TD-UAPO diffracted field evaluation for penetrable wedges with acute apex angle

Frongillo, Marcello; Gennarelli, Gianluca; Riccio, Giovanni

doi:10.1364/josaa.32.001271

Cited by 15 publications

(5 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…An FR4 printed circuit board (PCB) with an overall size of 110.00 mm × 85.00 mm × 1.75 mmnmm×85.00mm×1.75m, which contains a signal processing circuit and DSP, is fixed on the back of the ground plane of the antenna, sandwiching a foam layer with a thickness of 8 mm. The diffraction effect to the PCB from radiating elements can be overlooked [23,24]. The circuit is powered by a 12 V DC source.…”

Section: Radiating Elementmentioning

confidence: 99%

Smart antenna with automatic beam switching for mobile communication

Wang

et al. 2020

J Wireless Com Network

View full text Add to dashboard Cite

A new kind of smart antenna capable of automatically switching its main beam to track a moving target is presented. The antenna, which is suitable for mobile communication in long straight spaces, such as railways or highways, integrates a sensing element, signal processing element, and radiating element. The sensing element works based on a frequency-modulated continuous wave and delivers a beat frequency signal containing environmental information to the signal processing element, which is used to control the excitation of the radiating element. To verify the efficiency of the proposed antenna, a prototype is fabricated and implemented in a real corridor scenario. Furthermore, the error vector magnitude (EVM) along the test path is investigated to evaluate the system performance when using the proposed antenna. The results show that this kind of smart antenna is capable of improving mobile communication quality and decreasing energy consumption. Therefore, it is a promising candidate for mobile communication.

show abstract

Section: Radiating Elementmentioning

confidence: 99%

Smart antenna with automatic beam switching for mobile communication

Wang

et al. 2020

J Wireless Com Network

View full text Add to dashboard Cite

show abstract

“…Moreover, the overall module design with a 2:1 parallelism ratio between the lower level and the above level always works. It is a fact that is preferable to analyze the scattering problems of the TD framework rather than in the frequency domain (FD) [21]. Hence, the proposed architecture has strong application value.…”

Section: Proposed Multi-level Dwt Architecturementioning

confidence: 99%

An Internal Folded Hardware-Efficient Architecture for Lifting-Based Multi-Level 2-D 9/7 DWT

Zhang

et al. 2019

Applied Sciences

View full text Add to dashboard Cite

In this paper, a novel internal folded hardware-efficient architecture of multi-level 2-D 9/7 discrete wavelet transform (DWT) is proposed. For multi-level DWT, the unfolded structure is more extensively used compared with the folded structure, because of its low memory consumption and low time delay. However, a set of input data valid every few clock cycles caused the mismatch between clock and data in the unfolded structure. The mismatch usually needs to be solved by multi-clock or complex data adjustment, which increases the consumption of hardware resources and the complexity of the overall system. To solve the above problem of the unfolded structure, we adjust the data input timing by using a single clock domain and folding the DWT architecture of different levels in varying degrees, according to their own clock-to-data ratios. For an image of size of N × N pixels and 3-level DWT, the proposed architecture requires only 6N words temporal memory. For 3-level DWT with an image of size 512 × 512 pixels, the hardware estimation and comparison of the existing architectures show that, the hardware estimation result shows at least 30.6% area-delay-product (ADP) decrease, and at least 22.4% transistor-delay-product (TDP) decrease for S = 8, and 25.77% transistor-delay-product (TDP) decrease for S = 16.

show abstract

“…In the case of structures with multiple surfaces interacting with the electromagnetic field, one of the advantages of the UAPO approach is to exploit the linearity of the scattering integral to attain the diffracted field as a linear combination of contributions associated to the edges of the involved surfaces [11][12][13][14][15][16]. The authors have recently exploited this feature to solve the problem tackled here and to obtain useful expressions and numerical preliminary results in [17], where the ability of the UAPO diffracted field to compensate the jump of the geometrical optics (GO) field at the reflection and transmission shadow boundaries has been demonstrated.…”

Section: Introductionmentioning

confidence: 99%

Junction of Two Coplanar Resistive Half-Planes: A Uniform Asymptotic Solution for the Plane Wave Diffraction and Validation Tests

2023

RSL

View full text Add to dashboard Cite

The electromagnetic scattering by two coplanar resistive half-screens with different surface resistivity is considered in the case of plane waves at skew incidence with respect to the discontinuity. Reflection and transmission coefficients for parallel and perpendicular polarizations are determined accounting for the resistive boundary conditions in correspondence of the screens. Such coefficients are adopted for the calculation of the geometrical optics field and also used to apply the Uniform Asymptotic Physical Optics approach for the evaluation of the diffracted field. The corresponding total field is here validated by means of comparisons with data obtained by the radio-frequency module of a full-wave commercial tool.

show abstract

TD-UAPO diffracted field evaluation for penetrable wedges with acute apex angle

Cited by 15 publications

References 11 publications

Smart antenna with automatic beam switching for mobile communication

Smart antenna with automatic beam switching for mobile communication

An Internal Folded Hardware-Efficient Architecture for Lifting-Based Multi-Level 2-D 9/7 DWT

Junction of Two Coplanar Resistive Half-Planes: A Uniform Asymptotic Solution for the Plane Wave Diffraction and Validation Tests

Contact Info

Product

Resources

About