The lowest resonance response is less than −20 dB for C band and −34 dB for X band. The resonator is prototyped using LPKF (S63) drilling machine to study the material behavior.

scholarly journals Wideband monopole antenna with dual band rejection characteristics

2021 ◽  
Vol 72 (4) ◽  
pp. 268-272
Author(s):  
Susmita Bala ◽  
P. Soni Reddy ◽  
Sushanta Sarkar ◽  
Partha Pratim Sarkar
Keyword(s):  
Communication Systems ◽  
Ground Plane ◽  
Data Communication ◽  
Monopole Antenna ◽  
Dual Band ◽  
X Band ◽  
Open Ring ◽  
Printed Monopole Antenna ◽  
Printed Monopole ◽  
Rejection Band

Abstract A wideband printed monopole antenna with two rejection bands is proposed in this article. The antenna provides a wideband from 5.4 GHz to 17.2 GHz with two rejection bands covering 6.9 to 7.4 GHz and 8.3 to 9.2 GHz with two peak notch frequencies of 7.2 GHz and 8.6 GHz respectively. Tested peak gain at two peak notch frequencies of 7.2 GHz and 8.6 GHz are 2.5 dBi and −1.5 dBi respectively. These two rejection bands are effectively used to avoid undesired intrusion from the C band and the X band. The lower rejection band has been realized by cutting an open ring circular slot on the metal patch whereas U like slot has been inserted on the ground plane just beneath the feed line to achieve the upper rejection band. Simulated and tested S 11 parameter, gain, radiation efficiency, E-H radiation patterns, and surface currents of the antenna are presented here. The antenna uses small dimensions and it is very simple to design. The proposed antenna confirms that it is useful for short-range and fast data communication systems.

Design of a Compact UWB Antenna Using Two Modified U-Shaped Slots for Satellite Frequency Rejection in C-Band and X-Band

2014 ◽  
Vol 538 ◽  
pp. 189-192
Author(s):  
Li Li ◽  
Zhang Zhuo Zhao ◽  
Xiao Li Yin
Keyword(s):  
Frequency Band ◽  
Ground Plane ◽  
Monopole Antenna ◽  
Dual Band ◽  
Uwb Antenna ◽  
Total Size ◽  
Compact Structure ◽  
X Band

A novel printed microstrip-fed monopole antenna with a dual band notched characteristic has been designed and analyzed. The antenna has a rather compact structure with total size of 18×12×1.6mm3. Band notched has been created by inserting slot on the radiating patch and on the microstrip. Wide impendence bandwidth is produced by modify the ground plane. Good radiation performance is achieved in the frequency band of 3 to over 13 GHz with dual band notched of 3.7-4.2 and 7.0-8.0 GHz.

scholarly journals Miniaturized Dual Band Multislotted Patch Antenna on Polytetrafluoroethylene Glass Microfiber Reinforced for C/X Band Applications

2014 ◽  
Vol 2014 ◽  
pp. 1-14 ◽  
Author(s):  
M. T. Islam ◽  
M. Samsuzzaman
Keyword(s):  
Ground Plane ◽  
Measured Data ◽  
Dual Band ◽  
Rectangular Patch ◽  
Low Profile ◽  
X Band ◽  
Left And Right ◽  
Good Agreement ◽  
Microstrip Feed ◽  
Matching Band

This paper introduces a new configuration of compact, triangular- and diamond-slotted, microstrip-fed, low-profile antenna for C/X band applications on polytetrafluoroethylene glass microfiber reinforced material substrate. The antenna is composed of a rectangular-shaped patch containing eight triangles and two diamond-shaped slots and an elliptical-slotted ground plane. The rectangular-shaped patch is obtained by cutting two diamond slots in the middle of the rectangular patch, six triangular slots on the left and right side of the patch, and two triangular slots on the up and down side of the patch. The slotted radiating patch, the elliptical-slotted ground plane, and the microstrip feed enable the matching bandwidth to be widened. A prototype of the optimized antenna was fabricated on polytetrafluoroethylene glass microfiber reinforced material substrate using LPKF prototyping machine and investigated to validate the proposed design. The simulated results are compared with the measured data, and good agreement is achieved. The proposed antenna offers fractional bandwidths of 13.69% (7.78–8.91 GHz) and 10.35% (9.16–10.19 GHz) where S11< −10 dB at center frequencies of 8.25 GHz and 9.95 GHz, respectively, and relatively stable gain, good radiation efficiency, and omnidirectional radiation patterns in the matching band.

scholarly journals Analysis and design of a compact ultra-wideband antenna with WLAN and X-band satellite notch

