Conformal Load-Bearing Antenna Structures—Mechanical Loading Considerations

One of the important functions of antennas is to facilitate wireless communication. The IEEE 802.11 is part of the IEEE802 set of local area network technical standards, and specifies the media access control and physical layer protocols for implementing wireless local area network computer communication. The network physical layer protocol with a centre frequency of 2.4 GHz has a bandwidth of 22 MHz. A conformal load-bearing antenna structure (CLAS) facilitating this communication band that is tuned to 2.4 GHz must remain within this bandwidth. The aim of this paper is to investigate the effects of mechanical loading imposed on a load-bearing patch antenna with respect to its ability to remain within the specified bandwidth. The mechanical loading configurations considered include tensile, biaxial, and twisting. This paper will also report on the response of the antenna patch to the presence of a disbond between the metallised antenna and its substrate, which can arise due to fabrication anomalies and operational usage. This numerical work will assist in the design of experimental testing of the mechanical and electromagnetic properties of an embedded CLAS, which will ultimately be used to inform selection of appropriate regions to place patch antennas on load-bearing deformable surfaces.

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IEEE 802.11 Tutorial

10.31224/osf.io/t8rjk ◽

2018 ◽

Author(s):

Kiramat

Keyword(s):

Access Control ◽

Ieee 802.11 ◽

Wireless Local Area Network ◽

Local Area Network ◽

Local Area ◽

Physical Layer ◽

Media Access Control ◽

Area Network ◽

Media Access ◽

Computer Communications

IEEE 802.11 is a set of media access control (MAC) and physical layer (PHY) specifications for implementing wireless local area network (WLAN) computer communications. Maintained by the Institute of Electrical and Electronics Engineers (IEEE) LAN/MAN Standards Committee (IEEE 802). This document highlights the main features of IEEE 802.11n variant such as MIMO, frame aggregation and beamforming along with the problems in this variant and their solutions

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Pembagian jaringan komputer menggunakan virtual local area network guna mendukung perpustakaan digital

Jurnal Kajian Informasi dan Perpustakaan ◽

10.24198/jkip.v8i2.25218 ◽

2020 ◽

Vol 8 (2) ◽

pp. 133

Author(s):

Hero Wintolo ◽

Amalia Farhati

Keyword(s):

Digital Library ◽

Digital Libraries ◽

Computer Network ◽

Local Area Network ◽

Local Area ◽

Area Network ◽

Network Access ◽

Network Computer ◽

Network Equipment ◽

Library Network

Digital libraries have been widely applied in educational institutions in Indonesia as a complement conventional libraries. The purpose of this research is to know division computer network access at the Adisutjipto Intitute of Technology (STTA) library. The research method used is a qualitative method using Prepare Plan Design Implement Operate and Optimize (PPDIOO). The result research is that people who have internet access will not be able to enter the digital library network. Computer network users who want to access digital libraries must log into the computer network that provides digital books in the library using a Virtual Local Area Network (VLAN). Making this VLAN requires a computer network infrastructure in the form of a Local Area Network (LAN) and computer network equipment in the form of a switch that can be used to configure multiple VLANs in a LAN. Some of the existing services in the library are placed on one VLAN and the digital library is placed on another VLAN. From the test results, it can be seen that between computers that provide services in the library on VLAN 2 cannot communicate via the connecting network to VLAN 1 where the digital library with website based services will be located. This is evidenced by the ping command which generates request time out information. VLANs network in the STTA library have been able to provide support for plans to improve services to members and academicians in the form of a digital library.

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Physical layer design alternatives for outdoor high speed wireless local area network

10.1109/icc.1996.541302 ◽

2002 ◽

Cited By ~ 1

Author(s):

C. Trabelsik ◽

E. Torun

Keyword(s):

High Speed ◽

Wireless Local Area Network ◽

Local Area Network ◽

Local Area ◽

Physical Layer ◽

Area Network ◽

Design Alternatives

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A Compact Semi-Circular and Arc-Shaped Slot Antenna for Heterogeneous RF Front-Ends

Electronics ◽

10.3390/electronics8101123 ◽

2019 ◽

Vol 8 (10) ◽

pp. 1123 ◽

Cited By ~ 5

Author(s):

Zebiri ◽

Sayad ◽

Elfergani ◽

Iqbal ◽

Mshwat ◽

...

Keyword(s):

Wireless Local Area Network ◽

Local Area Network ◽

Personal Communication ◽

Local Area ◽

Dual Band ◽

Slot Antenna ◽

Impedance Bandwidth ◽

Area Network ◽

Antenna Structure ◽

High Frequency Structure Simulator

In this paper, a new miniaturized compact dual-band microstrip slot antenna is presented. To achieve the dual-band characteristics, two adjunct partial arc-shaped small slots are joined to two main circular slots embedded in the ground of the antenna structure. With a reduced size of 30 × 28.5 × 0.8 mm3, the proposed antenna presents a dual-band characteristic. The design is optimized using a High Frequency Structure Simulator (HFSS) followed by experimental verifications. An impedance bandwidth, for S11≤10 dB, that covers the 1.8 GHz and 2.4 GHz bands is accomplished, which makes the proposed antenna basically suitable for hand-held devices and medical applications. More applications such as digital communication system (DCS) 1.71–1.88 GHz, personal communication services (PCS) 1.85–1.99 GHz, Universal and mobile telecommunications system UMTS 1.92–2.17 GHz, Bluetooth 2.4–2.5 GHz, and Wi-Fi 2.4–2.454 GHz, Industrial Scientific and Medical radio frequency (RF) band ISM-2.4 GHz, Wireless Local Area Network (WLAN-2.4)are possible by simply changing one of the geometrical antenna dimensions. The antenna is characterized by stable radiation patterns as well.

