Dual-Band High-Gain Differentially Fed Circular Patch Antenna Working in TM<sub>11</sub> and TM<sub>12</sub> Modes

Zhang, Xiao; Li, Zhu

doi:10.1109/tap.2018.2819704

Cited by 40 publications

(15 citation statements)

References 29 publications

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“…However, the traditional MPA is unsuitable to be well applied for multiband communication owing to its seriously distorted radiation patterns of higher modes. To address this critical issue, a few effective approaches have been proposed and investigated over the past two decades [2][3][4][5][6][7][8][9][10][11][12][13][14][15].…”

Section: Introductionmentioning

confidence: 99%

“…Recently, it has been exhibited that several resonant modes of a single MPA could be used to generate multi-band radiation. In [10], the TM 11 mode in combination with TM 12 mode of the antenna was utilised for dual-band radiation. Through reforming the patch radiator [11], the lower and upper frequencies of the antenna were simultaneously excited at ∼2.76 and 5.23 GHz under dual-mode operation.…”

Section: Introductionmentioning

confidence: 99%

“…Through reforming the patch radiator [11], the lower and upper frequencies of the antenna were simultaneously excited at ∼2.76 and 5.23 GHz under dual-mode operation. The work in [12] depicted that the MPA maintained a dual-band function by exciting a cavity mode with a slot mode together, but the improved radiating patch or feeding scheme [10][11][12] increases the complexity in antenna design. More importantly, only two working bands were excited for these MPAs with stable normal radiation patterns.…”

Section: Introductionmentioning

confidence: 99%

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Low‐profile triple‐band microstrip antenna via sharing a single multi‐mode patch resonator

Liu

Chen

et al. 2019

IET Microwaves, Antennas & Propagation

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A low‐profile microstrip patch antenna (MPA) operating in triple WLAN bands (2.4 /5.2 /5.8 GHz) with stable broadside radiation is proposed by employing TM10, TM12, and TM30 modes. Firstly, the TM12 mode of the MPA could be excited at around 5.8 GHz by properly selecting its dimensions. Meanwhile, a linear slot is etched out at the center of the radiating patch to transform the radiated fields of TM12 and TM30 modes into the broadside radiation with low sidelobe level. Secondly, the shorting pins are symmetrically loaded underneath the patch, aiming to improve the input impedance matching of TM10 mode and push up its resonant frequency to around 2.4 GHz. Thirdly, a pair of parallel slots is near the radiating edges of the patch radiator, thus extending the surface current distribution of TM30 mode and reallocating its resonant frequency to around 5.2 GHz. In final, the prototype antenna is fabricated and measured to validate its working principle. The results illustrate that this low‐profile MPA makes these three radiative modes resonate at around 2.44, 5.22, and 5.82 GHz, respectively. Most importantly, a stable normal radiation pattern with low cross‐polarisation and sidelobe levels is maintained for the proposed antenna as well.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Low‐profile triple‐band microstrip antenna via sharing a single multi‐mode patch resonator

Liu

Chen

et al. 2019

IET Microwaves, Antennas & Propagation

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“…Its basic working mechanism is based on far‐field superposition of two circular patch radiators operating in TM 11 and TM 31 modes. Last but not least, slots loading technique has been also developed for radiation improvement of high‐order‐mode patch antennas . It is first reported in Reference that a single nonresonant narrow slot embedded in the TM 12 ‐mode circular patch antenna can significantly suppress E‐plane sidelobe radiation, because the introduced slot produces additional far‐field components for superposition.…”

Section: Introductionmentioning

confidence: 99%

“…Last but not least, slots loading technique has been also developed for radiation improvement of high-ordermode patch antennas. [11][12][13] It is first reported in Reference 11 that a single nonresonant narrow slot embedded in the TM 12 -mode circular patch antenna can significantly suppress E-plane sidelobe radiation, because the introduced slot produces additional far-field components for superposition. After that, our previous work 12 further demonstrates that the slot loading can not only reduce the E-plane SLL, but also flexibly adjust the H-plane beamwidth of a TM 03 -mode square patch antenna.…”

