ACES Publication Search
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| Title: | ACES Journal November 2017 Cover |
| Abstract: | ACES |
| Author(s): | |
| File Type: | Journal Paper |
| Issue: | Volume: 32 Number: 11 Year: 2017 |
| Download Link: | Click here to download PDF File Size: 2140 KB |
| Title: | ACES Journal November 2017 Front/Back Matter |
| Abstract: | ACES |
| Author(s): | |
| File Type: | Journal Paper |
| Issue: | Volume: 32 Number: 11 Year: 2017 |
| Download Link: | Click here to download PDF File Size: 188 KB |
| Title: | ACES Journal November 2017 Full |
| Abstract: | ACES |
| Author(s): | |
| File Type: | Journal Paper |
| Issue: | Volume: 32 Number: 11 Year: 2017 |
| Download Link: | Click here to download PDF File Size: 12999 KB |
| Title: | Realistic Full Wave Modeling of Focal Plane Array Pixels |
| Abstract: | In this paper we investigate full-wave simulations of realistic implementations of multifunctional nanoantenna enabled detectors (NEDs). We focus on a 2x2 pixelated array structure that supports two wavelengths of operation. We design each resonating structure independently using full-wave simulations with periodic boundary conditions mimicking the whole infinite array. We then construct a supercell made of a 2x2 pixelated array with periodic boundary conditions mimicking the full NED; in this case, however, each pixel comprises 10-20 antennas per side. In this way, the cross-talk between contiguous pixels is accounted for in our simulations. We observe that, even though there are finite extent effects, the pixels work as designed, each responding at the respective wavelength of operation. This allows us to stress that realistic simulations of multifunctional NEDs need to be performed to verify the design functionality by taking into account finite extent and cross-talk effects. |
| Author(s): | S. Campione, L. K. Warne, R. E. Jorgenson, P. S. Davids, D. W. Peters |
| File Type: | Journal Paper |
| Issue: | Volume: 32 Number: 11 Year: 2017 |
| Download Link: | Click here to download PDF File Size: 1706 KB |
| Title: | The Analogy between Offset Configurations of Parabolic Reflectors and Reflectarrays |
| Abstract: | The analogous relationship between the design parameters of offset parabolic reflectors and offset reflectarrays is delineated. Each antenna is specified with four design parameters that best describe the system setup, and the mathematical relationship between the design parameters of these two antenna systems are determined. The presented study allows one to determine the analogous reflectarray system based on the design parameters of the offset reflector and vice versa. This makes it possible to simplify the configuration setup in offset reflectarrays using a coordinate system and a set of parameters that is very suitable for reflectarray design and analysis. |
| Author(s): | P. Nayeri, A. Z. Elsherbeni, F. Yang |
| File Type: | Journal Paper |
| Issue: | Volume: 32 Number: 11 Year: 2017 |
| Download Link: | Click here to download PDF File Size: 1688 KB |
| Title: | A Tunable Antenna with the Combination of Two Kinds of Liquid Materials |
| Abstract: | A tunable antenna consists of two kinds of liquid materials is designed and investigated for the first time. Compared with single liquid antenna, the antenna with two kinds of liquids offers more flexibility for the designing. Insoluble liquid such as oil can be used together with the distilled water, the sea water or saline water. A thin pole is added to make use of the fluidity of liquid and bring adjustment to the antenna according to the principle of communicating vessels. The comparison of pure liquid and the combination of different materials are carried out first. Furthermore, the influence of the distribution of the liquid materials, the feeding locations and the length of the feeding probe are analyzed. The simulation results indicate the radiation potential and the reconfigurability of the antenna. To drag out or push in the adjustment pole as well as to change the parameters of the structure can bring the variations of the antenna performance effectively, including the matching and the radiation features. |
| Author(s): | G. Li, G. Gao, L. Bian, Z. Lu, C. Song |
| File Type: | Journal Paper |
| Issue: | Volume: 32 Number: 11 Year: 2017 |
| Download Link: | Click here to download PDF File Size: 1862 KB |
| Title: | Modeling and Realization of Cavity-Backed Dual Band SIW Antenna |
