scholarly journals Design of a compact reconfigurable antenna with triple band switchable characteristics

2017 ◽  
Vol 7 (1.1) ◽  
pp. 554
Author(s):  
P Pardhasaradhi ◽  
B T.P. Madhav ◽  
D Rajendra Kamal ◽  
M Chinna Somaiah ◽  
Ch Gayathri ◽  
...  
Keyword(s):  
Mobile Communication ◽  
Impedance Matching ◽  
Dual Band ◽  
Impedance Bandwidth ◽  
Portable Devices ◽  
Reconfigurable Antenna ◽  
Pin Diodes ◽  
Antenna Structure ◽  
Frequency Reconfigurable Antenna ◽  
Triple Band

Antennas with reconfigurable functionality is the mostly preferred one in the antennas field. In such scenario, a work is presented in this article proposing a frequency reconfigurable antenna with a compact PIFA kind of structure. The antenna structure has the folded radiating structure and embedded with some lumped resistance and distributed capacitance, inductance for providing the impedance matching across desired bands for wireless communication. Further, the switching elements (PIN diodes-BAR64-02V) are inserted in the gap between the long-meandered line structure for attaining the switchable characteristics among single band (0.68-0.98 GHz), dual band (0.70 – 0.96 GHz, 2.26 - 2.65 GHz), and triple band (0.69 - 0.99 GHz, 1.89 - 2.78 GHz, 3.64 – 4.1 GHz) respectively. The impedance bandwidth is considered according to S11 < -6 dB criteria for the mobile communication applications. The proposed antenna is suitable for smartphone, laptop and portable devices with GSM/PCS/WCDMA/UMTS/LTE communication applications.

A Novel Design of Frequency Reconfigurable Antenna for UWB Application

Frequenz ◽  
2016 ◽  
Vol 70 (9-10) ◽  
Author(s):  
Xiaolin Yang ◽  
Ziliang Yu ◽  
Zheng Wu ◽  
Huajiao Shen
Keyword(s):  
Frequency Band ◽  
Dual Band ◽  
Reconfigurable Antenna ◽  
Pin Diodes ◽  
Notched Band ◽  
Uwb Applications ◽  
Novel Design ◽  
Frequency Reconfigurable Antenna

AbstractIn this paper, we present a novel frequency reconfigurable antenna which could be easily operate in a single notched-band (WiMAX (3.3–3.6 GHz)) UWB frequency band, another single notched-band (WLAN (5–6 GHz)) UWB frequency band and the dual band-notched UWB frequency band (the stopband covers the WiMAX (3.3–3.6 GHz) and WLAN (5–6 GHz)). The reconfigurability is achieved by changing the states of PIN diodes. The simulated results are in agreement well with the measured results. And the measured patterns are slightly changed with antenna reconfiguration. The proposed antenna is a good candidate for various UWB applications.

scholarly journals Inset fed Triple Band U-Slot Antenna for GSM900/GSM1900/WLAN Applications

2019 ◽  
Vol 8 (6S3) ◽  
pp. 1513-1517
Keyword(s):  
Mobile Communication ◽  
Dual Band ◽  
Slot Antenna ◽  
Impedance Bandwidth ◽  
Global System ◽  
Frequency Bands ◽  
Triple Band

To cover Global System for Mobile Communication(GSM) and WLAN frequency bands, three distinctive Inset fed antennas like rectangular microstrip, dualband dual slot and antennas are designed. Inset fed micostrip antenna is used for GSM1900 with an impedance bandwidth from 1.90GHz to 1.96GHz. Inset fed dual band dual slot antenna is used for GSM1900 and WLAN with impedance bandwidth is considered first band from 1.90GHz to 1.95GHz and second band from 2.38GHz to 2.42GHz. The proposed Inset fed triple band antenna is used for GSM900, GSM1900 and WLAN with appropriate position of slot, is to operate in frequency ranges of first band is from 920MHz to 940MHz, second band is from 1.91GHz to 1.94GHz and third band is from 2.39GHz to 2.43GHz. A correlation among various feed widths, feed lengths and slot widths are exhibited in this paper.

scholarly journals Design and Realization of a Frequency Reconfigurable Multimode Antenna for ISM, 5G-Sub-6-GHz, and S-Band Applications

2021 ◽  
Vol 11 (4) ◽  
pp. 1635
Author(s):  
Adnan Ghaffar ◽  
Xue Jun Li ◽  
Wahaj Abbas Awan ◽  
Syeda Iffat Naqvi ◽  
Niamat Hussain ◽  
...  
Keyword(s):  
Superior Performance ◽  
Dual Band ◽  
Reconfigurable Antenna ◽  
Performance Parameters ◽  
Pin Diodes ◽  
Compact Size ◽  
Simulation Results ◽  
Strong Candidate ◽  
Frequency Reconfigurable Antenna ◽  
Strong Agreement

This paper presents the design and realization of a compact size multimode frequency reconfigurable antenna. The antenna consists of a triangular-shaped monopole radiator, originally inspired from a rectangular monopole antenna. Slots were utilized to notch the desired frequency while the PIN diodes were utilized to achieve frequency reconfigurability. The antenna can operate in wideband, dual-band, or tri-band mode depending upon the state of the diodes. To validate the simulation results, a prototype was fabricated, and various performance parameters were measured and compared with simulated results. The strong agreement between simulated and measured results along with superior performance as compared to existing works in the literature makes the proposed antenna a strong candidate for ISM, 5G-sub-6 GHz, and S-band applications.

