F-J Antenna Structure Compact Size with Impedance Ratio 13:1 Excited by Tapered CPW

2021 ◽  
Author(s):  
Amer T. Abed ◽  
Aqeel M. Jawad ◽  
Haider M. Jawad ◽  
Mahmood J. Abu-Alshaeer
Keyword(s):  
Antenna Structure ◽  
Impedance Ratio ◽  
Compact Size

Compact hybrid fractal antenna for wideband wireless applications

2016 ◽  
Vol 9 (5) ◽  
pp. 1191-1196 ◽  
Author(s):  
Yogesh Kumar Choukiker ◽  
Jagadish Chandra Mudiganti
Keyword(s):  
Impedance Matching ◽  
Ground Plane ◽  
Fractal Antenna ◽  
Koch Curve ◽  
Antenna Structure ◽  
Wireless Applications ◽  
Antenna Performance ◽  
Compact Size ◽  
Measured Impedance ◽  
Acceptable Agreement

A compact size hybrid fractal antenna is proposed for the application in wideband frequency range. The proposed antenna structure is the combination of Koch curve and self-affine fractal geometries. The Koch curve and self-affine geometries are optimized to achieve a wide bandwidth. The feed circuit is a microstrip line with a matching section over a rectangular ground plane. The measured impedance matching fractal bandwidth (S11 ≤ −10 dB) is 72.37% from 1.6 to 3.4 GHz. An acceptable agreement is obtained from the simulated and measured antenna performance parameters.

scholarly journals Design of Ultra-wideband Dielectric Resonator Antenna

2021 ◽  
Vol 16 ◽  
pp. 194-197
Author(s):  
Guan-Pu Pan ◽  
Jiun-Da Lin ◽  
Tsung-lin Li ◽  
Jwo-Shiun Sun
Keyword(s):  
Dielectric Resonator ◽  
High Gain ◽  
Hybrid Structure ◽  
Ultra Wideband ◽  
Impedance Bandwidth ◽  
Dielectric Resonator Antenna ◽  
Antenna Structure ◽  
Compact Size ◽  
New Material ◽  
Low Permittivity

In this paper, the new dielectric resonator antenna (DRA) is implemented by replacing the traditional dielectric resonator with a new material with low permittivity for ultra-wideband (UWB) application is presented and studied. A hybrid structure DRA was designed with parasitic slot to enhance the impedance bandwidth. The bandwidth met the specification of MB-OFDM for the bandwidth (3.168 GHz - 4.752 GHz). Finally, another antenna structure was designed. By applying the microstrip feed line, UWB and radiation characteristics are achieved. From the measured results, the proposed DRA showed good radiation pattern, high gain, wide bandwidth (3.03 GHz -10.7 GHz) and compact size. The bandwidth met the specification of MB-OFDM (3.168 GHz -10.56 GHz).

scholarly journals Design of Compact Broadband Omni directional Canonical Sleeve Antenna covering 500-3600 MHz

2018 ◽  
Vol 7 (2) ◽  
pp. 53-59
Author(s):  
C. S. Ram ◽  
D. Vakula ◽  
M. Chakravarthy
Keyword(s):  
Performance Metrics ◽  
Dipole Antenna ◽  
Simulation Studies ◽  
Antenna Structure ◽  
Communication Industry ◽  
Broad Bandwidth ◽  
Spectrum Monitoring ◽  
Compact Size ◽  
Directional Characteristics ◽  
Antenna Configuration

A novel compact broadband Canonical Sleeve Antenna (CSA) covering 500-3600 MHz with omni directional characteristics is presented in this paper. A new method is employed in which the radiating antenna structure is designed as combination of three different canonical structures: hemispherical, conical and cylindrical elements. To accomplish the broad bandwidth with compact size, dipole antenna is designed by using cylindrical sleeve over the hemispherical dipole with conical extensions and cylindrical attachments. Performance characteristics of CSA is simulated and compared with BiConical Antenna (BCA) and other antenna configurations and found to be best antenna configuration with compact form factor. The antenna has height of 111.43 mm and diameter of 116.66 mm. Simulation studies are carried out using CST Microwave Studio. The simulated results are validated by fabricating CSA and evaluating its performance metrics. CSA has 7.2:1 bandwidth with measured VSWR <2.7:1 and Gain varies from 0 to 3.6 dBi. The antenna finds use in wireless communication industry, spectrum monitoring and defence applications.

