Design and performance analysis of a modified circular planar monopole UWB antenna

Anveshkumar, N.; Gandhi, A. S.

doi:10.1109/icccnt.2017.8203970

Cited by 15 publications

(5 citation statements)

References 11 publications

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“…where R is the distance between the transmitting and receiving antennas, P SG is the power of the standard gain antenna, G SG is the gain of the standard gain antenna, P AUT is the power of the antenna under test, G AUT is the gain of the antenna under test, P t is the power of transmitting antenna, G t is the gain of transmitting antenna, and λ is the operating wavelength. Dividing Equation (11) by Equation ( 12),…”

Section: Resultsmentioning

confidence: 99%

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Design and Performance Evaluation of a Second-Order Iterated Circular Minkowski Fractal Antenna for Ultra-Wideband Applications

Joseph,

Kumar,

Afullo

2023

Fractal Fract

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In this article, a second-order iterated Circular Minkowski fractal antenna (CMFA) tailored for ultra-wideband (UWB) applications is designed and developed. Leveraging the power of Minkowski fractal geometry, this antenna design achieves a high gain across the UWB frequency spectrum. The design utilizes a circular groove on the ground plane and an arc slot on the radiating element for improving the antenna performance. The proposed antenna is fabricated using cost-effective material, an FR-4 substrate. The antenna is simulated and optimized. The fabricated optimized antenna undergoes real-world testing. Measured results reveal an impressive 120.6% impedance bandwidth spanning from 3.37 GHz to 13.6 GHz, with resonant frequencies at 4.43 GHz, 6.07 GHz, and 9.3 GHz. Meanwhile, the simulated results indicate an impedance bandwidth of 118% ranging from 3.17 GHz to 12.44 GHz. Real-world measurements validate the anticipated UWB traits, closely aligning with the simulation data, and confirming efficient impedance matching with a VSWR of less than 2 across the 3.37 GHz to 13.6 GHz frequency range. The radiation pattern analysis demonstrates a robust bidirectional E-plane pattern and a nearly omnidirectional H-plane pattern. This research introduces a highly promising circular Minkowski fractal antenna for UWB applications, offering exceptional bandwidth and resonance characteristics. This antenna design holds excellent potential for multi-functional wireless systems and opens avenues for enhanced UWB communication and sensing capabilities in diverse applications.

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Section: Resultsmentioning

confidence: 99%

“…The initial antenna design follows the design equations of a planar circular antenna as given below [10][11][12][13][14][15]:…”

mentioning

confidence: 99%

Design and Performance Evaluation of a Second-Order Iterated Circular Minkowski Fractal Antenna for Ultra-Wideband Applications

Joseph,

Kumar,

Afullo

2023

Fractal Fract

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“…The impact of the antenna's group delay (GD) on the image quality is analyzed while excluding the antenna's gain to separate one imperfection from the other. GD analysis of antennas has been studied in other areas, such as ultrawideband antennas for communication systems [17]- [20] and GPS applications [21]- [24]. Usual radar calibration methods utilize reference measurements of targets to characterize and compensate for the phase and amplitude imperfections in single-channel [4], [5] and multiple-input and multiple-output (MIMO) radar systems, where phase differences and mutual coupling between antennas become important [25]- [33].…”

Section: Introductionmentioning

confidence: 99%

The Impact of Group Delay Dispersion on Radar Imaging With Multiresonant Antennas

Wittemeier

Sievert

Dedic

et al. 2022

IEEE Microw. Wireless Compon. Lett.

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Radar sensing has become very popular over the last two decades, and research has focused on high-bandwidth and high-resolution systems. Due to the steadily increasing center frequency of front-end circuits, on-chip antennas are the preferred choice over PCB antennas and horn antennas when frequencies get close to THz. However, conventional on-chip antennas are severely limited in bandwidth, leading to increased use of wideband and multiresonant on-chip antennas. Besides a more complex design process of multiresonant antennas, they have the disadvantage of a nonconstant dispersive group delay (GD). This reduces the resolution of sensing systems, such as the range resolution and angular resolution of a radar system. In this work, we show how GD affects the imaging properties of a radar system. The measured S-parameter data from a 240-GHz multiresonant antenna are used to generate synthetic intermediate frequency (IF) signals of a rectangular array. Subsequently, simulated 3-D radar images are generated using the backprojection algorithm. These images are compared with those of a nondispersive imaging system. Finally, two compensation methods using a phase correction method and an all-pass filter are explained, and their performance is compared.

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“…Although the gain is enhanced, the antenna structure is quite bulky. In [29], modification to the patch and ground plane of UWB antenna is adopted to improve its impedance bandwidth. The antenna is fabricated using cost effective 4.4 permittivity FR-4 substrate.…”

Section: Introductionmentioning

confidence: 99%

FR-4 Substrate Based Modified Ultawideband Antenna with Gain Enhancement for Wireless Applications

Tan¹,

Ahmed²,

Hamdi³

et al. 2019

JESTR

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A new circular shape patch ultrawideband (UWB) single feed microstrip antenna is described in this paper. The radiated patch of the proposed UWB antenna is embedded with slots to improve the radiation characteristics ensuring a wide impedance bandwidth. In the ground plane, two rectangular rings slots are etched to provide proper impedance matching over a wide frequency range. The proposed single layer UWB with overall dimensions of 55 mm by 56 mm is fabricated using low cost 4.3 relative permittivity FR-4 substrate. From results obtained, the antenna can provide an impedance bandwidth ranging from 2.2 GHz to more than 12 GHz (138%) that is wider than the standard UWB band. In addition, the modified UWB antenna can enhance the gain to more than 6.6 dB, which is higher than that achieved by the ordinary UWB antenna by more than 16%. Comparison of the modified UWB antenna simulated and measured results shows a close agreement, which enable it to be a promising solution for many wireless applications such as UWB applications, X-band (8-12GHz) satellite communication, portable wireless devices, medical applications, positioning systems cognitive radio and WiMAX 5.4 GHz band application.

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Design and performance analysis of a modified circular planar monopole UWB antenna

Cited by 15 publications

References 11 publications

Design and Performance Evaluation of a Second-Order Iterated Circular Minkowski Fractal Antenna for Ultra-Wideband Applications

Design and Performance Evaluation of a Second-Order Iterated Circular Minkowski Fractal Antenna for Ultra-Wideband Applications

The Impact of Group Delay Dispersion on Radar Imaging With Multiresonant Antennas

FR-4 Substrate Based Modified Ultawideband Antenna with Gain Enhancement for Wireless Applications

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