| Abstract: | Herein, substrate integrated waveguide technology is applied in order to design high performance dual-band microstrip patch antennas. Two microstrip patch antenna designs were studied and modeled in 3D electromagnetic simulators. The obtained optimal models were then realized and measured. The measurement performance of the proposed antenna designs were then measured for 2.4 and 5.6 GHz. The results suggest that the proposed model consisting of a modified microstrip cavity-backed antenna and a defected ground structure is a high performance and low cost solution for 2.4 and 5.6 GHz applications. |
| Author(s): | M. A. Belen, P. Mahouti, A. Caliskan, A. Belen |
| File Type: | Journal Paper |
| Issue: | Volume: 32 Number: 11 Year: 2017 |
| Download Link: | Click here to download PDF File Size: 1822 KB |
| Title: | Superformula-Based Compact UWB CPW-Fed-Patch Antenna With and Without Dual Frequency Notches |
| Abstract: | This paper presents two new designs of UWB coplanar waveguide (CPW)-fed-patch antennas operating in the FCC frequency band (3.1-10.6 GHz). The first design uses the superformula to produce a circular patch with sawtooth-like circumference. As compared to a regular circular patch antenna whose diameter is 25 mm, the proposed circular patch has a smaller diameter of 18.2 mm. Moreover, the proposed antenna covers the entire FCC band unlike a regular circular patch of the same radius. The second design introduces two frequency notches at 3.3-3.8 GHz (WiMAX) and 5-5.9 GHz (WLAN) using two arc shaped circular slots etched on the circular patch and a split-ring resonator (SRR) that is placed on the opposite side of the substrate. Measurements and simulations using HFSS show that the return loss is better than 10 dB across the band except at the two notch locations in Design II. Results are also presented for the radiation pattern and peak gain of both designs. Each of the proposed antennas has a compact size of 24 mm x 19 mm on a 1.5 mm Rogers Substrate (epsilon r=3.85). |
| Author(s): | A. A. Omar, S. Naser, M. I. Hussein, N. I. Dib, M. W. Rashad |
| File Type: | Journal Paper |
| Issue: | Volume: 32 Number: 11 Year: 2017 |
| Download Link: | Click here to download PDF File Size: 1949 KB |
| Title: | Single-, Dual- and Wide-Band Frequency-Reconfigurable Antenna with Annular Ring Slots |
| Abstract: | This paper presents a frequency reconfigurable antenna enabled using a pair of annular ring slots on a coplanar waveguide (CPW) ground plane. Its initial wideband operation mode from 3 GHz to 6 GHz can be reconfigured into six additional modes: a dual–band mode and five single-band modes, with minimum reflection coefficients (S11) of -10 dB. For demonstration and proof-of-concept purposes, metal switches have been used to represent the switches in simulations and measurements. The ON state is emulated using shorted metal switches, whereas the OFF state is emulated using an open. Good agreements are indicated for simulated and measured S11 and radiation patterns. |
| Author(s): | M. C. Lim, S. K. A. Rahim, M. R. Hamid, P. J. Soh, M. I. Sabran, A. A. Eteng, M. R. Ramli |
| File Type: | Journal Paper |
| Issue: | Volume: 32 Number: 11 Year: 2017 |
| Download Link: | Click here to download PDF File Size: 2128 KB |
| Title: | Dual-Band Antenna for High Gain M2M Communication Using PRS |
| Abstract: | A bi-layered, dual-band microstrip antenna for high gain Machine-to-Machine (M2M) communication environment is presented in this paper. This antenna covers WiMAX (3.3-3.7 GHz) and WLAN (4.9-5.1 GHz) bands. The radiating patch is printed on Rogers RT/ Duroid 5880 substrate. A partial ground plane is used to enhance the bandwidth of antenna. A Partial Reflecting Surface (PRS) layer is employed below the antenna layer in order to enhance the gain and bandwidth of the antenna. More importantly, the proposed PRS employed antenna provides gain enhancement of 4.3 dB and 4.4 dB at WiMAX and WLAN bands respectively. Simulated and measured results make this arrangement a potential candidate for high gain Machine-to-Machine (M2M) communication. |
| Author(s): | S. Bibi, R. Saleem, A. Quddus, S. ur Rehman, M. F. Shafique |
| File Type: | Journal Paper |
| Issue: | Volume: 32 Number: 11 Year: 2017 |
| Download Link: | Click here to download PDF File Size: 2082 KB |
| Title: | A Compact Quad-band CPW-fed Planar Resonator for Multiple Wireless Communication Applications |