2020 ◽  
Vol 10 (4) ◽  
pp. 4261
Author(s):  
Mohssine El Ouahabi ◽  
Aziz Dkiouak ◽  
Alia Zakriti ◽  
Mohamed Essaaidi ◽  
Hanae Elftouh
Keyword(s):  
Satellite Communication ◽  
Ground Plane ◽  
Ultra Wideband ◽  
Ring Resonators ◽  
Dual Band ◽  
Impedance Bandwidth ◽  
Geometrical Parameters ◽  
Analysis And Design ◽  
X Band ◽  
Compact Size

<span lang="EN-US">A compact design of ultra-wideband (UWB) antenna with dual band-notched characteristics based on split-ring resonators (SRR) are investigated in this paper. The wider impedance bandwidth (from 2.73 to 11.34 GHz) is obtained by using two symmetrical slits in the radiating patch and another slit in the partial ground plane. The dual band-notch rejection at WLAN and X-band downlink satellite communication system are obtained by inserting a modified U-strip on the radiating patch at 5.5 GHz and embedding a pair of rectangular SRRs on both sides of the microstrip feed line at 7.5 GHz, respectively. The proposed antenna is simulated and tested using CST MWS high frequency simulator and exhibits the advantages of compact size, simple design and each notched frequency band can be controlled independently by using the SRR geometrical parameters. Therefore, the parametric study is carried out to understand the mutual coupling between the dual band-notched elements. To validate simulation results of our design, a prototype is fabricated and good agreement is achieved between measurement and simulation. Furthermore, a radiation patterns, satisfactory gain, current distribution and VSWR result at the notched frequencies make the proposed antenna a suitable candidate for practical UWB applications.</span>

scholarly journals Compact Circularly Polarized Multiband Antennas for RFID Applications

2014 ◽  
Vol 2014 ◽  
pp. 1-10 ◽  
Author(s):  
H. M. El Misilmani ◽  
M. Al-Husseini ◽  
K. Y. Kabalan ◽  
A. El-Hajj
Keyword(s):  
Radio Frequency ◽  
Radio Frequency Identification ◽  
Microstrip Line ◽  
Ground Plane ◽  
Dual Band ◽  
Circularly Polarized ◽  
Multiband Antennas ◽  
Compact Size ◽  
Frequency Identification ◽  
Rfid Applications

This paper presents multiband circularly polarized (CP) antennas for radio frequency identification (RFID). A coax-fed and a microstrip-line-fed antennas having optimized cross-slots in their patches are first designed for dual-band CP operation. The microstrip-line-fed design is then modified, by incorporating a U-shaped slot in its partial ground plane, to achieve additional operation band with a CP characteristic. Simulation and measured results of the presented designs are reported. The measured results are in accordance with the computed ones. The compact size and CP property make these designs suitable for RFID applications.

scholarly journals A Double Combined Symmetric T-shaped Slots and Rotated L-shaped Strips Inspired UWB Antenna for C and X-band Elimination Filters

2020 ◽  
Vol 9 (1) ◽  
pp. 35-40
Author(s):  
M. Elhabchi ◽  
M. N. Srifi ◽  
R. Touahni
Keyword(s):  
Communication Systems ◽  
Satellite Communication ◽  
Ground Plane ◽  
Surface Current ◽  
Dual Band ◽  
Uwb Antenna ◽  
Ansoft Hfss ◽  
Operating Frequency Range ◽  
X Band ◽  
Parametric Effects

In this paper, we present a modified UWB antenna with hexagonal slotted ground plane inspired with a double combined symmetric T-shaped slots and dual rotated L-shaped strip for dual band notched characteristics. Initially, the operating frequency range is from 3GHz to 12 GHz. To eliminate the unwanted C-band (3.625-4.2GHz) and the entire uplink and downlink of X-band satellite communication systems (7.25 -8.39 GHz) frequency bands, we are investigating the conventional UWB patch antenna and loaded it with a mentioned strips and slots respectively. The performances of the antenna are optimized both by CST Microwave Studio and Ansoft HFSS. To further analyze the parametric effects of the slots and strips, the surface current distribution is presented and discussed. The antenna gain versus frequency gives an acceptable value except the notched band regions, these values are   reduced from its normal  to be  a negative in  the notched bands (3.625-4.2GHz) and (7.25 to 8.39 GHz).

scholarly journals A Slotted Microstrip Antenna with Fractal Design for Surveillance Based Radar Applications in X- Band

