Bandwidth enhancement in coplanar waveguide‐fed slot antennas designed for wideband code division multiple access/wireless local area network/worldwide interoperability for microwave access applications

2014 ◽  
Vol 8 (10) ◽  
pp. 724-729 ◽  
Author(s):  
Lin‐Chuan Tsai
Keyword(s):  
Code Division Multiple Access ◽  
Multiple Access ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Coplanar Waveguide ◽  
Local Area ◽  
Area Network ◽  
Slot Antennas ◽  
Bandwidth Enhancement ◽  
Code Division Multiple

Comparison of Single Mode Fiber and Multimode Fiber in Deployment of SCM-OCDMA in Local Area Network

2013 ◽  
Vol 594-595 ◽  
pp. 1037-1040
Author(s):  
Aliaa Mamoun Kabbour ◽  
Hilal A. Fadhil ◽  
Angela Amphawan ◽  
Syed A. Aljunid ◽  
Mohammad K.H. Al Mustafa
Keyword(s):  
Code Division Multiple Access ◽  
Multiple Access ◽  
Local Area Network ◽  
Single Mode ◽  
Local Area ◽  
Single Mode Fiber ◽  
Area Network ◽  
Multimode Fiber ◽  
Heterogeneous Technologies ◽  
Code Division Multiple

The integration of heterogeneous technologies promotes ubiquity and mobility. Optical code division multiple access (OCDMA) may be deployed in conjunction to SCM to improve the spectral efficiency and enhance the data rate of subscribers in a Local Area Network (LAN). This paper compares the performance of multimode fiber to single mode fiber in the deployment of a SCM-OCDMA system with multi-diagonal (MD) codes in a LAN.

Multiplecasting in a Wired LAN Using CDMA Technique

2008 ◽  
pp. 1416-1425
Author(s):  
K. S. Shaji Britto ◽  
P. E. Sankaranarayanan
Keyword(s):  
Code Division Multiple Access ◽  
Multiple Access ◽  
Local Area Network ◽  
Local Area ◽  
Area Network ◽  
Multiple Users ◽  
Code Division Multiple

In this paper, we discuss the details of a Code Division Multiple Access (CDMA)-based multiplecasting system in a wired Local Area Network (LAN). This technique enables multiple users to transmit and receive data simultaneously among themselves using a single serial wire link at any given time, hence, called multiplecasting. This is unlike the method followed with the Ethernet in a wired LAN. With security being the prime demand of today’s world, allowing multiple users to access the channel simultaneously may be critical; but in this respect, the CDMA technology proposed by us, since it uses unique code for each user, also provides a solution to the problem. In this paper we aimed at simulating this technique. The simulation was done using Mat lab. We studied the effectiveness of the scheme, and the results are discussed in this paper.

A Compact Antenna Design With High Gain for Wireless Energy Harvesting

2021 ◽  
pp. 244-253
Author(s):  
Priya Sharma ◽  
Ashutosh Kumar Singh
Keyword(s):  
Energy Harvesting ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Coplanar Waveguide ◽  
Local Area ◽  
High Gain ◽  
Center Frequency ◽  
Area Network ◽  
Rf Energy Harvesting ◽  
Rf Energy

A compact rectangular slotted antenna fed through coplanar waveguide for rectenna system is proposed in the application of radio frequency (RF) energy harvesting at center frequency of 2.45 GHz in the wireless local area network (WLAN) band. Three unequal widths of rectangular slots with equal distance have been created step by step to maximize the peak gain to 3.6 dB of the antenna. Radiation plot of the proposed antenna has been depicted to be omnidirectional for RF energy harvesting with maximum radiation efficiency characteristics. The dimension of the antenna is reduced up to 28 × 17 mm2 with better reflection coefficient of -34.6dB.

Design and analysis of a metamaterial inspired dual band antenna for WLAN application

2019 ◽  
Vol 11 (4) ◽  
pp. 351-358 ◽  
Author(s):  
Priyanka Garg ◽  
Priyanka Jain
Keyword(s):  
Reflection Coefficient ◽  
Wireless Local Area Network ◽  
Local Area Network ◽  
Coplanar Waveguide ◽  
Local Area ◽  
Dual Band ◽  
Band Spectrum ◽  
Area Network ◽  
Dual Band Antenna ◽  
Compact Size

AbstractIn this paper, a compact, low-profile, coplanar waveguide-fed metamaterial inspired dual-band microstrip antenna is presented for Wireless Local Area Network (WLAN) application. To achieve the goal a triangular split ring resonator is used along with an open-ended stub. The proposed antenna has a compact size of 20 × 24 mm2 fabricated on an FR-4 epoxy substrate with dielectric constant (εr) 4.4. The antenna provides two distinct bands I from 2.40 to 2.48 GHz and II from 4.7 to 6.04 GHz with reflection coefficient better than −10 dB, covering the entire WLAN (2.4/5.2/5.8 GHz) band spectrum. The performance of the proposed metamaterial inspired antenna is also studied in terms of the radiation pattern, efficiency, and the realized gain. A comparative study is also presented to show the performance of the proposed metamaterial inspired antenna with respect to other conventional antenna structures in terms of overall size, bandwidth, gain, and reflection coefficient. Finally, the antenna is fabricated and tested. The simulated results show good agreement with the measured results.

scholarly journals A CPW-Fed Rectangular Ring Monopole Antenna for WLAN Applications

2014 ◽  
Vol 2014 ◽  
pp. 1-6 ◽  
Author(s):  
Sangjin Jo ◽  
Hyunjin Choi ◽  
Beomsoo Shin ◽  
Sangyeol Oh ◽  
Jaehoon Lee
Keyword(s):  
Wireless Local Area Network ◽  
Local Area Network ◽  
Coplanar Waveguide ◽  
Ground Plane ◽  
Local Area ◽  
Monopole Antenna ◽  
Dual Band ◽  
Area Network ◽  
Feed Line ◽  
Compact Size

We present a simple coplanar waveguide- (CPW-) fed rectangular ring monopole antenna designed for dual-band wireless local area network (WLAN) applications. The antenna is based on a simple structure composed of a CPW feed line and a rectangular ring. Dual-band WLAN operation can be achieved by controlling the distance between the rectangular ring and the ground plane of the CPW feed line, as well as the horizontal vertical lengths of the rectangular ring. Simulated and measured data show that the antenna has a compact size of21.4×59.4 mm2, an impedance bandwidths of 2.21–2.70 GHz and 5.04–6.03 GHz, and a reflection coefficient of less than −10 dB. The antenna also exhibits an almost omnidirectional radiation pattern. This simple compact antenna with favorable frequency characteristics therefore is attractive for applications in dual-band WLAN.

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