| Abstract: | This article presents a low-cost, compact antenna with coplanar waveguide (CPW) feed line for multiband wireless applications. The presented multiband radiator is envisioned for integration into microwave circuits and portable RF devices. The prototype is realized on 1.6 mm thick readily available FR4 substrate with a compact geometrical size of 24×32 mm2. The acquired quad-bands are centered at: 2.45, 3.5, 5.2 and 5.8 GHz justifying the appropriateness of the proposed radiator for the WLAN and WiMAX applications, as well as Bluetooth and ISM wireless standards. From the aspect of integration into transportable handheld devices and system designing, the presented compact antenna illustrates more expandability and flexibility. The radiation characteristics measured in the E and H-planes for desired operating frequencies are monopole-like and omni-directional, respectively. A sufficient gain is also achieved. Simulated as well as experimental results exhibit agreeable behavior. |
| Author(s): | A. Khan, S. I. Naqvi, F. Arshad, Y. Amin, H. Tenhunen |
| File Type: | Journal Paper |
| Issue: | Volume: 32 Number: 11 Year: 2017 |
| Download Link: | Click here to download PDF File Size: 2111 KB |
| Title: | A Ring Resonator Based Wide-Band Band Pass Filter with Single Loaded Stub and Compact Structure |
| Abstract: | A compact and simple structure of a wideband band pass filter (BPF) based on ring resonator (RR) topology with only one open circuited stub is proposed. The pass band characteristic of the RR is achieved by placing the output port co-axial to the input port, at a position along the resonator length with maximum electric field. Subsequently wide operating bandwidth is realized by controlling the length of loaded stub due to its degenerate modes. An analytical equation is proposed based on even-odd mode analysis of a simplified transmission line model centrally loaded with stub to theoretically predict the positions of transmission zeros. A cascaded structure of two stub-loaded RRs filter with improved out of band rejection is designed and fabricated at 3 GHz. The insertion loss (IL) and return loss (RL) are better than 1.7 dB and 12.3 dB with a 3-dB fractional bandwidth of 47%. The two transmission zeros at 2.26 GHz and 3.8 GHz show rejections better than 37 dB. Furthermore, the area of the filter is reduced by special placement of the open circuited stubs inside the rings. It is shown that the compact filter is 33% area efficient with comparable performance parameters. |
| Author(s): | Z. B. Khan, H. Zhao |
| File Type: | Journal Paper |
| Issue: | Volume: 32 Number: 11 Year: 2017 |
| Download Link: | Click here to download PDF File Size: 1775 KB |
| Title: | LTCC Distributed-Element Bandpass Filter with Multiple Transmission Zeros Using Non-Resonating Node |
| Abstract: | A distributed-element low temperature co-fired ceramic (LTCC) bandpass filter (BPF) with multiple transmission zeros using non-resonating node (NRN) is proposed. By fully taking advantage of the LTCC technology in 3-dimentional (3-D) environment, the employed dual-mode stub-loaded stepped-impedance resonator (SIR) and the NRN are reasonably folded, and miniature circuit size can be obtained. Meanwhile, four transmission zeros are produced in both sides of the passband to realize sharp rejection skirts. For demonstration, a four-pole LTCC BPF using the NRN centered at 3.65 GHz is designed, fabricated and measured. Simulated and measured results are presented, showing good agreement. |
| Author(s): | Y. Zhan, W. Qin, Q.-Y. Lu, J.-X. Chen |
| File Type: | Journal Paper |
| Issue: | Volume: 32 Number: 11 Year: 2017 |
| Download Link: | Click here to download PDF File Size: 1799 KB |
| Title: | Forward Scattering from a Three Dimensional Layered Media with Rough Interfaces and Buried Object(s) by FDTD |
| Abstract: | In this paper, the finite difference time domain (FDTD) method is implemented to analyze the scattered field from a three dimensional structure including two-layer rough interfaces with or without buried object(s). The effects of different parameters such as rough interface correlation length as well as its root mean square (rms) height, the moisture content of the soil, also the buried object position and size on the scattered field are studied. Simulations show that by increasing the soil moisture, the level of scattering from the structure (without the buried object) is increased. In addition, it is shown that the same amount of moisture change, but in different percentage level, shows completely different effect on the scattering level. Furthermore, it is observed that changing the correlation length in the small perturbation range does not have a significant effect on the scattering coefficients. Moreover, images from the buried objects are obtained to show the visualization of object observation with different materials in a background. The solution has been validated by the finite integration based commercial software, CST. |