Compact dual and triple band antennas for 5G-IOT applications

2021 ◽  
pp. 1-8
Author(s):  
Ruchi ◽  
Amalendu Patnaik ◽  
M. V. Kartikeyan
Keyword(s):  
Microwave Frequency ◽  
Mobile Internet ◽  
Dual Band ◽  
Impedance Bandwidth ◽  
Printed Antenna ◽  
Iot Applications ◽  
Multiband Antennas ◽  
New Radio ◽  
Compact Size ◽  
Triple Band

Abstract Designing miniaturized multiband antennas to cover both the 5G new radio frequencies (FR1 and FR2) simultaneously is a challenge for wireless communication researchers. This paper presents two antenna designs : a dual-band printed antenna of size 18 × 16 × 0.285 mm3 operating at FR1–5.8 GHz and FR2–28 GHz and a triple-band printed antenna with dimensions 30 × 25 × 0.543 mm3 operating at FR1–3.5 GHz and 5.8 GHz (sub-6 GHz microwave frequency bands) and FR2–28 GHz (mm-wave frequency band). The final projected triple-band antenna has a compact size with an impedance bandwidth of 12.71%, 11.32%, and 18.3% at 3.5 GHz, 5.8 GHz, and 28 GHz, respectively with the corresponding gain of 1.86 dB, 2.55 dB, and 4.41 dB. The measured radiation characteristics of the fabricated prototypes show that the proposed designs are suitable for trendy 5G-RFID and mobile Internet of things (IoT) applications.

scholarly journals Frequency reconfigurable monopole antenna with DGS for ISM band applications

2018 ◽  
Vol 69 (4) ◽  
pp. 293-299 ◽  
Author(s):  
Boddapati T. P. Madhav ◽  
Shaik Rajiya ◽  
Badugu P. Nadh ◽  
Munuswami S. Kumar
Keyword(s):  
Dielectric Constant ◽  
Wireless Communication ◽  
Transmission Line ◽  
Ground Plane ◽  
Reconfigurable Antenna ◽  
Pin Diodes ◽  
Microstrip Transmission Line ◽  
Ism Band ◽  
Frequency Reconfigurable Antenna ◽  
Antenna Model

Abstract In this article a compact frequency reconfigurable antenna is presented for wireless communication applications of industrial, scientific and medical band (ISM). The proposed antenna model is designed with the dimensions of 58mm×48 mm on FR4 epoxy of dielectric constant 4.4 with the thickness of 0.8 mm. The proposed antenna consists of defected T-shape ground plane, which acts as a reflector. In the design of frequency reconfigurable antenna, BAR 64-02V PIN diodes are used as switching elements and antenna is fed by microstrip transmission line. The proposed antenna can switch at different frequencies (2.5 GHz, 2.3 GHz and 2.2 GHz) depending on the biasing voltage applied to the PIN diodes. The current antenna showing VSWR < 2 in the operating band and providing peak realized gain of 3.2 dBi. A good matching obtained between expected and the measured results.

U-Patch Antenna for RFID and Wireless Applications

2011 ◽  
Vol 324 ◽  
pp. 434-436
Author(s):  
R. Abi Saad ◽  
Zeina Melhem ◽  
Chadi Nader ◽  
Youssef Zaatar ◽  
Doumit Zaouk
Keyword(s):  
Radio Frequency Identification ◽  
Patch Antenna ◽  
Impedance Matching ◽  
Dual Band ◽  
Antenna Structure ◽  
Wireless Applications ◽  
Microstrip Patch ◽  
Additional Layer ◽  
Quarter Wavelength ◽  
Frequency Identification

in this paper, we propose a new multi-band patch antenna structure for embedded RFID (Radio Frequency Identification) readers and wireless communications. The proposed antenna is a dual band microstrip patch antenna using U-slot geometry. The operating frequencies of the proposed antenna are chosen as 2.4 and 0.9 (GHz), obtained by optimizing the physical dimensions of the U-slot. Several parameters have been investigated using Ansoft Designer software. The antenna is fed through a quarter wavelength transformer for impedance matching. An additional layer of alumina is added above the surface of the conductors to increase the performance of the antenna.

