A novel quasi-Yagi antenna is proposed for millimeter-wave (mmWave) 5G cellular handsets operating in the 28 GHz band. The designed to be compact through modification of planar folded dipole topology so that it can mounted inside a mobile terminal. vertically stacked structure utilizing multilayer printed circuit board (PCB) and via holes applied minimize lateral width while maintaining characteristics antenna. single yields <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML"...

This paper discusses a new design approach that uses hybrid power combining rectenna array in radio frequency (RF) energy transfer systems to receive more wide incident angle range. A beam-forming matrix and dc management network (PMN) are introduced the combining. The normalized output of proposed is compared conventional methods with regard wave angle, average received also calculated compared. To experimentally verify performance, four suspended patch antennas attached RF receiving...

Minimizing the size of mobile antennas is necessary for integrating components inside a device. Wideband and multiband are also required to cover various 5G communication frequency spectra. This article presents vertically stacked dipole antenna array operating in 28/38 GHz dual-band. The proposed small satisfies need wide bandwidth form dual band. structure has symmetric 38 band radiators positioned above below multilayer substrate, 28 radiator on middle plane, providing dual-band with...

Abstract This paper presents a wide-angle scanning phased array antenna using high gain pattern reconfigurable (PRA) elements. Using PRA elements is an attractive solution for antennas because the range can be divided into several subspaces. To achieve desired performance, some characteristics of element such as number switching modes, tilt angle, and maximum half-power beamwidth (HPBW) are required. We analyzed required according to target spacing, presented design guideline antennas. In...

In this paper, we first demonstrate a metasurface that offers spectral filter performances not yet reported for single-layer because of the limited number geometric parameters. The configuration is determined by conformational space annealing algorithm, which key toward being able to design desired frequency, bandwidth, and response type various wireless communication devices, including fifth-generation (5G) millimeter-wave devices. As proof-of-concept, fabricate very thin (50 μm) combined...

The fare payment system for public transportation has developed from coins, paper tickets, magnetic strips, and pre-paid cards to new technologies such as Radio-Frequency Identification (RFID) Near Field Communication (NFC). Most systems are a fusion of NFC mobile payment. As the latest system, studies on gate-free technology without tag action in progress. several advantages, improving user convenience, eliminating congestion, preventing spread infectious diseases. We introduce using...

Visual perception is a fundamental capability necessary for intelligent mobile robots to interact properly and safely with the humans in real-world. Recently, world has seen revolutionary advances deep learning led some incredible breakthroughs vision technology. However, research integrating diverse visual methods into robotic systems still its infancy lacks validation real-world scenarios. In this paper, we present framework an robot. Based on robot operating system middleware, our...

We propose dual-band filters made from a single-layer metasurface for operating on the 28 and 39 GHz bands in mm-wave fifth generation (5G) communication systems. use conformational space annealing method, global optimization technique, test usefulness of metasurfaces through design, fabrication, measurement with 2916 square-shaped pixels per unit cell defined single layer. Each pixel has only two states: either filled metal or free metal. were able to obtain transmissive capable performing...

This paper proposed a high gain spherical dielectric resonator antenna (DRA) operating on higher-order mode excited by microstrip patch. A patch was used to excite TEn01 sphere. The sphere operates as DRA with gain. Impedance matching method for conventional could be applied the antenna. Size minimization excitation also described this paper. prototype TE301 at 5.8 GHz fabricated ceramic material, which constant is 13, and showed peak of 9.03 dBi.

A hybrid electromagnetic (EM) and light energy harvester is proposed for autonomous IoT sensor. The comprised of dipole rectenna in 915MHz ISM band flexible photovoltaic film. film integrated on metal surface at a certain distance from antenna, which plays role as reflector. This integration has little effect antenna performance increase gain. prototype sensor with fabricated. obtains DC power both sources can be used

This paper presents a pattern reconfigurable dual-polarized dipole antenna with staggered parasitic elements operating in 3.5 GHz band. The proposed is designed by assembling two linearly polarized antennas to be orthogonally polarized, and each includes single element. A circuit including varactor inserted into element, the current phase of element changes according capacitance varactor. Each has beam steering range about ±30° E-plane, beamwidth gain are maintained uniformly regardless...

