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Sumathi, K.
- Simulation of Wireless Sensor Network with Hybrid Topology
Abstract Views :205 |
PDF Views:2
Authors
Affiliations
1 Department of Electronics and Communication Engineering, Dr. Mahalingam College of Engineering and Technology, IN
1 Department of Electronics and Communication Engineering, Dr. Mahalingam College of Engineering and Technology, IN
Source
ICTACT Journal on Communication Technology, Vol 7, No 1 (2016), Pagination: 1261-1268Abstract
The design of low rate Wireless Personal Area Network (WPAN) by IEEE 802.15.4 standard has been developed to support lower data rates and low power consuming application. Zigbee Wireless Sensor Network (WSN) works on the network and application layer in IEEE 802.15.4. Zigbee network can be configured in star, tree or mesh topology. The performance varies from topology to topology. The performance parameters such as network lifetime, energy consumption, throughput, delay in data delivery and sensor field coverage area varies depending on the network topology. In this paper, designing of hybrid topology by using two possible combinations such as star-tree and star-mesh is simulated to verify the communication reliability. This approach is to combine all the benefits of two network model. The parameters such as jitter, delay and throughput are measured for these scenarios. Further, MAC parameters impact such as beacon order (BO) and super frame order (SO) for low power consumption and high channel utilization, has been analysed for star, tree and mesh topology in beacon disable mode and beacon enable mode by varying CBR traffic loads.Keywords
Wireless Sensor Networks (WSNs), Medium Access Control (MAC) Layer, Beacon Order (BO), Super Frame Order (SO), Qualnet 5.0.2 Simulator.
- Compact Dual-band Inverted L Shaped Monopole Antenna for Wlan Applications
Abstract Views :199 |
PDF Views:2
Authors
Affiliations
1 Department of Electronics and Communication Engineering, Dr. Mahalingam College of Engineering and Technology, IN
1 Department of Electronics and Communication Engineering, Dr. Mahalingam College of Engineering and Technology, IN
Source
ICTACT Journal on Communication Technology, Vol 6, No 4 (2015), Pagination: 1182-1186Abstract
A highly compact and an optimized design of an Inverted L shaped printed monopole antenna with a simple compact ground plane is proposed. To make the designed antenna suitable for implantation it is embedded in FR-4 substrate and is presented. The antenna is designed for dual-band operation at 2.4GHz and 5.2GHz. It is suitable for Wireless Local Area Network (WLAN) applications with return loss (S11) < -10dB. The antenna has two different resonant current paths that support two resonances at 2.44GHz and 5.18GHz (forming an F-shaped structure). The size of the antenna is 32.5mm × 19.6mm × 1.6mm. The antenna design is simulated using the tool Advanced Design System (ADS) 2014. This antenna design has good return loss and radiation characteristics in both the required frequency bands. The radiation pattern obtained from the proposed antenna is an Omni directional radiation pattern in the E and H plane over the frequency ranges 2.4GHz and 5.2GHz.Keywords
Monopole Antenna, WLAN, ADS Software, FR4 Substrate.- Multiband Ring Shaped Fractal MIMO Antenna
Abstract Views :276 |
PDF Views:0
Authors
Affiliations
1 Department of Electronics and Communication Engineering, Sri Krishna College of Technology, IN
2 Department of Electronics and Communication Engineering, Dr. Mahalingam College of Engineering and Technology, IN
1 Department of Electronics and Communication Engineering, Sri Krishna College of Technology, IN
2 Department of Electronics and Communication Engineering, Dr. Mahalingam College of Engineering and Technology, IN
Source
ICTACT Journal on Communication Technology, Vol 10, No 2 (2019), Pagination: 1988-1993Abstract
A Ring shaped multiband fractal 2×2 MIMO antenna is proposed. The monopole antenna supports applications such as Bluetooth, GPS and PCS. The proposed antenna is fed with microstrip line feed. The antenna is designed with two different orientations 0° fractal ring antenna and 180° shifted fractal ring antenna. The antenna is simulated on 2D EM-simulator of ADS software. FR4 substrate is used and the overall size of the designed antenna is 70mm×45.3mm×1.6mm. The antenna is designed to operate for multiple frequencies with increase in gain, directivity, bandwidth and radiation efficiency. The 0 Fractal Ring configuration is better in terms of gain compared with 180 ring design.Keywords
Ring Antenna, MIMO, Fractal, Multiband.References
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