Analysis and Development of an Efficient Cross-Slot Loaded Compact Electromagnetic Band Gap Antenna

2021 ◽  
Vol 36 (6) ◽  
pp. 734-739
Author(s):  
El Amjed Hajlaoui ◽  
Ziyad Almohaimeed
Keyword(s):  
Computer Simulation ◽  
Band Gap ◽  
Circular Polarization ◽  
Radiation Efficiency ◽  
Antenna Structure ◽  
Electromagnetic Band Gap ◽  
Circularly Polarized ◽  
Compact Size ◽  
Operating Bandwidth ◽  
Simulation Results

This paper is devoted to a novel Electromagnetic Band Gap (EBG) single-feed circularly polarized microstrip EBG antenna with compact size proposed for C-Band applications. The antenna structure will include eight slits introduced at the boundary and the corners in the radiating square patch with a cross-slot at the center. The provided study will effectively approve the various proposed structures and interest occupied by these types of antennas in the enhancement of output parameters (gain, directivity, radiation efficiency, and bandwidth) without much affecting the operating bandwidth at C-band. At first, the concept and the realization of a directive and circularly polarized antenna using an electromagnetic band gap material whose circular polarization is generated by the structure itself is discussed. The analysis and simulation results are presented for an antenna operating at 6.1 GHz using computer Simulation Technologies (CST). Furthermore, the new compact circular polarized EBG antenna, compared to experimental results, will confirm the pre-studied goal of these kinds of antennas such as radiation efficiency, polarization purity, radiation efficiency, high directivity, and gain.

Complementary SRR-Based Reflector to Enhance Microstrip Antenna Performance

2021 ◽  
Vol 36 (6) ◽  
pp. 779-787
Author(s):  
Mustafa Ucar
Keyword(s):  
Microstrip Antenna ◽  
Split Ring Resonator ◽  
Ieee 802.11B ◽  
Split Ring ◽  
Antenna Structure ◽  
Complementary Split Ring Resonator ◽  
Antenna Performance ◽  
Compact Size ◽  
Electrical Permittivity ◽  
Good Agreement

In this paper, complementary split ring resonator (SRR) based reflector to enhance the printed slot dipole (PSD) antenna performance is introduced. The numerically calculated return-loss, directivity and radiation pattern results of the PSD antenna, with (w/) and without (w/o) CSRR element etched on reflector plane are presented and investigated. Numerical analysis and modelling of the proposed design are carried out using CST Microwave Studio simulator based on the finite integration technique. According to the simulation results, with the inclusion of the CSRR-based reflector into the PSD antenna, the directivity is increased by values changes from 0.6 dB to 4.25 dB through the operation band, while an improvement in bandwidth (~2.1%) is seen. It is also shown that this improvement in antenna performance is due to the -negative (ENG) behavior of CSRR structures. Prototype of the proposed antenna is fabricated using Arlon DiClad 880 substrate with electrical permittivity ofεr= 2.2. A quite good agreement between simulation and measurement is obtained. In this study, it is shown that the radiation performance of the antenna can be increased easily by using the CSRR element as a reflector in the antenna structure with a new enhancement approach. Also, the proposed antenna with a compact size of 0.27λ× 0.41λ is appropriate for operating in IEEE 802.11b/g/n/ax (2.4 GHz) WLAN applications.

scholarly journals A New and Compact Wide-Band Microstrip Filter-Antenna Design for 2.4 GHz ISM Band and 4G Applications

Electronics ◽  
2020 ◽  
Vol 9 (7) ◽  
pp. 1084 ◽  
Author(s):  
Yasir I. A. Al-Yasir ◽  
Mohammed K. Alkhafaji ◽  
Hana’a A. Alhamadani ◽  
Naser Ojaroudi Parchin ◽  
Issa Elfergani ◽  
...  
Keyword(s):  
Dielectric Material ◽  
Wide Band ◽  
Antenna Design ◽  
Impedance Bandwidth ◽  
Band Pass Filter ◽  
Pass Filter ◽  
Antenna Structure ◽  
Ism Band ◽  
Centre Frequency ◽  
Compact Size

