Analysis of Reactive Loading in a U-Slot Microstrip Patch Using the Theory of Characteristic Modes [Antenna Applications Corner]

Khan, Mahrukh; Chatterjee, Deb

doi:10.1109/map.2018.2870653

Cited by 18 publications

(5 citation statements)

References 16 publications

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“…When the "U" slot-1 is etched upon the SIW cavity, due to the longer "U"shaped arm, the higher mode TE120 at 6.24 GHz gets perturbed into the first resonant frequency at 3.2 GHz as displayed in Figure 4(a). The length of slot-1 is greater than other slots, so the slot-loading effect is much higher than others, and the difference between the frequencies Comput Sci Inf Technol ISSN: 2722-3221  of the higher mode and the 1 st resonating mode is also high [18]. Similarly, when port 2 is ON and slot 2 is etched over the SIW cavity, the higher mode TE130 at 6.82 GHz turns into the 2 nd resonating frequency of 4.1 GHz due to the slot 2 loading effect as shown in Figure 4(b).…”

Section: The Proposed Self-quadplexing Antennamentioning

confidence: 99%

Self-quadplexing slot antenna for S and C-band applications

Nigam

Muduli²,

Sharma

et al. 2022

Comput. Sci. Inf. Technol.

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This paper demonstrates a novel kind of cavity-backed self-quadplexing slot antenna for the S and C-band applications. The proposed antenna consists of 4 distinct “U”-shaped slots of different lengths and produces the quad frequency band for wireless communication systems. These slots are excited through the separate and orthogonal placed microstrip feed lines of 50 Ω; generates four distinct operating bands at 3.2 GHz, 4.1 GHz, 5.8 GHz, and 7.2 GHz. Due to the perturbation of different U-shaped slots over the substrate integrated waveguide (SIW) cavity with defined positions, the high intrinsic port isolation value is better than 30.5 dB. Thus, the proposed unique antenna structure combines the four independent operating bands with minimum mutual coupling and negligible interference among input ports, which shows the self-quadplexing feature of the antenna. The proposed antenna also has the property of frequency tunability with uni-directional radiation pattern and gain of 5.8 dBi, 5.4 dBi, 4.01 dBi, and 3.47 dBi at corresponding operated frequency. The cross-polarization is 17.3 dB and the front-to-back ratio higher than 21.5 dB at all operating quad bands. There is a good agreement between simulated |S|-parameters results and equivalent circuit model results.

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Section: The Proposed Self-quadplexing Antennamentioning

confidence: 99%

Self-quadplexing slot antenna for S and C-band applications

Nigam

Muduli²,

Sharma

et al. 2022

Comput. Sci. Inf. Technol.

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“…The neutralization line is then used to improve the isolation between the two polarities. The antenna can achieve CP characteristics due to the U-shaped slots etched on metal patches [34][35][36].…”

Section: Introductionmentioning

confidence: 99%

A Simple Single-fed Left/Right-Hand Circular Polarization Antenna for GPS Applications

Meng

Huang

2023

ACES Journal

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A simple single-feeding circular polarization (CP) antenna with controlled left/right-hand characteristics is proposed and investigated for GPS L2 band applications. To achieve the CP characteristics, four arc-shaped cutting corners with different sizes are removed from a circular patch to give 90∘ phase difference to implement CP. By adjusting the radius of the four arc-shaped cutting corners, the antenna can be controlled to get left/right-hand circular polarization (L/RHCP). The proposed CP antenna is modeled, simulated, fabricated and measured, and the results demonstrate that the antenna provides an axial ratio beamwidth over 180 MHz, and impedance bandwidth of 20 MHz for L/RHCP. Additionally, the devised CP antennas have good directional radiating patterns, making them suitable for GPS L2 band applications.

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“…Microstrip antennas are the most widely used antennas in wireless systems because of their advantages such as low cost, small size, and convenient manufacture [1][2][3]. To increase the bandwidth, a U-slot is added to improve the bandwidth of the patch antenna [4][5][6][7]. However, the main disadvantage of the above-mentioned patch antenna is the use of high-loss coaxial cables for interconnection.…”

Section: Introductionmentioning

confidence: 99%

Surface Mounted Microstrip Antenna Using Ball Grid Array Packaging for Mmwave Systems Integration

Wang¹,

Liu²,

Zhang³

et al. 2021

PIER Letters

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In this letter, two cost-effective surface-mount patch antenna elements for millimeter-wave (mmWave) systems using ball grid array (BGA) packaging are presented. A single-layer substrate based on FR4 is used to meet the low-cost requirements. The BGA packaging makes the proposed antenna element compact and easy to integrate. A U-slot is added to the patch to improve the impedance bandwidth of the patch antenna, and a vertical transition is designed to transmit the excitation signal by using a plated through-hole (PTH). The design process of the antenna is illustrated in detail. The antenna prototype has been simulated, fabricated, and measured to validate the design. The size of the fabricated prototype is 5 mm × 5 mm × 1.3 mm, which is very suitable for integration into a mmWave system.

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Analysis of Reactive Loading in a U-Slot Microstrip Patch Using the Theory of Characteristic Modes [Antenna Applications Corner]

Cited by 18 publications

References 16 publications

Self-quadplexing slot antenna for S and C-band applications

Self-quadplexing slot antenna for S and C-band applications

A Simple Single-fed Left/Right-Hand Circular Polarization Antenna for GPS Applications

Surface Mounted Microstrip Antenna Using Ball Grid Array Packaging for Mmwave Systems Integration

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