A comparative study of the PIFA and printed monopole antenna EM absorption

AbstractThis paper represents a comparative study on electromagnetic (EM) absorption in the human head between a printed monopole antenna and a planar inverted-F antenna (PIFA). The specific absorption rate (SAR) values and total absorbed power in the human head phantom are used to evaluate EM absorption for both antennae. Moreover, antenna performances in terms of return loss, radiation efficiency, and gain are also investigated in this study. The finite integration technique (FIT) based on CST Microwave studio and SAM head phantom are used in this study. The antenna performances are measured in an anechoic chamber and the SAR is tested using COMOSAR measurement system. The obtained results indicate that the printed monopole antenna lead to higher EM absorption in the human head as compared to PIFA for both GSM frequencies.

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Printed UWB Antenna with Coupled Slotted Element for Notch-Frequency Function

International Journal of Antennas and Propagation ◽

10.1155/2008/713921 ◽

2008 ◽

Vol 2008 ◽

pp. 1-8 ◽

Cited By ~ 15

Author(s):

X. L. Bao ◽

M. J. Ammann

Keyword(s):

Parametric Study ◽

Return Loss ◽

Measured Data ◽

Monopole Antenna ◽

Frequency Function ◽

Uwb Antenna ◽

Printed Monopole Antenna ◽

Printed Monopole ◽

Slotted Plate

A novel printed monopole antenna employing a slotted-plate, which is electromagnetically coupled to the microstrip-fed planar element, is proposed to provide notch-frequency function. This technique enables stopband characteristics with improved control, compared to placing the slot in the microstrip-fed element. A detailed investigation of the rejectband properties has been made for the UWB antenna. Measured data for the optimized case show the 10 dB return loss bandwidth to be 9.8 GHz (from 2.80 GHz to 12.60 GHz) with a notchband frequency from 5.15 GHz to 5.825 GHz. Propagation measurements indicate that the electromagnetically coupled slot provides a greater reduction in stopband gain for the three principal planes, compared to placing the slot in the fed element. This is desirable to mitigate interference from WLAN systems. A full parametric study of the antenna is presented.

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A Broadband Dual Circularly Polarized Compact Printed Monopole Antenna

10.21203/rs.3.rs-414741/v1 ◽

2021 ◽

Author(s):

Rohit Kumar Saini

Keyword(s):

Microstrip Line ◽

Return Loss ◽

Ground Plane ◽

Axial Ratio ◽

Monopole Antenna ◽

Circularly Polarized ◽

Antenna Performance ◽

Printed Monopole Antenna ◽

Printed Monopole ◽

Better Than

Abstract A microstrip line –fed broadband dual circular polarized, two port printed monopole antenna is presented. The antenna consists of a ground plane with arrow shaped stub at the corner and a pair of inverted L-shaped feed lines. The 3dB axial ratio bandwidth of the antenna is about 58%(1.7GHz-3.1GHz) in which the return loss and isolation are better than 10dB and 12dB respectively. A parametric study of proposed antenna’s geometric parameters is given for understanding of the antenna performance. The realize gain, reflection coefficient (S 11 ) and transmission coefficient (S 21 ) are higher than 1, 10 and 12dB respectively within the entire axial ratio bandwidth (ARBW).

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A Compact Multi-Band Monopole Antenna using Metamaterial for WLAN/WiMAX Applications

Advanced Electromagnetics ◽

10.7716/aem.v8i3.929 ◽

2019 ◽

Vol 8 (3) ◽

pp. 92-98

Author(s):

F. Mouhouche ◽

A. Azrar ◽

M. Dehmas ◽

K. Djafri

Keyword(s):

Resonance Frequency ◽

Return Loss ◽

Unit Cell ◽

Monopole Antenna ◽

Strip Line ◽

Antenna Structure ◽

Unit Cells ◽

Magnetic Couplings ◽

Printed Monopole Antenna ◽

Printed Monopole

In this paper, a tri-band printed monopole antenna with electrically coupled metamaterial units is proposed and investigated. The proposed antenna is designed to cover WLAN/WiMAX applications. The antenna consists of a printed strip line and two double metamaterial unit cells of different size placed near the monopole antenna on opposite sides. Each unit cell exhibits a negative permeability over the resonance frequency at 2.5 GHz and 3.62 GHz, which produces magnetic couplings with the monopole antenna. The proposed antenna structure was fabricated and measured. The measured -10 dB bandwidth for the return loss is from 2.47GHz-2.51GHz, 3.59GHz-3.69GHz, and 5.3GHz - 7.2 GHz, which are suitable for (WLAN: 2.4–2.484, 5.15–5.35, and 5.725–5.85 GHz) and (WiMAX: 2.5–2.69, 3.4–3.8, and 5.25–5.85 GHz) band Applications. By using the switches across the gap of proposed-MTM unit cell, the effect of this unit deactivated and its resonance frequency will disappear. Hence, the proposed antenna maintains the omnidirectional radiation pattern.

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A rhomboid-shaped printed monopole antenna for wideband circular polarization

Serbian Journal of Electrical Engineering ◽

10.2298/sjee2103385l ◽

2021 ◽

Vol 18 (3) ◽

pp. 385-396

Author(s):

Zaw Lwin ◽

Thae Aye

Keyword(s):

Circular Polarization ◽

Return Loss ◽

Ground Plane ◽

Axial Ratio ◽

Monopole Antenna ◽

Center Frequency ◽

Wireless Applications ◽

Monopole Antennas ◽

Printed Monopole Antenna ◽

Printed Monopole

This paper presents the design of a wideband circularly-polarized printed monopole antenna with a rhomboid shape. The rhomboid-shaped patch is fed by a microstrip line offset from the center to generate circular polarization (CP). The ground plane configuration is optimized for wide bandwidth operation. Bandwidth (satisfying both 10-dB return loss and 3-dB axial ratio) of 76% (1.92 - 4.27 GHz) is achieved in this research. The size of the proposed antenna is 0.386 2 0 l (55?66 mm2) where ?0 is the free space wavelength which corresponds to the center frequency of the bandwidth. The antenna has a fractional bandwidth-size ratio (BW/size) of 1.97 which is higher than most CP monopole antennas in the literature. This antenna is suitable for Wi-Fi, WiMAX, and other wireless applications which outperform using circular polarization.

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