Ultra‐wideband high‐gain dipole antenna evolved from hexagonal Sierpinski grid fractal gasket

2019 ◽  
Vol 13 (5) ◽  
pp. 574-583 ◽  
Author(s):  
Daotie Li ◽  
Zhonglin Wu ◽  
Jun‐Fa Mao
Keyword(s):  
High Gain ◽  
Dipole Antenna ◽  
Ultra Wideband

A Simple Ultra-Wideband Magneto-Electric Dipole Antenna With High Gain

Frequenz ◽  
2017 ◽  
Vol 72 (1-2) ◽  
Author(s):  
Chen-yang Shuai ◽  
Guang-ming Wang
Keyword(s):  
Electric Dipole ◽  
Simple Structure ◽  
High Gain ◽  
Dipole Antenna ◽  
Ultra Wideband ◽  
Main Beam ◽  
Impedance Bandwidth ◽  
Practical Applications ◽  
Measurement Results ◽  
Feeding Structure

AbstractA simple ultra-wideband magneto-electric dipole antenna utilizing a differential-fed structure is designed. The antenna mainly comprises three parts, including a novel circular horned reflector, two vertical semicircular shorted patches as a magnetic dipole, and a horizontal U-shaped semicircular electric dipole. A differential feeding structure working as a perfect balun excites the designed antenna. The results of simulation have a good match with the ones of measurement. Results indicate that the designed antenna achieves a wide frequency bandwidth of 107 % which is 3.19~10.61 GHz, when VSWR is below 2. Via introducing the circular horned reflector, the designed antenna attains a steady and high gain of 12±1.5dBi. Moreover, settled broadside direction main beam, high front-to-back ratio, low cross polarization, and the symmetrical and relatively stable radiation patterns in the E-and H-plane are gotten in the impedance bandwidth range. In the practical applications, the proposed antenna that is dc grounded and has a simple structure satisfies the requirement of many outdoor antennas.

scholarly journals A Band-Notched Antenna With Two Radiation Zeros Using Grounded Coplanar Waveguide Filter for 2.4/5 GHz WLAN Applications

2021 ◽  
Vol 9 ◽  
Author(s):  
Min Li ◽  
Feng Xu
Keyword(s):  
Coplanar Waveguide ◽  
High Gain ◽  
Split Ring Resonator ◽  
Dipole Antenna ◽  
Ultra Wideband ◽  
Measurement Results ◽  
Feeding Structure ◽  
5 Ghz ◽  
Microstrip Structure ◽  
Good Agreement

In this article, a band-notched dual-polarized crossed dipole antenna is proposed for 2.4/5 GHz WLAN applications. The proposed antenna works on the WLAN 2.4-GHz (2.4–2.48 GHz) and 5-GHz (5.15–5.85 GHz) bands for a VSWR <2 with two radiation zeros within 3.4–3.6 GHz. First, an ultra-wideband crossed dipole antenna with an operating frequency of 2.4–5.8 GHz is designed using the grounded coplanar waveguide (GCPW) feeding structure. Second, a miniaturized defected microstrip structure (DMS) is embedded in the GCPW feeding strip to form a stopband behavior with a radiation zero. Finally, combining with the design of a C-shaped split ring resonator (SRR) on the arms of the dipole antenna, a band notch (3.4–3.6 GHz) with two radiation zeros can be realized. These two radiation zeros can be adjusted independently to achieve a wide stopband performance. As a result, compared with the original ultra-wideband dipole antenna, the realized gains of the proposed antenna in the 3.4–3.6 GHz range are all suppressed from 8 dBi to less than −8 dBi. The proposed antenna can realize the stable unidirectional radiation pattern and a high gain of around 7 dBi in the lower band and 8.5 dBi in the higher band of WLAN. As a demonstration, the proposed antenna is fabricated and measured, and the measurement results are in good agreement with the simulation results.

High Gain Printed Ultra Wideband Antenna Concept

2007 ◽  
Author(s):  
Veselin Brankovic ◽  
Adalbert Jordan ◽  
Djordje Simic ◽  
Jens Weber ◽  
Jagjit Bal
Keyword(s):  
High Gain ◽  
Ultra Wideband ◽  
Wideband Antenna

A 0.1-10GHz Ultra-Wideband High-Gain Low-Noise Amplifier for UWB receiver

2021 ◽  
Author(s):  
Zerun Jin ◽  
Zhi-Jian Chen ◽  
Riyan Wang ◽  
Bin Li ◽  
Xiao-Ling Lin
Keyword(s):  
High Gain ◽  
Low Noise ◽  
Low Noise Amplifier ◽  
Ultra Wideband ◽  
Noise Amplifier ◽  
Uwb Receiver
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