Studies of Power-Combining of Open Slot Antenna Arrays

Wang, Chien-Jen; Dai, Yang

doi:10.2528/pier11081503

Cited by 11 publications

(10 citation statements)

References 18 publications

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“…Radiation from slots and seams is of greater concern as the speed of the electronic designs increases [9][10][11][12][13][14][15][16][17]. Thin-slot formalism permits inclusion of conducting plates with arbitrarily narrow apertures or gaps without requiring any corresponding need to reduce the cell size to the gap width or depth for the FDTD analysis.…”

Section: Introductionmentioning

confidence: 99%

A Simple Local Approximation FDTD Model of Short Apertures With a Finite Thickness

Xiong¹,

Chen²,

Mao³

et al. 2012

PIER

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Abstract-This paper brings forward a simple local approximation finite-difference time-domain (FDTD) method for the analysis of short apertures with a finite thickness. By applying the equivalence principle together with a simple local approximation, the varying field distribution is accurately derived. The updating equations for the slot field can be derived by casting the field distributions into the contour paths containing the apertures. The method has been applied to two problems and the results are compared with the high-resolution standard FDTD simulation results and the measurement results. The accuracy of the proposed method is verified from the comparison of both the field distribution and the time-domain and frequency-domain slot coupling results. It is demonstrated that the local approximation is highly efficient and timesaving, and the present method is stable, numerically and computationally efficient.

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Section: Introductionmentioning

confidence: 99%

A Simple Local Approximation FDTD Model of Short Apertures With a Finite Thickness

Xiong¹,

Chen²,

Mao³

et al. 2012

PIER

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show abstract

“…Here the sign ∼ means that after integration in expressions (20), only multipliers, depending upon coordinates s 1 and s 2 , are left. Thus, for transverse slot with x 02 = a/2 and for coordinate vibrator, i.e., ϕ = 90 • , exited by fundamental wave, in accordance with (20), we have…”

Section: Vibrator-slot Structure In Rectangular Waveguidementioning

confidence: 99%

“…It may be explained by further development of modern antenna techniques and antenna-feeder devices which can be characterized by such features as multielement structures, integration and modification of structural units to minimize their mass and dimensions and to ensure electromagnetic compatibility of radio aids, application of metamaterials, formation of required spatial-energy and spatial-polarization distributions of electromagnetic fields in various nondissipative and dissipative media. To solve these tasks electric and magnetic radiators, based on various impedance structures with irregular geometric or electrophysical parameters, and on combined vibrator-slot structures, should be created [12][13][14][15][16][17][18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Combined Vibrator-Slot Structures in Electrodynamic Volumes

Nesterenko¹,

Katrich²,

Penkin³

et al. 2012

PIER B

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Abstract-The problem of excitation of electromagnetic fields by a material body of finite dimensions in presence of coupling hole between two arbitrary electrodynamic volumes is formulated. The problem is reduced to two-dimensional integral equations for the surface electric current on a material body and the equivalent magnetic current on a coupling hole. A physically correct transition from the initial integral equations to one-dimensional equations for the currents in a thin impedance vibrator which, in general case, may have irregular geometric parameters, and a narrow slot is justified. A solution of resulting equations system for the transverse slot in the broad wall of rectangular waveguide and a vibrator with variable surface impedance in it was found by a generalized method of induced electro-magneto-motive forces. The calculated and experimental plots of electrodynamic characteristics of a vibrator-slot structure in a rectangular waveguide are presented.

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“…Each element is placed on the vertex of the triangles [10]. The triangular arrangement ensures that the overlap of the aperture between adjacent receiving antennas is minimum and the entire array is uniformly covered by aperture of receiving antennas [17][18][19][20][21][22]. Figure 9 shows the rectenna measurement configures.…”

Section: 45 Ghz Microstrip Rectifier Designmentioning

confidence: 99%

Study on an S-Band Rectenna Array for Wireless Microwave Power Transmission

Huang¹,

Zhang²,

Chen³

et al. 2013

PIER

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Abstract-The microwave power transmission is an approach for wireless power transmission. As an important component of a microwave wireless power transmission systems, microwave rectennas are widely studied. A rectenna based on a microstrip dipole antenna and a microwave rectifier with high conversion efficiency were designed at 2.45 GHz. The dipole antenna achieved a gain of 5.2 dBi, a return loss greater than 10 dB, and a bandwidth of 20%. The microwave to DC (MW-DC) conversion efficiency of the rectifier was measured as 83% with 20 dBm input power and 600 Ω load. There are 72 rectennas to form an array with an area of 50 cm by 50 cm. The measured results show that the arrangement of the rectenna connection is an effective way to improve the total conversion efficiency, when the microwave power distribution is not uniform on rectenna array. The experimental results show that the highest microwave power transmission efficiency reaches 67.6%.

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Studies of Power-Combining of Open Slot Antenna Arrays

Cited by 11 publications

References 18 publications

A Simple Local Approximation FDTD Model of Short Apertures With a Finite Thickness

A Simple Local Approximation FDTD Model of Short Apertures With a Finite Thickness

Combined Vibrator-Slot Structures in Electrodynamic Volumes

Study on an S-Band Rectenna Array for Wireless Microwave Power Transmission

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