A new and compact four-pole wide-band planar filter-antenna design is proposed in this article. The effect of the dielectric material type on the characteristics of the design is also investigated and presented. The filter-antenna structure is formed by a fourth-order planar band-pass filter (BPF) cascaded with a monopole microstrip antenna. The designed filter-antenna operates at a centre frequency of 2.4 GHz and has a relatively wide-band impedance bandwidth of about 1.22 GHz and a fractional bandwidth (FBW) of about 50%. The effects of three different types of substrate material, which are Rogers RT5880, Rogers RO3003, and FR-4, are investigated and presented using the same configuration. The filter-antenna design is simulated and optimised using computer simulation technology (CST) software and is fabricated and measured using a Rogers RT5880 substrate with a height (h) of 0.81 mm, a dielectric constant of 2.2, and a loss tangent of 0.0009. The structure is printed on a compact size of 0.32 λ0 × 0.30 λ0, where λ0 is the free-space wavelength at the centre frequency. A good agreement is obtained between the simulation and measurement performance. The designed filter-antenna with the achieved performance can find different applications for 2.4 GHz ISM band and 4G wireless communications.

scholarly journals Measurement Engineering to Design a Truncated Ground Plane Compact Circular Ring Monopole Patch Antenna for Ultra Wideband Applications

2021 ◽  
Author(s):  
syed zeeshan Ali ◽  
Ikrame E Khuda ◽  
Kamran Raza ◽  
Mansoor Ebrahim
Keyword(s):  
Patch Antenna ◽  
Ground Plane ◽  
Wide Band ◽  
Circular Ring ◽  
Ultra Wideband ◽  
Impedance Bandwidth ◽  
Antenna Structure ◽  
Measurement Engineering ◽  
Compact Size ◽  
Compact Design

Abstract In this paper, using in-depth simulations and measurements, a simple and compact design is engineered for making a circular ring microstrip patch antenna radiating element which is suitable for different ultra wide band(UWB) applications. This design approach is different because it has not utilized the usual method of using a set of electromagnetic equations and calculations to make the radiating antenna. Measurements and simulations were performed on Microwave CST. Using this measurement engineering approach, novelty of proposed antenna structure is obtained by making the required changes in the ground plane. The measurements showed that truncating the ground plane by a square shape structure of 2.5mm by 2.5mm size at the feed point was practically significant to provide an impedance bandwidth (\({S}_{11}cript>\)) ranging from 2.75 GHz to 32.035 GHz with a VSWR which is less than 2. For this entire bandwidth the directivity has shown a variation from 0.8 dBi to 7.9 dBi. The compact size (33mm x28mm x1.57mm), low design complexity, very high bandwidth, good directivity and satisfying VSWR has made this antenna unique among all previously presented UWB antennas.

A compact high gain wideband millimeter wave 1 × 2 array antenna for 26/28 GHz 5G applications

Circuit World ◽  
2021 ◽  
Vol ahead-of-print (ahead-of-print) ◽  
Author(s):  
Yousra Ghazaoui ◽  
Mohammed EL Ghzaoui ◽  
Sudipta Das ◽  
BTP Madhav ◽  
Ali el Alami
Keyword(s):  
Millimeter Wave ◽  
Design Methodology ◽  
High Gain ◽  
Array Antenna ◽  
Power Divider ◽  
Wave Band ◽  
Wide Bandwidth ◽  
Antenna Structure ◽  
Content Type ◽  
Compact Size