| Author(s): | S. H. Mirjahanmardi, P. Dehkhoda, A. Tavakoli |
| File Type: | Journal Paper |
| Issue: | Volume: 32 Number: 11 Year: 2017 |
| Download Link: | Click here to download PDF File Size: 2578 KB |
| Title: | Left-Handed Metamaterial Lens Applicator with Built-in Cooling Feature for Superficial Tumor Hyperthermia |
| Abstract: | In all hyperthermia schemes with lefthanded metamaterial (LHM) lens applicator, water bolus are used to prevent skin from being overheated during the hyperthermia treatment. Owing to water’s high refraction index, high reflection usually occurs at the interface between low-index LHM lens and water bolus, and between water and skin, which will lead to the low efficiency of hyperthermia. In this paper, we propose a new LHM lens applicator with built-in cooling feature for superficial tumor hyperthermia. Both simulation and experiment demonstrated that microwave hyperthermia with the proposed applicator may concentrate more microwave energy into deeper tissue if compared to hyperthermia with normal LHM lens. |
| Author(s): | Y. Tao, E. Yang, G. Wang |
| File Type: | Journal Paper |
| Issue: | Volume: 32 Number: 11 Year: 2017 |
| Download Link: | Click here to download PDF File Size: 1726 KB |
| Title: | A Hybrid FEM-GO Approach to Simulate the NSA in an Anechoic Chamber |
| Abstract: | A hybrid FEM-GO method is proposed and a new CAD tool based on it is developed for anechoic chamber simulation. The proposed method can deal with a chamber with arbitrary shape and arbitrary layout of radio absorbing material. The normalized site attenuation values are simulated and match the measurement results well. It is shown that the proposed method is an efficient and effective way for chamber design and simulation. |
| Author(s): | Q. Xu, Y. Huang, X. Zhu, L. Xing, P. Duxbury, J. Noonan |
| File Type: | Journal Paper |
| Issue: | Volume: 32 Number: 11 Year: 2017 |
| Download Link: | Click here to download PDF File Size: 2324 KB |
| Title: | Two-Section Impedance Transformer Design and Modeling for Power Amplifier Applications |
| Abstract: | In this paper, two-section impedance transformer network (TSITN) is modeled and used for power amplifiers applications. The artificial neural network (ANN) is used to propose an appropriate model for TSITN. The proposed model could predict the desired input and output impedances at desired frequencies using TSITN dimensions, which could be suitable for input and output matching network of a power amplifier. Using two-section impedance transformer network instead of conventional impedance transformer network (ITN) could miniaturize the input and output matching network size. |
| Author(s): | So. Roshani, Sa. Roshani |
| File Type: | Journal Paper |
| Issue: | Volume: 32 Number: 11 Year: 2017 |
| Download Link: | Click here to download PDF File Size: 1620 KB |
| Title: | Radio Frequency Attenuation by Rocket Plume From Ground Study to In-flight Prediction |
| Abstract: | Radio frequency communication between the space launcher and the mission control are unusually disturbed by the exhaust plume present in rocket engines. This paper presents the computation of radio wave propagation through the exhaust plume. Thus, frequencydomain finite element method and time-domain discontinuous Galerkin method are implemented for computations in case of a ground domain experiments. Numerical results compared to those obtained from ground experiment show good approximation of the propagation through the plasma over a wide frequency band. For the launcher in flight, an asymptotic method is proposed and has the advantage to give a fast evaluation of the scattering solution. In this case, the exhaust plume area is considered as a perfectly conducting trapezium whose parameters are extracted from the distribution of the plasma permittivity. Results related to the asymptotic method appear to be in good agreement with results based on the full wave approaches. |
| Author(s): | E. Dieudonne, A. Kameni, L. Pichon, D. Monchaux |
| File Type: | Journal Paper |
| Issue: | Volume: 32 Number: 11 Year: 2017 |
| Download Link: | Click here to download PDF File Size: 2428 KB |