Analyzing antenna coupling is valuable in solving various problems of multi-antenna systems. Through existing studies based on the reaction theorem and infinitesimal dipole modeling (IDM), mutual admittance can be intuitively efficiently calculated. Extending previous IDM, we propose a method for analyzing between antennas that are located nonplanar skew positions. There two main ideas this paper. The first IDM extraction using segmented grid an computer-aided design (CAD). Using...

Novel low-profile antenna is proposed for mm-Wave 5G mobile terminals at 28 GHz band. The presented topology a modified folded dipole which has vertically stacked structure using multi-layer minimizing the width maintaining characteristics of planar dipole. Through simulation and measurement results, determined to be applicable terminals.

This article presents a maximum efficiency point tracking (MEPT) scheme for multiple receivers and loosely coupled wireless power charging (WPC) system with mutual inductance method. In general, the WPC should satisfy requirements of constant output voltage highest possible according to sensitive variation environments. To this end, state-of-the-art MEPT has been studied in work. Additionally, one advantages is ability charge devices simultaneously. However, most studies have focused on...

The design of a half-elliptic hoof antenna for femto-cell network in multi-input multioutput system is proposed. proposed incorporates surfaces, and has multiresonance frequencies its TM modes. the resonates with two main current paths, resonant frequency each mode can be calculated using Mathieu function. Moreover, an additional resonator inserted between patch ground to obtain resonance wider bandwidth on high band. covers bands from 880 960 MHz 1710 2170 Global System Mobile...

The ability to leverage shared behaviors between tasks is critical for sample-efficient multi-task reinforcement learning (MTRL). While prior methods have primarily explored parameter and data sharing, direct behavior-sharing has been limited task families requiring similar behaviors. Our goal extend the efficacy of more general that could require a mix shareable conflicting key insight an agent's behavior across can be used mutually beneficial exploration. To this end, we propose simple...

This article presents a new antenna structure using truncated ground walls (TGWs) for gain enhancement implementation. The proposed with TGWs is analyzed by an array of magnetic currents where the edge slot radiation included. Also, at slots operated TGW, resulting in further gain. To verify TGWs, module balun feed network was implemented and tested. fabricated 10.1 dBi, overall volume 50 × 6 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...

Semi-supervised learning and continuous are fundamental paradigms for human-level intelligence. To deal with real-world problems where labels rarely given the opportunity to access same data is limited, it necessary apply these two in a joined fashion. In this paper, we propose Label Propagation Adaptive Resonance Theory (LPART) semi-supervised learning. LPART uses an online label propagation mechanism perform classification gradually improves its accuracy as observed accumulates. We...

We propose an approach to elevate the signal-to-noise ratio (SNR) in a microwave electric field sensor system with polarization maintaining fiber (PMF) probe incorporated electro-optic (EO) crystal. The optimal parameters were determined obtain best SNR based on suggested approach, which was validated experimentally. Using newly fabricated PMF close design, improvement of 2.5 dB compared our previous successfully demonstrated measurements.

We propose field-calibrated electrooptic probes that are designed for millimeter-wave (mm-wave) 5G phased array antenna and Ka-band rectangular waveguide. A method to enhance the probes' sensitivity practical limit realization presented. The fabricated specifically minute enough fit inside a standard mm-wave waveguide section calibration in minimally invasive way. proposed is validated by analyzing field invasiveness through simulation. Using calibrated probe associated with heterodyning...

We propose a framework to learn semantics from raw audio signals using two types of representations, encoding contextual and phonetic information respectively. Specifically, we introduce speech-to-unit processing pipeline that captures representations with different time resolutions. For the language model, adopt dual-channel architecture incorporate both representation. also present new training objectives, masked context reconstruction prediction, push models effectively. Experiments on...

We propose a framework to learn semantics from raw audio signals using two types of representations, encoding contextual and phonetic information respectively. Specifically, we introduce speech-to-unit processing pipeline that captures representations with different time resolutions. For the language model, adopt dual-channel architecture incorporate both representation. also present new training objectives, masked context reconstruction prediction, push models effectively. Experiments on...