Purpose This paper aims to present the design, fabrication and analysis of a wideband, enhanced gain 1 × 2 patch antenna array with a simple profile structure to meet the desired antenna traits, such as wide bandwidth, high gain and directional patterns expected for the upcoming fifth-generation (5G) wireless applications in the millimeter wave band. To enhance these parameters (bandwidth and gain), a new antenna geometry by using a T-junction power divider is presented. Design/methodology/approach The theory behind this paper is connected with advancements in the 5G communications related to antennas. The methodology used in this work is to design a high gain array antenna and to identify the best possible power divider to deliver the power in an optimized way. The design methodology adopts several steps like the selection of proper substrate material as per the design specification, size of the antenna as per the frequency of operation and application-specific environment condition. The simulation has been performed on the designed antenna in the electromagnetic simulation tool (high-frequency structure simulator [HFSS]), and optimization has been done with parametric analysis, and then the final array antenna model is proposed. The proposed array contains 2-patch elements excited by one port adapted to 50 Ω through a T-junction power divider. The 1 × 2 array configuration with the suggested geometry helps to improve the overall gain of the antenna, and the implementation of the T-junction power divider provides enhanced bandwidth. The proposed array designed using a 1.6 mm thick flame retardant substrate occupies a compact area of 14 × 12.14 mm2. Findings The prototype of the array antenna is fabricated and measured to validate the design concept. A good agreement has been reached between the measured and simulated antenna parameters. The measured results confirm its wideband and high gain characteristics, covering 24.77–28.80 GHz for S11= –10 dB with a peak gain of about 15.16 dB at 27.65 GHz. Originality/value The proposed antenna covers the bandwidth requirements of the 26 GHz n258 band (24.25–27.50 GHz) to be deployed in the UK and Europe. The suggested antenna structure also covers the federal communications commission (FCC)-regulated 28 GHz n261 band (27.5–28.35 GHz) to be deployed in America and Canada. The low profile, compact size, simple structure, wide bandwidth, high gain and desired directional radiation patterns confirm the applicability of the suggested array antenna for the upcoming 5 G wireless systems.

Small embedded LTE/WWAN antenna integrated with keyboard ground plane in a laptop computer

2016 ◽  
Vol 9 (4) ◽  
pp. 959-964
Author(s):  
Shu-Chuan Chen ◽  
Yun-Tsan Lee ◽  
Po-Wei Wu
Keyword(s):  
Ground Plane ◽  
Area Network ◽  
Wide Area Network ◽  
Laptop Computer ◽  
Antenna Structure ◽  
Term Evolution ◽  
Resonant Modes ◽  
Compact Size ◽  
Wide Operating

A novel small embedded long-term evolution/wireless wide area network (LTE/WWAN) antenna integrated with the keyboard ground plane in a laptop computer is presented. The antenna is installed on a notched region (40 × 8 mm2) of the keyboard ground plane at a distance of 10 mm from the laptop computer hinge. A coupled-fed loop antenna was used because of its suitability for integration with the ground plane and achieving wide operating bands. This antenna can not only be configured to have a compact configuration but also be designed to excite several resonant modes of the hinge slot between the display ground plane and the keyboard ground plane. The proposed antenna comprises a hook-shaped strip and a shorted strip, which together form a coupled-fed loop that not only has a compact size when printed on a 0.8-mm-thick FR4 substrate 40 × 8 mm2in size but also provides eight-band LTE/WWAN operation. The proposed antenna can cover LTE/WWAN operation in the 698–960 and 1710–2690 MHz bands. Details of the antenna structure are provided here. The proposed antenna was fabricated and tested, and measurement and simulation results are presented. The measured antenna efficiency was approximately 45–80% in the lower band and approximately 52–75% in the upper band.

Compact wideband folded strip monopole antenna for brain stroke detection

2020 ◽  
pp. 1-10
Author(s):  
Payal Bhardwaj ◽  
Ritesh Kumar Badhai
Keyword(s):  
Brain Tissue ◽  
Failure Detection ◽  
Monopole Antenna ◽  
Ultra Wideband ◽  
Head Model ◽  
Human Brain Tissue ◽  
Antenna Structure ◽  
Compact Size ◽  
Brain Stroke ◽  
Brain Stroke Detection

Abstract This paper introduces the CPW fed monopole antenna operating at multiple frequencies covering Ultra High Frequency (UHF) bands, suitable for biomedical applications. The planar antenna structure comprises an open loop and a dual folded monopole of optimized length. The antenna exhibits ultra-wideband frequency of operation ranges from 740 MHz to 4.02 GHz covering the frequency bands suitable for head imaging and heart failure detection. The proposed antenna has a compact size of 0.098λ × 0.079λ × 0.019λ where λ indicates wavelength corresponding to the lowest operating frequency. The antenna is further simulated on the human head model to corroborate applications for brain stroke detection. The specific absorption rate (SAR) value of the proposed antenna is compliant with SAR requirements set by IEEE standards. To experimentally verify the parameters of the proposed antenna design, the antenna is tested on the brain tissue model prepared by materials having dielectric properties like human brain tissue. The peak gain of the antenna, when tested on the human phantom, is 6.8 dBi.

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