Dual band WLAN four antenna system for access point uses

2014 ◽  
Author(s):  
Bo-Ren Hsiao ◽  
Chen-Yu Hsieh ◽  
Jiun-Ting Yeh ◽  
Wen-Jiao Liao
Keyword(s):  
Access Point ◽  
Antenna System ◽  
Dual Band

A compact omnidirectional to directional frequency reconfigurable antenna for wireless sensor network applications

2021 ◽  
pp. 1-12
Author(s):  
Melvin Chamakalayil Jose ◽  
Radha Sankararajan ◽  
Balakrishnapillai Suseela Sreeja ◽  
Mohammed Gulam Nabi Alsath ◽  
Pratap Kumar
Keyword(s):  
Wireless Sensor Network ◽  
Sensor Network ◽  
Radiation Pattern ◽  
Antenna System ◽  
Wireless Sensor ◽  
Dual Band ◽  
Design Parameters ◽  
Pin Diodes ◽  
Band Frequency ◽  
Directional Radiation

Abstract In the proposed research paper, a novel compact, ultra-wideband electronically switchable dual-band omnidirectional to directional radiation pattern microstrip planar printed rectangular monopole antenna (PRMA) has been presented. The proposed antenna system has an optimum size of 0.26 λ0 × 0.28 λ0. A combination of radiators, reflectors, and two symmetrical grounds does place on the same layer of the rectangular microstrip PRMA. The frequency agility and the radiation pattern from omnidirectional to directional are achieved using two SMD PIN diodes (SMP1340-04LF). The directional radiation patterns with 180° phase shifts are achieved at the C-band frequency spectrum. The parametric study of the proposed antenna system was performed for different design parameters, and the antenna characteristics were analyzed. An antenna prototype is fabricated using the printed circuit board etching method by using RMI UV laser etching and cutting tools. The measurements of the proposed antenna are conducted in an anechoic chamber to validate the simulations. There are three states of operations due to two SMD PIN diodes being used in switching circuits. In state-I, the proposed antenna radiates at 6.185 GHz (5.275–6.6 75 GHz) in the Ф = 270° direction with a gain of 2.1 dBi, whereas in state-II, it radiates at 5.715 GHz (5.05–6.8 GHz) in the Ф = 90° direction with a gain of 2.1 dBi. In state-III, the antenna exhibits the X-band frequency with center frequency at 9.93 GHz (8.845–10.49 GHz), and the omnidirectional pattern offers a gain of 4.1 dBi. The features of the proposed antenna are suitable for high-speed wireless sensor network communication in industries such as chemical reactors in oil and gas and pharmaceuticals. It is also well suited for IoT and 5G-sub-6-GHz applications.

A Novel Compact Dual-Band LTE Antenna-System for MIMO Operation

2014 ◽  
Vol 62 (4) ◽  
pp. 2291-2296 ◽  
Author(s):  
Ibra Dioum ◽  
Aliou Diallo ◽  
Sidi Mohamed Farssi ◽  
Cyril Luxey
Keyword(s):  
Antenna System ◽  
Dual Band

A dual-band microstrip annular slot-based mimo antenna system

2014 ◽  
Vol 57 (2) ◽  
pp. 360-364 ◽  
Author(s):  
Muhammad Umar Khan ◽  
Mohammad S. Sharawi
Keyword(s):  
Antenna System ◽  
Dual Band ◽  
Mimo Antenna ◽  
Annular Slot

scholarly journals DESIGN OF A DUAL-BAND ANTENNA SYSTEM FOR LTE-M AND LTE-MIMO BY EXPLOITING THE CHARACTERISTIC MODE THEORY

2020 ◽  
Vol 93 ◽  
pp. 11-21
Author(s):  
Kadidiatou Diallo ◽  
Aliou Diallo ◽  
Ibra Dioum ◽  
Samuel Ouya ◽  
Jean Marc Ribero
Keyword(s):  
Antenna System ◽  
Dual Band ◽  
Characteristic Mode ◽  
Mode Theory ◽  
Dual Band Antenna ◽  
Characteristic Mode Theory
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