scholarly journals A frequency reconfigurable antenna with Bluetooth, Wi-Fi and WLAN notch band characteristics

2018 ◽  
Vol 7 (2.7) ◽  
pp. 127 ◽  
Author(s):  
A Vamseekrishna ◽  
B T P Madhav
Keyword(s):  
Dielectric Constant ◽  
Loss Tangent ◽  
Coplanar Waveguide ◽  
Ground Plane ◽  
Substrate Material ◽  
Reconfigurable Antenna ◽  
Pin Diodes ◽  
Notch Band ◽  
Frequency Reconfigurable Antenna

A compact coplanar waveguide fed reconfigurable antenna with three notch bands are presented in this paper. Proposed antenna reconfigurability is acquired by placing bar6404 PIN diodes in the S-shaped ground plane in right to left mode and left to right mode. By switching the diode, reconfigurability achieved for three different operations. The substrate material for the proposed antenna is FR4 with dielectric constant 4.4 and loss tangent 0.02. The overall dimension of the reconfigurable antenna is around 30×26mm2. It is being observed in this work for the cause of each individual slot on notch band characteristics. The measured gain for the designed reconfigurable antenna is quite stable at operating frequencies except notch bands. The proposed antenna is suitable for practical wideband applications with notching.

Rotatable Dual Band-Notched UWB/Triple-Band WLAN Reconfigurable Antenna

2013 ◽  
Vol 12 ◽  
pp. 104-107 ◽  
Author(s):  
Parisa Lotfi ◽  
Mohammadnaghi Azarmanesh ◽  
Saber Soltani
Keyword(s):  
Dual Band ◽  
Reconfigurable Antenna ◽  
Triple Band

A compact polarization reconfigurable stacked microstrip antenna for WiMAX application

2020 ◽  
pp. 1-16
Author(s):  
Murari Shaw ◽  
Niranjan Mandal ◽  
Malay Gangopadhyay
Keyword(s):  
Microstrip Antenna ◽  
Impedance Matching ◽  
Axial Ratio ◽  
Dual Band ◽  
Impedance Bandwidth ◽  
Circularly Polarized ◽  
Rectangular Slot ◽  
Substrate Layer ◽  
Linearly Polarized ◽  
Coaxial Probe

Abstract In this paper, a stacked microstrip patch antenna with polarization reconfigurable property has been proposed for worldwide interoperability for microwave access (WiMAX) application. The proposed antenna has two substrate layers: upper and lower layers with two radiating patches connected with the coaxial probe. Without the upper layer the lower square-shaped substrate layer having regular hexagonal radiating patch with probe fed acts as a linear polarized antenna with impedance bandwidth for (S11 ≤ −10 dB) is 370 MHz 10.56% (3.32–3.69 GHz) cover WiMAX (3.4–3.69 GHz) application band. The hexagonal radiating patch is perturbed with an optimum rectangular slot to enhance the impedance bandwidth of the antenna. The lower substrate layer having hexagonal patch with the same probe position is stacked with the upper square-shaped substrate layer with same sized square patch and the upper patch soldered with the coaxial probe. The overall stacked antenna generates a circularly polarized band when the opposite corner of the top square radiating patch of the upper layer is truncated with optimum size. In order to generate another circularly polarized band and to improve the input impedance matching of the stacked antenna, the top radiating patch is perturbed with two slots and a slit. The stacked circularly polarized antenna generates impedance bandwidth of 12.75% (3.23–3.67 GHz) for (S11 ≤ −10 dB) with two circularly polarized bands (3.34–3.37 GHz) and (3.66–3.70 GHz) as per (axial ratio ≤ 3 dB) for WiMAX application. Therefore, the proposed antenna can be used as linearly polarized or dual band circularly polarized according to requirement.

scholarly journals Dual-Band Reconfigurable Antenna for Polarization Diversity

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Youngje Sung
Keyword(s):  
Ring Resonator ◽  
Dual Band ◽  
Reconfigurable Antenna ◽  
Pin Diode ◽  
Polarization Diversity ◽  
Pin Diodes ◽  
Resonant Frequencies ◽  
Polarized Waves ◽  
Ring Antenna ◽  
Left And Right

This paper proposes a dual-band reconfigurable square-ring antenna with a polarization diversity property. The proposed antenna consists of a square-ring resonator, two stubs with a shorting via, and two PIN diodes. The stub is positioned symmetrically to the left and right of the square-ring resonator, and the square-ring antenna connected to one of two stubs has a dual-band resonance. In this case, both resonant frequencies exhibit linear polarization (LP), and the two polarized waves are perpendicular to each other. The PIN diode selectively connects only one of the two stubs to the square-ring resonator. Thus, the polarization of the proposed antenna changes electrically at the two resonant frequencies. In addition, the frequency ratio (f2/f1) can be easily controlled by changing the length or width of the stub.

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