Stable‐multiband frequency reconfigurable antenna with improved radiation efficiency and increased number of multiband operations

2019 ◽  
Vol 13 (5) ◽  
pp. 642-648 ◽  
Author(s):  
Jayendra Kumar ◽  
Banani Basu ◽  
Fazal Ahmed Talukdar ◽  
Arnab Nandi
Keyword(s):  
Radiation Efficiency ◽  
Reconfigurable Antenna ◽  
Frequency Reconfigurable Antenna

scholarly journals Compact Antenna with Frequency Reconfigurability for GPS/LTE/WWAN Mobile Handset Applications

2016 ◽  
Vol 2016 ◽  
pp. 1-8
Author(s):  
Lingsheng Yang ◽  
Biyu Cheng ◽  
Yongan Zhu ◽  
Yajie Li
Keyword(s):  
Radiation Efficiency ◽  
Impedance Bandwidth ◽  
Reconfigurable Antenna ◽  
Antenna Gain ◽  
Radiation Patterns ◽  
Rf Switch ◽  
Compact Antenna ◽  
Resonant Modes ◽  
Mobile Handset ◽  
Frequency Reconfigurable Antenna

A compact frequency reconfigurable antenna for mobile handset application is proposed in this paper. The antenna consists of an inverted L-shaped feeding strip, a shorter grounded strip, and a longer grounded strip which is connected with four inductors by using a single-pole four-throw RF switch. When we change the working states of the RF switch, the corresponding inductor is connected with the long grounded strip and different resonant modes of the antenna can be realized. The measured −6 dB impedance bandwidth of the presented antenna is 683–960 MHz and 1460–2820 MHz, which is able to cover the LTE700/GSM850/900 and GPS/DCS1800/PCS1900/UMTS2100/LTE2300/2500 bands. The antenna gain, radiation efficiency, and radiation patterns are also described in the paper.

scholarly journals An Autonomous Frequency Reconfigurable Antenna Using Slotline Open-Loop Resonators

IEEE Access ◽  
2021 ◽  
pp. 1-1
Author(s):  
Geriki Polaiah ◽  
Krishnamoorthy Kandasamy ◽  
Muralidhar Kulkarni
Keyword(s):  
Open Loop ◽  
Reconfigurable Antenna ◽  
Frequency Reconfigurable Antenna

scholarly journals Frequency Reconfigurable Antenna Based on Substrate Integrated Waveguide for S-Band and C-Band Applications

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 2839-2845
Author(s):  
Jiamei Qin ◽  
Xuedong Fu ◽  
Mingyu Sun ◽  
Qiang Ren ◽  
Aixin Chen
Keyword(s):  
Reconfigurable Antenna ◽  
Substrate Integrated Waveguide ◽  
Frequency Reconfigurable Antenna

A Frequency Reconfigurable Antenna based on Few Layer Graphene

2021 ◽  
Vol 36 (5) ◽  
pp. 542-547
Author(s):  
Sheng-lan Wang ◽  
Jing-Song Hong ◽  
Yan Deng ◽  
Zhi-jian Chen
Keyword(s):  
Experimental Evidence ◽  
Bias Voltage ◽  
Direct Current ◽  
Surface Impedance ◽  
Microstrip Line ◽  
Reconfigurable Antenna ◽  
Layer Graphene ◽  
Direct Current Bias ◽  
Few Layer Graphene ◽  
Frequency Reconfigurable Antenna

In this paper, a frequency reconfigurable antenna was presented. This antenna is made up of a square loop and a microstrip line with a gap, in which the few layer graphene (FLG) sheet is located to achieve frequency reconfigurable. FLG is likes a lumped resistor with resistance. And the surface impedance can be adjusted by applying a direct current bias voltage, which obtains two work modes that imitate switch. Additionally, the experimental evidence show the proposed frequency reconfigurable antenna can provide a tunable bandwidth.

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