Design of multiple U‐shaped slot microstrip patch antenna for 5‐GHz band WLANs

Ju, Jeong Min; Jeong, Gyey-Teak; Yoon, Joong-Han; Ko, Sung-Won; Kwak, Kyungsup

doi:10.1002/mop.20510

Cited by 3 publications

(1 citation statement)

References 14 publications

(6 reference statements)

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“…Multilayer and stacked forms of antennas are one type of that, which are capable to deliver the desired characteristics like broad bandwidth, dual-and multifrequency behavior etc. [1][2][3][4][5][6]. Commercial and freeware computer aided design (CAD) models are available for the analysis of stacked patch antennas.…”

Section: Introductionmentioning

confidence: 99%

Neurocomputational Analysis of Coaxial Fed Stacked Patch Antennas for Satellite and Wlan Applications

Jain¹,

Jain²

2013

PIER C

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Abstract-This paper presents a neural network based technique for the analysis of various stacked patch antennas, those can be applied for satellite and wireless local area network (WLAN) applications. In order to show the diversity of artificial neural network (ANN) modeling technique, two different trained neural networks were developed with different number of antenna geometrical parameters as inputs. These trained networks locate the operational resonance frequencies with their bands for stacked patch antennas (SPA) operating in the XKu (8 GHz-18 GHz) bands and WLAN bands (2 GHz-6 GHz). These frequency bands are useful for satellite communication and indoor wireless communication applications respectively. First ANN model takes design (geometrical) parameters of antenna like lower patch dimension, upper patch dimension, and height of air gap, as a input, whereas other NN model includes feed point location also as a input. The validity of the network is tested with the simulations results obtained from the full-wave Method of Moment (MoM) based IE3D and few experimental results obtained in the laboratory.

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Section: Introductionmentioning

confidence: 99%

Neurocomputational Analysis of Coaxial Fed Stacked Patch Antennas for Satellite and Wlan Applications

Jain¹,

Jain²

2013

PIER C

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Modified planar quasi-Yagi antenna for WLAN dual-band operations

Chang

Liu

2005

Microw. Opt. Technol. Lett.

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identical. This means that the two-point method measures V ( f ) as accurately as the nonlinear response method. MEASURED RESULTSThe nonlinear response of a LiNbO 3 optical modulator with a DC half-wave voltage of 3 V was measured using the experimental setup labelled B in Figure 1. The laser-source wavelength and modulation frequency are 1.55 m and 6.3 GHz, respectively. Figure 3 shows the measured response of the modulator for input RF powers ranging from Ϫ15 to 15 dBm. The detected output powers were normalized with respect to the input RF power of Ϫ15 dBm. Based on the error analysis presented in the previous section, we know that in order to obtain an accurate result for V ( f ), the RF input power should be set as high as possible; however, in order to avoid modulator thermal damage, the maximum RF input power that we can apply is limited. In this experiment, the maximum and minimum RF input powers used were 15 and Ϫ15 dBm, respectively.The detected RF powers together with Eqs. (8) and (9) were used to measure V ( f ). The values obtained are, respectively, 4.168 and 4.166 V, which are approximately equal. This clearly shows that both the nonlinear response the two-point methods have the same precision. Using Eqs. (10b) and (10c) and the approximation f( x 1 ) Ϸ 1, the difference in the values of V ( f ) using Eqs. (8) and (9) is given byFor the maximum and minimum RF input powers of Ϫ15 and 15 dBm, and V (6.3 GHz) ϭ 4.17 V, the result from this formula is 0.09%, which is consistent with the observed range of the measurement result: (4.168 -4.166)/4.167 ϭ 0.05%.The solid line in Figure 3 denotes the linear response of the modulator plotted using Eq. (8b) and the dashed line denotes the calculated response using Eq. (9) with V ( f ) ϭ 4.17 V, where V 1 in Eq. (9) corresponds to the RF input power of Ϫ15 dBm and V 2 varies from Ϫ15 to 20 dBm. Figure 3 shows the response using the measured RF half-wave voltage of V ( f ) ϭ 4.17 V agrees very well with the experimental result. CONCLUSIONFour methods for measuring the RF half-wave voltage V ( f ) of an optical modulator have been presented and compared. The error analysis shows that the optical response and two-tone methods can measure V ( f ) with higher precision. However, compared with these two methods, the nonlinear response and the two-point methods are simpler, requiring only a photodetector and an RF spectrum analyzer, rather than an optical spectrum analyzer. If the selected data points are appropriate, the nonlinear response and two-point methods of measuring V ( f ) will provide the same precision as the former two methods. dBi in band

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Measurements with a Quad Band Field Monitor System for UMTS, LTE and WLAN Communications

Popa

Trip

2019

2019 15th International Conference on Engineering of Modern Electric Systems (EMES)

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Design of multiple U‐shaped slot microstrip patch antenna for 5‐GHz band WLANs

Cited by 3 publications

References 14 publications

Neurocomputational Analysis of Coaxial Fed Stacked Patch Antennas for Satellite and Wlan Applications

Neurocomputational Analysis of Coaxial Fed Stacked Patch Antennas for Satellite and Wlan Applications

Modified planar quasi-Yagi antenna for WLAN dual-band operations

Measurements with a Quad Band Field Monitor System for UMTS, LTE and WLAN Communications

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