ACES Publication Search
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| Title: | ACES Express Journal May 2019 Cover |
| File Type: | Express Journal Paper |
| Issue: | Volume: 34 Number: 5 Year: 2019 |
| Download Link: | Click here to download PDF File Size: 2215 KB |
| Title: | ACES Express Journal May 2019 Front/Back Matter |
| File Type: | Express Journal Paper |
| Issue: | Volume: 34 Number: 5 Year: 2019 |
| Download Link: | Click here to download PDF File Size: 1213 KB |
| Title: | ACES Express Journal May 2019 Full |
| File Type: | Express Journal Paper |
| Issue: | Volume: 34 Number: 5 Year: 2019 |
| Download Link: | Click here to download PDF File Size: 25353 KB |
| Title: | A Novel Zigzag Line-based EBG Structure for the Simultaneous Switching |
| Abstract: | Simultaneous switching noise (SSN) generated between the power supply and the ground plane of a high-speed digital circuit is considered to be one of the most important factors affecting the signal integrity of a circuit system. In order to suppress the simultaneous switching noise, a new coplanar electromagnetic band-gap structure is proposed in this paper. Based on the zigzag line and square patch bridge, the inductance between the neighboring units can be enhanced. The results showed that the bandwidth of the band-gap is 0.1 ~ 12.6GHz when the depth of the new electromagnetic band-gap (EBG) structure is -30 db. Compared to the same parameter of the L-bridge structure, the relative bandwidth is about 48.7% and the cut-off frequency of the stop-band lower limit is reduced by 600MHz. The simultaneous switching noise on the power supply plane can be suppressed in all directions, and the signal integrity is less affected when the signal is transmitted by the differential line. |
| Author(s): | Q. Xue, Z. Wang, Y. Tian, P. Wang |
| File Type: | Express Journal Paper |
| Issue: | Volume: 34 Number: 5 Year: 2019 |
| Download Link: | Click here to download PDF File Size: 1311 KB |
| Title: | Modified Combined Tangential Formulation for Stable and Accurate Analysis of Plasmonic Structures |
| Abstract: | We consider a modified combined tangential formulation (MCTF) for stable and accurate analysis of plasmonic problems involving metallic objects modeled as penetrable bodies. For a wide range of negative real permittivity values, corresponding to varying characteristics of metals at THz, infrared, and visible frequencies, MCTF provides accurate solutions in comparison to the conventional formulations for penetrable objects. We further show that, for structures with subwavelength dimensions, penetrable models formulated with MCTF can be essential for accurate analysis, rather than the perfectly conducting formulations, even at the lower THz frequencies. |
| Author(s): | B. Karaosmanoglu, O. Ergul |
| File Type: | Express Journal Paper |
| Issue: | Volume: 34 Number: 5 Year: 2019 |
| Download Link: | Click here to download PDF File Size: 1711 KB |
| Title: | Genetic Algorithm Optimization of a Dual Polarized Concentric Ring Array |
| Abstract: | We use a genetic algorithm to minimize the relative sidelobe level (RSLL) of a dual polarized concentric ring array. The optimization variables are the placement of uniformly weight spiral antennas in an aperture with a small area. We optimized a cost function with isotropic sources instated of spiral elements to make the cost function reasonable to evaluate. We developed approaches to calculate a faster cost function and reduce the number of function calls in the optimization. We then calculated the array with an approximation of the element pattern to evaluate its performances. |
| Author(s): | P. Mendes Ruiz, I. D. Hinostroza Sáenz, R. Guinvarc'h, R. Haupt |
| File Type: | Express Journal Paper |
| Issue: | Volume: 34 Number: 5 Year: 2019 |
| Download Link: | Click here to download PDF File Size: 1551 KB |
| Title: | Design of Double Layers Miniaturized Trimmed Semi-Rectangular Monopole with Partial Ground Plane for Short Ranges Wireless Systems |
| Abstract: | This paper presents a new miniaturized design of antenna with extremely wide bandwidth. The design consists of trimmed half rectangular patch printed on a 10x13 mm2 substrate of Rogers Duroid RT5880Lz with relative permittivity of ɛr=1.96 and loss tangent of 0.0009. The monopole has a partial modified ground plane structure to enhance the impedance matching and to provide wider bandwidth from 2.6 GHz to 15.7 GHz with reflection coefficient less than -10 dB. The proposed design has been tested, optimized, and experimentally measured for verifications; simulated and measured results have achieved high concord. The presented monopole is suitable for short range wireless systems as well as lower 5G bands applications |
| Author(s): | H. Alsaif |
| File Type: | Express Journal Paper |
| Issue: | Volume: 34 Number: 5 Year: 2019 |
| Download Link: | Click here to download PDF File Size: 1369 KB |
| Title: | Gain Enhancement of Microstrip Patch Antenna Using Metamaterial Superstrate |
| Abstract: | In this work, a gain enhancement of conventional microstrip patch antenna has been treated for WLAN applications. About 1.3dB gain enhancement, compared to a conventional patch, has been achieved by loading the microstrip patch with a metamaterial superstrate composed of 2x3 array of Square Split Ring Resonator. Simulations have been carried out using Ansys HFSS. Measured results have been taken to validate the simulation result. |
| Author(s): | H. R. Vani, M. A. Goutham, Paramesha |
| File Type: | Express Journal Paper |
| Issue: | Volume: 34 Number: 5 Year: 2019 |
| Download Link: | Click here to download PDF File Size: 1328 KB |