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 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 DESIGN AND ANALYSIS OF T-STUB U-SLOT NOTCH BAND FREQUENCY RECONFIGURABLE ANTENNA USING PARAMETRIC ANALYSIS FOR WIRELESS COMMUNICATION APPLICATIONS

2020 ◽  
Vol 7 (7) ◽  
pp. 15-20
Author(s):  
B.Siva Prasad ◽  
P. Mallikarjuna Rao
Keyword(s):  
Parametric Analysis ◽  
Coplanar Waveguide ◽  
Antenna Design ◽  
Reconfigurable Antenna ◽  
Pin Diodes ◽  
Band Frequency ◽  
Notch Band ◽  
Feed Network ◽  
Simulation Results ◽  
Efficient Power

The design and analysis of a T-Stub U-Slot Frequency Reconfigurable Notch band antenna is considered in the present work using Coplanar Waveguide feed network for an efficient power transfer to improve the bandwidth characteristics of the antenna. The designed antenna has a dimension of 24X21X1.6 mm with FR4 substrate having a permittivity of 4.4. The proposed antenna consists of a T-Stub and U-Slots which are used to enhance the performance characteristics of the antenna. The reconfigurability is achieved by placing PIN diodes at T-Stub and U-Slots of the antenna design. The designed antenna is more suitable for WLAN, Wi-Fi, LTE and Bluetooth applications. Simulation results are obtained using CST tool and the same are presented at the end.

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.

Aperture-coupled ESPAR antenna with unique feed network for symmetric switched beam radiation patterns

2016 ◽  
Vol 9 (3) ◽  
pp. 675-683
Author(s):  
Hassan Umair ◽  
Niaz Muhammad ◽  
Tayyab Hassan ◽  
Imran Rashid ◽  
Farooq A. Bhatti
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Surface Current ◽  
Main Lobe ◽  
Main Beam ◽  
Radiation Patterns ◽  
Beam Radiation ◽  
Pin Diodes ◽  
Feed Network ◽  
Planar Aperture

Aperture-coupled ESPAR antenna with a unique feed structure for switched beam application has been presented. The feed structure provides control over surface current of the driven element with the help of which main lobe can be steered in desired direction. This control has been achieved through the use of PIN-diodes. Finite element method has been utilized for design and simulated and measured results have been presented for validation. The antenna has the ability to steer the main beam in six directions. All radiation patterns are symmetric. The planar aperture-coupled nature of proposed antenna is ideal for integration and commercialization.

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