2018 ◽  
Vol 7 (3.3) ◽  
pp. 64
Author(s):  
Shailendra Kumar Dhakad ◽  
Umesh Dwivedi ◽  
Sanyog Rawat ◽  
Yash Agarwal ◽  
Anay Joshi
Keyword(s):  
Patch Antenna ◽  
Microstrip Antenna ◽  
Return Loss ◽  
Ground Plane ◽  
Antenna Design ◽  
Operating Characteristics ◽  
Design Elements ◽  
X Band ◽  
Final Design ◽  
Radar Applications

This paper proposes a unique micro-strip patch antenna which has a hexagonal fractal pattern which can mainly be used for ground based surveillance radar applications. To further optimize the functioning of the antenna, multiple slots have been added to the ground plane, and a stepped pattern has been implemented to increase the current density and the gain. A detailed study of the stages of development of the antenna has been made, illustrating the effect that various design elements have on the operating characteristics of the final design. There is specific emphasis on the use of slots in the ground plane. Variations in return loss, gain, VSWR, operating frequency and bandwidth with changes in the design of the ground plane have been documented. The antenna is designed to perform in the X-band, more specifically around 9 GHz, making it well suited for short range search. The final iteration of the antenna design, including various stages of slotting in the ground plane, works at 8.7 GHz, which is well within the X-band range, and has a return loss of around 30 dB.  

scholarly journals Gain Enhancement Modelling of Coplanar Waveguide fed Circular Monopole Antenna with EBG Placement

2019 ◽  
Vol 8 (6) ◽  
pp. 1986-1991
Keyword(s):  
Satellite Communication ◽  
Coplanar Waveguide ◽  
Ground Plane ◽  
Monopole Antenna ◽  
Antenna Design ◽  
Dual Band ◽  
Electromagnetic Bandgap ◽  
Gain Enhancement ◽  
X Band ◽  
Simulation Results

A circular monopole antenna with coplanar waveguide feeding is designed for wideband applications. Different electromagnetic bandgap structures are placed beneath the antenna ground plane to improve the gain and the radiation efficiency. The depicted model occupies the dimension of 50X50X1.60 mm on FR4 substrate with dielectric constant of 4.3. Aerial operating in the dual band of 1.5-3.6 GHz (GPS, LTE, Bluetooth and Wi-Fi applications) and 4.8-15 GHz (WLAN, X-Band and Satellite communication applications) with bandwidth of 2.10 and 10.20 GHz respectively. The final novel antenna design provides good correlation with simulation results.

scholarly journals Realizing UWB Antenna Array with Dual and Wide Rejection Bands Using Metamaterial and Electromagnetic Bandgaps Techniques

Micromachines ◽  
2021 ◽  
Vol 12 (3) ◽  
pp. 269
Author(s):  
Ayman A. Althuwayb ◽  
Mohammad Alibakhshikenari ◽  
Bal S. Virdee ◽  
Pancham Shukla ◽  
Ernesto Limiti
Keyword(s):  
Antenna Array ◽  
Ground Plane ◽  
Ultra Wideband ◽  
Dual Band ◽  
Area Network ◽  
Electromagnetic Bandgap ◽  
Uwb Antenna ◽  
Average Gain ◽  
Left Handed ◽  
Notched Band

This research article describes a technique for realizing wideband dual notched functionality in an ultra-wideband (UWB) antenna array based on metamaterial and electromagnetic bandgap (EBG) techniques. For comparison purposes, a reference antenna array was initially designed comprising hexagonal patches that are interconnected to each other. The array was fabricated on standard FR-4 substrate with thickness of 0.8 mm. The reference antenna exhibited an average gain of 1.5 dBi across 5.25–10.1 GHz. To improve the array’s impedance bandwidth for application in UWB systems metamaterial (MTM) characteristics were applied it. This involved embedding hexagonal slots in patch and shorting the patch to the ground-plane with metallic via. This essentially transformed the antenna to a composite right/left-handed structure that behaved like series left-handed capacitance and shunt left-handed inductance. The proposed MTM antenna array now operated over a much wider frequency range (2–12 GHz) with average gain of 5 dBi. Notched band functionality was incorporated in the proposed array to eliminate unwanted interference signals from other wireless communications systems that coexist inside the UWB spectrum. This was achieved by introducing electromagnetic bandgap in the array by etching circular slots on the ground-plane that are aligned underneath each patch and interconnecting microstrip-line in the array. The proposed techniques had no effect on the dimensions of the antenna array (20 mm × 20 mm × 0.87 mm). The results presented confirm dual-band rejection at the wireless local area network (WLAN) band (5.15–5.825 GHz) and X-band satellite downlink communication band (7.10–7.76 GHz). Compared to other dual notched band designs previously published the footprint of the proposed technique is smaller and its rejection notches completely cover the bandwidth of interfering signals.

Sign in / Sign up

Export Citation Format

Share Document