scholarly journals A Multifunctional Compact Pattern Reconfigurable Antenna with Four Radiation Patterns for Sub-GHz IoT Applications

2021 ◽  
pp. 1-1
Author(s):  
Saeed A. Haydhah ◽  
Fabien Ferrero ◽  
Leonardo Lizzi ◽  
Mohammad S. Sharawi ◽  
Azzedine Zerguine
Keyword(s):  
Reconfigurable Antenna ◽  
Radiation Patterns ◽  
Iot Applications

scholarly journals Wideband Quad-Polarization Reconfigurable Antenna Using Switchable Feed Network With Stable Unidirectional Radiation Patterns

IEEE Access ◽  
2018 ◽  
Vol 6 ◽  
pp. 73434-73443 ◽  
Author(s):  
Xiaoxiang Ding ◽  
Zhiqin Zhao ◽  
Yaohui Yang ◽  
Zaiping Nie ◽  
Qing Huo Liu
Keyword(s):  
Reconfigurable Antenna ◽  
Radiation Patterns ◽  
Feed Network

scholarly journals Radiation Pattern Reconfigurable Antenna for IoT Devices

2021 ◽  
Vol 2021 ◽  
pp. 1-13
Author(s):  
Zakaria Mahlaoui ◽  
Eva Antonino-Daviu ◽  
Miguel Ferrando-Bataller
Keyword(s):  
Radiation Pattern ◽  
Reconfigurable Antenna ◽  
Characteristic Mode ◽  
Pin Diodes ◽  
Iot Applications ◽  
Different Dimensions ◽  
Iot Devices ◽  
Characteristic Mode Theory ◽  
Good Agreement ◽  
Metallic Plates

Based on the characteristic mode theory, a versatile radiation pattern reconfigurable antenna is proposed. The analysis starts from two parallel metallic plates with the same and different dimensions. By means of two PIN diodes, the size of one of the parallel metallic plates can be modified and consequently the behavior of the radiation pattern can be switched between bidirectional and unidirectional radiation patterns. Moreover, a SPDT switch is used to adjust the frequency and match the input impedance. The reconfigurable antenna prototype has been assembled and tested, and a good agreement between simulated and measured results is obtained at 2.5 GHz band which fits the IoT applications.

A planar reconfigurable antenna with bidirectional end-fire and broadside radiation patterns

2014 ◽  
Vol 56 (8) ◽  
pp. 1942-1946 ◽  
Author(s):  
Longsheng Liu ◽  
Wendong Liu ◽  
Yue Li ◽  
Zhijun Zhang ◽  
Zhenghe Feng
Keyword(s):  
Reconfigurable Antenna ◽  
Radiation Patterns ◽  
Broadside Radiation

scholarly journals A Horizontal Azimuth Pattern-Reconfigurable Antenna Using Omnidirectional Microstrip Arrays for WLAN Application

2019 ◽  
Vol 2019 ◽  
pp. 1-9 ◽  
Author(s):  
Liang Yang ◽  
Cheng Lu ◽  
Xiao Li ◽  
Leilei Liu ◽  
Xiaoxing Yin
Keyword(s):  
Central Series ◽  
Reconfigurable Antenna ◽  
Radiation Patterns ◽  
Control Board ◽  
Parasitic Element ◽  
Maximum Gain ◽  
Conducting Plate ◽  
Four Corners ◽  
Microstrip Array ◽  
Supporting Plate

A horizontal azimuth pattern-reconfigurable antenna with configurable parasitic element arrays for WLAN applications is proposed in this paper. It consists of a control board, a central series-fed omnidirectional microstrip array, four configurable parasitic elements, a bottom conducting plate, and a top supporting plate. The omnidirectional microstrip array is adopted as an exciter, around which the four same parasitic element arrays are arranged at four corners. The p-i-n diodes as switches are placed between the parasitic element arrays and the conducting plate to control the fifteen radiation patterns of the proposed antenna. The parasitic element arrays are configured as reflectors or directors by switching the p-i-n diodes on or off. The bandwidth achieved ranges from 5.00 GHz to 5.27 GHz. A gain of 8.52 dBi is obtained when the antenna reaches the maximum gain in the H-plane at 5.2 GHz. Good agreements between the simulated and measured results were observed. The proposed parasitic structure which has the same structure with the driven element can enhance the horizontal azimuth gain of the antenna. Only 4 p-i-n diodes are used to produce up to 15 useful beam configurations with a gain range of 4.56-8.52 dBi at the horizontal azimuth.

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 Non-Volatile RF Reconfigurable Antenna on Flexible Substrate for Wireless IoT Applications

IEEE Access ◽  
2021 ◽  
Vol 9 ◽  
pp. 119395-119401
Author(s):  
Ting Leng ◽  
Kewen Pan ◽  
Xinyao Zhou ◽  
Yize Li ◽  
Mahmoud A. Abdalla ◽  
...  
Keyword(s):  
Flexible Substrate ◽  
Reconfigurable Antenna ◽  
Iot Applications
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