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Super wideband antenna with single band suppression

International Journal of Microwave and Wireless Technologies ◽

10.1017/s1759078715000963 ◽

2015 ◽

Vol 9 (1) ◽

pp. 143-150 ◽

Cited By ~ 13

Author(s):

Murli Manohar ◽

Rakhesh Singh Kshetrimayum ◽

Anup Kumar Gogoi

Keyword(s):

Wireless Local Area Network ◽

Local Area Network ◽

Ground Plane ◽

Local Area ◽

Ultra Wideband ◽

Impedance Bandwidth ◽

Area Network ◽

Antenna Structure ◽

Ieee 802.11A ◽

Feed Region

In this paper, a band-notched compact printed monopole super wideband (SWB) antenna has been designed and fabricated. The SWB antenna composed of a radiating patch with a 50 Ω triangular tapered feed line which is connected through a feed region, and a chamfered ground plane (CGP), that covers the frequency band from 0.9–100 GHz (ratio bandwidth of 111.1:1) with a reflection coefficient |S11| < −10 dB, except in the notched band of 4.7–6 GHz for Wireless local area network IEEE 802.11a and HIPERLAN/2 WLAN band. To realize the band notch characteristics a C-shape parasitic element is employed near the CGP etched with two symmetrical L-slots and placed under the radiating patch. Proposed antenna structure occupies a relatively small space (30 × 40 × 0.787 mm3) and achieved much wider impedance bandwidth as well as higher gain compared with the existing ultra wideband and SWB antennas.

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A Reconfigurable Notched Band Monopole Antenna for C-Band Applications

International Journal of Electrical and Electronic Engineering & Telecommunications ◽

10.18178/ijeetc.10.6.389-396 ◽

2021 ◽

pp. 389-396

Author(s):

Samar A. Refaat ◽

◽

Hesham A. Mohamed ◽

Abdelhady M. Abdelhady ◽

Ashraf S. Mohra

Keyword(s):

Wireless Local Area Network ◽

Local Area Network ◽

Local Area ◽

Monopole Antenna ◽

Area Network ◽

Defected Ground Structure ◽

Antenna Structure ◽

High Frequency Structure Simulator ◽

Antenna Performance ◽

Measurement Results

In this paper, a wideband monopole antenna with reconfigurable frequency notch through wireless local area network (WLAN) (5.15-5.35GHz and 5.725-5.825GHz) or future wireless fidelity 6GHz (Wi-Fi-6E) (5.925-7.125GHz) band for C-band applications is presented. The conventional/basic monopole antenna consists of four-leaf clover antenna structure with cascaded feeder and Defected Ground Structure (DGS). The basic antenna is designed and then simulated using Computer Simulation Technology (CST) and High-Frequency Structure Simulator (HFSS) readymade software programs. The antenna covering an operational bandwidth extends from 4.2GHz to 9.2GHz while the gain is around 4.0dBi. Two simple resonator conductors are added near the thin feeder of antenna to realize the notched frequency. The rejected frequency within WLAN or Wi-Fi 6E bands is controlled by the resonator conductor lengths, so Positive-Intrinsic-Negative (PIN) diodes switches are inserted to achieve the required length for each rejected band. Finally, each of the basic antenna and the proposed notched antenna are fabricated and measured. The measurement results are in good agreements with the simulated results of CST and HFSS, providing good antenna performance and sharp notches with good rejection values.

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Design of physical layer management module of optical wireless local-area network

10.1117/12.480493 ◽

2002 ◽

Author(s):

Feng Jiang ◽

Haitao Zhang ◽

Mali Gong ◽

Ping Yan ◽

Xin Yang ◽

...

Keyword(s):

Wireless Local Area Network ◽

Local Area Network ◽

Local Area ◽

Physical Layer ◽

Area Network ◽

Optical Wireless

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A Planar Antenna Reconfigured in Frequency for Wireless Services

International Journal of Recent Technology and Engineering - 2 ◽

10.35940/ijrte.b2714.078219 ◽

2019 ◽

Vol 8 (2) ◽

pp. 4342-4346

Keyword(s):

High Frequency ◽

Wireless Local Area Network ◽

Local Area Network ◽

Narrow Band ◽

Wide Band ◽

Local Area ◽

Simulation Software ◽

Area Network ◽

Antenna Structure ◽

High Frequency Structure Simulator

An antenna that exhibits reconfiguration in frequency is introduced in this paper that can act as an ultrawide band antenna as well as a narrow band antenna according to the switching status of the design. This antenna structure provides a wide band coverage from 3.02 to 9 GHz and narrow band coverage from 3.45 to 6.45 GHz, 5.04 to 7.65 GHz and 7.04 to 8.58 GHz corresponding to four switching configurations. The simulation software used is Ansoft High Frequency Structure Simulator (HFSS). The results from simulation and measurement are found to be matching. This design finds its applications in Worldwide Interoperability for Microwave Access, Wireless Local Area Network, Cognitive Radio, Satellites, etc.

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