Analysis on bandwidth enhancement of compact probe‐fed patch antenna with equivalent transmission line model

Malekpoor, Hossein; Jam, Shahrokh

doi:10.1049/iet-map.2014.0384

Cited by 33 publications

(26 citation statements)

References 35 publications

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“…The parallel combination of R 1 L 1 C 1 elements presents the rectangular patch [16], and the inductor X L presents the inductance caused by the fed-probe. X L can be calculated by the formula (1) [17,18].…”

Section: Working Mechanism and Theoretical Analysismentioning

confidence: 99%

Capacitive probe-compensation-fed wideband patch antenna with U-shaped parasitic elements for 5G/WLAN/WiMAX applications

Liu

Wang

et al. 2019

IEICE Electron. Express

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A novel single layer, single capacitive probe-compensation fed wideband patch antenna is presented and investigated. The antenna consists of a rectangular patch and two identical U-shaped parasitic patches. The two U-shaped patches are incorporated around the radiating edges and non-radiating edges of the rectangular patch. For maintaining a relatively small antenna size, the length and width of this rectangular patch are 1/2λ g and 1/4λ g , respectively. A novel capacitive compensation technique, that is an annular gap which is concentric with the fed-probe, can introduce an annular gap capacitor to compensate the inductance caused by the fedprobe. By incorporating the U-shaped parasitic patches, an additional resonant frequency is introduced, which incorporates with the original resonant frequency produced by the rectangular patch, thus the wideband performance is achieved. The measured impedance bandwidth with S 11 ≤ −10 dB is 40% (1.99 GHz) from 4.03 to 6.02 GHz, which covers 4.8-4.99 GHz band of 5G operation in China, GHz), and WiMAX 5.5 GHz (5.25-5.85 GHz). The measured peak gain is 9.1 dBi. An equivalent circuit model is established to provide a clear physical insight into the operation of the proposed antenna.

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Section: Working Mechanism and Theoretical Analysismentioning

confidence: 99%

Capacitive probe-compensation-fed wideband patch antenna with U-shaped parasitic elements for 5G/WLAN/WiMAX applications

Liu

Wang

et al. 2019

IEICE Electron. Express

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“…In Figure , X L represents the inductive reactance of the feed probe of the proposed antenna, which can be calculated using the following formulas given in Refs. .

X_{normalL} = \frac{377 f_{normalr} h}{c_{0}} \ln \frac{c_{0}}{π f_{normalr} d_{0} \sqrt{ɛ_{normalr}}}

…”

Section: Equivalent Circuit Modelmentioning

confidence: 99%

“…In (24), a factor of 2 outside the parentheses is used to include both the two U-shaped parasitic patches. In (23) and (24), the parallel plate capacitance C 1 and C 3 which are directly related to the area of the main patch and one U-shaped parasitic patch, respectively, are the dominant. In Figure 4, X L represents the inductive reactance of the feed probe of the proposed antenna, which can be calculated using the following formulas given in Refs.…”

Section: Coupling Capacitance Due To Gap G Hmentioning

confidence: 99%

Design and analysis of wideband U-slot patch antenna with U-shaped parasitic elements

Liu

Су

et al. 2017

Int J RF Microw Comput Aided Eng

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A single layer single probe‐fed wideband microstrip antenna is presented and investigated. By cutting a U‐slot in the rectangular patch, and by incorporating two identical U‐shaped parasitic patches around both the radiating edges and the nonradiating edges of the rectangular patch, three resonant frequencies are excited to form the wideband performance. Details of the antenna design is presented. The measured and simulated results are in good agreement, the measured impedance bandwidth is 1.44 GHz (4.82‐6.26 GHz), or 26.2% centered at 5.5 GHz, which covers WLAN 5.2 GHz ( 5.15‐5.35 GHz), WLAN 5.8 GHz ( 5.725‐5.825 GHz), and WIMAX 5.5 GHz ( 5.25‐5.85 GHz) bands. The measured peak gains at the three resonant frequencies are 7.73 dB, 7.01 dB, and 4.55 dB, respectively. An equivalent circuit model which is based on the transmission line theory, the asymmetric coupled microstrip lines theory, and the π‐network theory is established. This equivalent circuit model is used to give an insight into the wideband mechanism of the proposed antenna, and is also used to explain why the three resonant frequencies shift at the variations of different parameters from a physical point of view. The error analysis is given to demonstrate the validity of the equivalent circuit model.

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“…By cutting two slots into the patch as E‐shape, the length of the surface current path around the slots is increased. This effect can be modeled as an additional series inductance Δ L . Moreover, an additional capacitance Δ C introduces as a gap capacitance between the middle arm and side arm of the E‐shaped patch .…”

Section: Antenna Array Design and Performancementioning

confidence: 99%

“…This effect can be modeled as an additional series inductance Δ L . Moreover, an additional capacitance Δ C introduces as a gap capacitance between the middle arm and side arm of the E‐shaped patch . In our proposed design, by varying the sizes of the slots on the patches, the values of the inductive and capacitive elements are varied and consequently new resonances occur.…”

Section: Antenna Array Design and Performancementioning

confidence: 99%

Compact 1 × 4 patch antenna array by means of EBG structures with enhanced bandwidth

Jam

Malekpoor

2016

Micro & Optical Tech Letters

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In this paper, a novel design of compact 1 × 4 patch antenna array using electromagnetic band gap (EBG) for wideband operation is introduced. Three unequal arms fed by CPW‐to‐slotline through a coupling system of 100 Ω T‐shaped slotline transitions are utilized for broadening the impedance bandwidth with multiple resonances. By adding two conventional mushroom‐type EBG (CMT‐EBG) structures on both sides of 100 Ω slotline transitions, dual wideband patch array is obtained. The proposed 1 × 4 patch array with CMT‐EBG includes two bands with the measured ranges (S11≤−10 dB) of 6.71–6.97 GHz and 8.60–11.51 GHz. Moreover, more size reduction is achieved by using an edge‐shorted mushroom‐type EBG (ESM‐EBG) for the proposed array. This design with the ESM‐EBG indicates almost 37% size reduction compared with the proposed array without EBG. In this paper, an equivalent circuit model of the proposed 1 × 4 array with EBG is also introduced to describe the process of its bandwidth enhancement. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:2983–2989, 2016

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Analysis on bandwidth enhancement of compact probe‐fed patch antenna with equivalent transmission line model

Cited by 33 publications

References 35 publications

Capacitive probe-compensation-fed wideband patch antenna with U-shaped parasitic elements for 5G/WLAN/WiMAX applications

Capacitive probe-compensation-fed wideband patch antenna with U-shaped parasitic elements for 5G/WLAN/WiMAX applications

Design and analysis of wideband U-slot patch antenna with U-shaped parasitic elements

Compact 1 × 4 patch antenna array by means of EBG structures with enhanced bandwidth

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