Section: Introductionmentioning

confidence: 99%

Slot loading effect on impedance and radiation performance of high‐gain patch antenna under TM ₀₃ ‐mode operation

Hong

Zhang

et al. 2019

Int J RF Microw Comput Aided Eng

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Based on antenna's impedance and radiation performance, the slot loading effect on the TM03‐mode high‐gain square patch antenna is investigated in this paper. Three different slot configurations are loaded to the patch along the central line, which can reduce the sidelobe in the E‐plane. However, it is found that the H‐plane beamwidth, impedance bandwidth and radiation Q factor become significantly different in these cases. At first, broader H‐plane beamwidth, lower Q factor and wider impedance bandwidth can be obtained when only single slot is loaded in the center of the patch. In contrast, when two open slots are etched at two nonradiative edges of the patch, it will result in narrower H‐plane beamwidth, higher Q factor and narrower impedance bandwidth. Moreover, better balanced performance can be achieved by simultaneously loading the central and sided slots. For validation, three kinds of antenna prototypes are designed, fabricated, and measured. The measured and simulated results agree well with each other, which demonstrate that different impedance and radiation performance can be freely adjusted and achieved by using different slot configurations.

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Higher order dual‐resonant reduced size high gain patch antenna with enhanced bandwidth

Bhattacharyya

Patra

Gupta

2022

Int J RF Mic Comp-Aid Eng

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This work presents a bandwidth enhanced high gain rectangular patch antenna operating under two similar spectrally close modes created from a TM 50 -like mode in the vicinity of another higher order mode of the patch. The patch is embedded with two wide slots and meandered linkages are used to maintain current continuity. The whole structure is studied using the theory of characteristic modes and the excitation of these higher order modes is controlled to enhance the bandwidth. One of the two similar modes is very weakly excited and does not affect the antenna's performance. The beam tilting at lower frequencies are compensated by properly choosing the capacitors as phase shifter elements on the meander linkages. The antenna size is miniaturized by properly choosing the dimensions of the meander linkages and the resonant length is reduced by λ/2 as compared to that of a conventional TM 50 mode supporting patch. The patch size becomes 3.35 Â 4.03λ/2 instead of 5 Â 5λ/2 (λ is the substrate wavelength). The coaxial probe fed structure exhibits a good performance of impedance bandwidth of 10.5% around the center frequency of 5.7 GHz with a gain variation 10-12 dBi, which appear to be better than other antennas of similar size. K E Y W O R D Sbeam tilting, enhanced bandwidth, high gain, higher order mode, meander lines, rectangular micro strip patch, theory of characteristic modes, wide slot.

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Dual-Band High-Gain Differentially Fed Circular Patch Antenna Working in TM₁₁ and TM₁₂ Modes

Cited by 40 publications

References 29 publications

Low‐profile triple‐band microstrip antenna via sharing a single multi‐mode patch resonator

Low‐profile triple‐band microstrip antenna via sharing a single multi‐mode patch resonator

Slot loading effect on impedance and radiation performance of high‐gain patch antenna under TM ₀₃ ‐mode operation

Higher order dual‐resonant reduced size high gain patch antenna with enhanced bandwidth

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Dual-Band High-Gain Differentially Fed Circular Patch Antenna Working in TM11 and TM12 Modes

Cited by 40 publications

References 29 publications

Low‐profile triple‐band microstrip antenna via sharing a single multi‐mode patch resonator

Low‐profile triple‐band microstrip antenna via sharing a single multi‐mode patch resonator

Slot loading effect on impedance and radiation performance of high‐gain patch antenna under TM 03 ‐mode operation

Higher order dual‐resonant reduced size high gain patch antenna with enhanced bandwidth

Contact Info

Product

Resources

About

Dual-Band High-Gain Differentially Fed Circular Patch Antenna Working in TM₁₁ and TM₁₂ Modes

Slot loading effect on impedance and radiation performance of high‐gain patch antenna under TM ₀₃ ‐mode operation