scholarly journals Dual-Band Annular Slot Antenna Loaded by Reactive Components for Dual-Sense Circular Polarization With Flexible Frequency Ratio

IEEE Access ◽  
2018 ◽  
Vol 6 ◽  
pp. 64063-64070 ◽  
Author(s):  
Jianxing Li ◽  
Junwei Shi ◽  
Lumei Li ◽  
Tayyab Ali Khan ◽  
Juan Chen ◽  
...  
Keyword(s):  
Circular Polarization ◽  
Frequency Ratio ◽  
Dual Band ◽  
Slot Antenna ◽  
Annular Slot

Polarization Reconfigurable Dual-Band Rectangular Slot Antenna

Frequenz ◽  
2019 ◽  
Vol 73 (9-10) ◽  
pp. 339-351
Author(s):  
Rohit Kumar Saini
Keyword(s):  
Circular Polarization ◽  
Linear Polarization ◽  
Dual Band ◽  
Slot Antenna ◽  
Pin Diodes ◽  
Rectangular Slot ◽  
Left Hand ◽  
Right Hand ◽  
Lower Band ◽  
The Senses

Abstract A novel dual-band rectangular slot antenna is presented for dual-sense reconfigurable polarization. A W-shaped microstrip feedline and two rectangular parasitic patches are used to obtain dual-band circular polarization. Further, the feedline is modified so that the senses of polarization at the two bands are opposite. By introducing PIN-diodes in the feed lines, polarization can be switched among left-hand circular polarization (LHCP), right-hand circular polarization (RHCP), and linear polarization (LP). A prototype dual-band dual-sense antenna with f01 = 1.9 GHz and f02 = 3.45 GHz is fabricated in a 1.6 mm thick FR4 substrate. The measured circular polarized bandwidths are more than 7.6 % for the lower band and 5 % for the upper band.

A CPW-fed uniplanar dual-band tri-polarization diversity antenna based on PIN diode for the wireless communication

2017 ◽  
Vol 9 (8) ◽  
pp. 1695-1703
Author(s):  
Haixiong Li ◽  
Yunlong Gong ◽  
Jiakai Zhang ◽  
Jun Ding ◽  
Chenjiang Guo
Keyword(s):  
Wireless Communication ◽  
Circular Polarization ◽  
Coplanar Waveguide ◽  
Axial Ratio ◽  
Dual Band ◽  
Slot Antenna ◽  
Reconfigurable Antenna ◽  
Pin Diode ◽  
Left Handed ◽  
The Right

In this paper, a coplanar waveguide (CPW)-fed dual-band uniplanar tri-polarization reconfigurable antenna based on the PIN diode switch is proposed. The proposed antenna can be reconfigured between the linear polarization (LP) and the circular polarization (CP) mode, including both the right-handed circular polarization and left-handed circular polarization simultaneously within the dual operating bands. The central frequencies of the bands are 2.63 and 4.42 GHz, respectively, and the overlapped operating bandwidth is 17.8 and 3.40%. The proposed reconfigurable antenna is a closed-slot antenna fed by the CPW transmission line and the reconfigurable mechanism is to regulate the T-shaped driven stub through switching the PIN diodes on and off. The scattering parameters, axial ratio, radiation pattern, gain, and the radiation efficiency of the proposed antenna are all investigated in the following. The optimized antenna has been fabricated to experimental test, the simulated and the measured results agree well with each other. The lower frequency band of the proposed antenna covers the 2.40 GHz WLAN specification and the upper band can be used for the 5 G communication (4.40–4.50 GHz); therefore it is suitable to be applied in the mobile wireless communication.

Novel dual-band asymmetric U-shaped slot antenna for dual-circular polarization

2016 ◽  
Vol 27 (1) ◽  
pp. e21047 ◽  
Author(s):  
Qiang Chen ◽  
Hou Zhang ◽  
Lu-chun Yang ◽  
Hai-peng Li ◽  
Tao Zhong ◽  
...  
Keyword(s):  
Circular Polarization ◽  
Dual Band ◽  
Slot Antenna

A Wideband Open-Slot Antenna With Dual-Band Circular Polarization

2015 ◽  
Vol 14 ◽  
pp. 1306-1309 ◽  
Author(s):  
Chien-Jen Wang ◽  
Meng-Hong Shih ◽  
Ling-Ting Chen
Keyword(s):  
Circular Polarization ◽  
Dual Band ◽  
Slot Antenna

A novel single-feed reconfigurable antenna for polarization and frequency diversity

2016 ◽  
Vol 9 (5) ◽  
pp. 1155-1161 ◽  
Author(s):  
Ailar Sedghara ◽  
Zahra Atlasbaf
Keyword(s):  
Circular Polarization ◽  
Simple Structure ◽  
Dual Band ◽  
Slot Antenna ◽  
Impedance Bandwidth ◽  
Frequency Diversity ◽  
Resonant Frequencies ◽  
Frequency Bands ◽  
Left Hand ◽  
Microstrip Feed

A novel dual-band single-feed reconfigurable annular-ring slot antenna with polarization diversity is proposed. This antenna has the ability to switch frequency bands and polarization at the same time whereas applying a simple structure. It consists of two concentric circular slots and two tuning stubs on one side of the substrate and a 50 Ω microstrip feed line and two stubs on the other side. The proposed antenna can be switched between two resonant frequencies, 2.4 GHz (WLAN) and 3.5 GHz (Wimax). Furthermore, it can be switched between linear polarization (LP), left-hand circular polarization (LHCP), and right-hand circular polarization (RHCP) at the first frequency band, LHCP and RHCP at the second band. All these capabilities are achieved by applying only five PIN diodes on both sides of the substrate. Simulation and experimental results indicate that the proposed antenna demonstrates a good impedance bandwidth at the two frequency bands and satisfactory radiation pattern in five different states.

scholarly journals A DUAL BAND SLOT ANTENNA FOR WIRELESS APPLICATIONS WITH CIRCULAR POLARIZATION

2017 ◽  
Vol 71 ◽  
pp. 69-77 ◽  
Author(s):  
Azadeh Pirooj ◽  
Mohammad Naser-Moghadasi ◽  
Ferdows B. Zarrabi ◽  
Alireza Sharifi
Keyword(s):  
Circular Polarization ◽  
Dual Band ◽  
Slot Antenna ◽  
Wireless Applications
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