A 0.9 V high gain and high linear bleeding CMOS mixer for wireless applications

Author(s):  
Sid Ahmed Tedjini ◽  
Abdelhalim Slimane ◽  
Mohand Tahar Belaroussi ◽  
Mohamed Trabelsi
2019 ◽  
Vol 8 (4) ◽  
pp. 3257-3263

Antennas play a vital role in wireless communication; a thirst of excellence in this area is unending. Proposed work describes a concept of fractal multiband antenna designed in the hexagon shape. Basically fractal is the concept used in Microstrip antenna for giving better results than conventional Microstrip antenna. By using hexagonal fractal antenna we can possibly achieve the radiation pattern with high gain. The coaxial feeding is used and multiple hexagons are interconnected in array for maintaining conductivity and to preserve electrical self similarity. Hexagonal antenna is used for different wireless applications. The proposed antenna frequency band covers a large number of wireless communication applications including GPS (1.6GHz), Bluetooth (2.4 GHz) & WLAN (3.6GHz). Antenna design has been designed and simulated by using the software Ansoft’s HFSS and parameters like bandwidth return loss, directivity, VSWR are analyzed. Fabrication of the antenna is done by using wet-etching method, on FR-4 dielectric substrate material. Experimental results are taken on Vector Network Analyzer (VNA) and those obtained results were compared with simulated results. The hexagonal fractal antenna array is found to possess predictable multiband characteristics.


2016 ◽  
Vol 64 (7) ◽  
pp. 2848-2861 ◽  
Author(s):  
Renato Cicchetti ◽  
Antonio Faraone ◽  
Emanuela Miozzi ◽  
Rodolfo Ravanelli ◽  
Orlandino Testa

Author(s):  
Cheng-Chih Chang ◽  
Ro-Min Weng ◽  
J.C. Huang ◽  
Kang Hsu ◽  
Kun-Yi Lin
Keyword(s):  

Wireless body area networks have paying more attention in the recent decade. The microstrip textile antenna used for wireless applications (ISM Band) such as emergency rescue, health monitoring and medical care. In this paper, the square patch microstrip textile antenna is introduced which is mounted on the flexible jeans substrate. The physical size of the suggested/simulated textile antenna is 52.99 X 45.23 mm2 & the jean’s material is used as substrate with its relative permittivity of ɛr = 1.67. The proposed antenna is radiating at the center frequency of 2.45 GHz with a return loss of -15.76 dB & VSWR 1.389, the far field directivity of an antenna is 8.05 dBi at 2.45GHz. The designed antenna is wearable on the clothes because the use of textile material for antenna fabrication by keeping SAR at 1.6 W/Kg.


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