A wideband low-profile connected rectangular ring dielectric resonator (DR) antenna (DRA) array is presented for millimeter-wave (mmWave) applications. It consists of four DRA elements. The elements are excited by microstrip feedlines through slots on the ground plane. slot mode, <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink"> <tex-math notation="LaTeX">${\mathrm {TE}}^{\text {y}}_{1\delta 1}$ </tex-math></inline-formula> and...

A 1-D wideband phased array of the rectangular ring dielectric resonator antenna (RRDRA) is presented for millimeter-wave (mmWave) applications. By using characteristic mode analysis, it found that unwanted higher order (HOM) RRDRA results in severe gain degradation and high cross-polarization when scans. To remedy problem, each loaded with a pair silver strips. They can suppress HOM enable good scanning performance wide frequency range. demonstrate idea, <inline-formula...

In this communication, conformal concave and convex bent dielectric resonator antennas (DRAs) with the curving ground plane are proposed investigated. Their resonant frequencies field distributions theoretically analyzed through eigenmode method single-mode approximation approximate models containing various boundary conditions. This shows good accuracy for both DRAs. Then, radiation performance of DRAs is studied compared that rectangular microstrip patch antennas. Bent exhibit superior or...

A novel hybrid antenna for simultaneous RF energy harvesting (RF-EH) and dedicated wireless power transfer (WPT) is proposed. The consists of a multiband dual-polarized omnidirectional element (covering GSM-1800, UMTS-2100, ISM-2400/5800, 5G-3500, local area network (WLAN) bands) 2.4 GHz high-gain directional patch array element. In the WPT band (ISM-2400), beams locate at null beams, pair spatially complementary obtained. are capable capturing ambient from low-elevation space low-power...

This communication presents a method of designing filtering metasurface (MTS) antennas, which is to excite the candidate in-band modes and suppress out-of-band interference ones. The are selected depending on expected radiation patterns operating band excited by choosing reasonable feeding structure. suppression achieved controlling modal currents with aid characteristic mode analysis (CMA). As result, MTS works as radiator filter simultaneously. A <inline-formula...

Geometry-induced resonant modes with intrinsic broad beam coverage are synthesized within step-shaped dielectric resonator antennas (DRAs). Following the idea of mode fusion, a inherits and combines modal features from several conventional ones regular DRAs. Superior flexibility design freedom in shaping thus obtained, leading to 3 dB beamwidth exceeding 200° both main planes. To form such broad-beam mode, three higher-order rectangular DRAs chosen merged. Their radiation patterns have fine...

A wristwatch-style wearable dielectric resonator antenna (DRA) is proposed for the 2.45-GHz ISM band and sub-6 GHz 5G NR bands around 2.5 GHz, such as commercial China Mobile Communications Corporation. The designed applications on forearms ankles. Practical concerns, including aligning method, platform size, specific absorption rate, user effects are investigated. Coplanar feeding structure applied alignment isolation. Analysis of watchband-like substrate highlighted to avoid performance...

A dielectic resonator antenna (DRA) with simple configurations but an ultrabroad beam is proposed by combining the characteristic modes (CMs) from dielectric block and ground. To accurately identify these CMs, effective design methodology based on surface integral equation-based substructure mode analysis developed. Compared to traditional CM-based DRA approach, this new method provides much more useful modal information eliminating spurious mixing. The wide-beam then designed selecting a...

Ground effects on arc-shaped conformal dielectric resonator antennas (DRAs) working in the TE <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">11δ</sub> <sup xmlns:xlink="http://www.w3.org/1999/xlink">z</sup> mode are investigated and utilized to attain various radiation performances. Manipulation of directivity patterns achieved with help three-dimensional curved metal ground. The backlobe, beamwidth, broadside gain, backscattering,...

The homogenization theory for stacked dielectric resonator antennas (DRAs) on planar and curved ground planes is investigated. commonly used static capacitance models are reevaluated more comprehensively to reveal analyze their deficiencies. For improvement, the effective medium introduced provide superior empirical equations. Furthermore, a resonance-based methodology with explicit physical intension developed. All presented methods tested sets of DRA samples where layer thickness,...

Microwave photonic mixing can realize the frequency conversion of microwave signals in optical domain, breaking through bandwidth bottleneck and electromagnetic interference problems traditional methods. In background hybrid macro-micro cellular system, a wideband, large dynamic range reconfigurable mixer is proposed, theoretically analyzed experimentally demonstrated this paper. By adjusting modulator bias voltages matching proper digital domain operations, with functions including...

Since the probe coupling for cavity filters is unsuitable ceramic-filled filters, a novel capacitive cross-coupling structure proposed to improve stopband suppression by introducing transmission zeros. This implemented first etching window on silver-plated layer ceramic surface between two resonant cavities and then placing an isolated metal strip in window. enjoys high design freedom. Thus, coefficient readily adjusted. Moreover, has advantages of compact size simple fabrication tuning...

Various conventional and novel fixing strategies for dielectric resonator antennas (DRAs) in K band beyond are presented investigated. Their effects on DRAs studied depth explained theoretically through the perturbation theory basic principles of DRAs. Multifunctional fixtures which achieve different antenna performance then proposed discussed. mechanisms offering flexible bandwidth, miniaturization, frequency diversity, low cross polarization, circular polarization explained. In practical...

A composite approach is proposed to design a miniaturized dual-polarized antenna with high gain for wireless power transfer and radio frequency identification. The compact has small ground plane low profile. It consists of patterned driven patch, an air substrate, slotted ground, feeding parasitic patches. current distribution on it elaborately tailored fulfill miniaturization enhancement simultaneously. multipolar analysis method applied guide clarify the process. overall size can be...

A broadband endfire dielectric resonator antenna (DRA) is proposed based on three synthesized magnetoelectric resonances. These resonant modes have distinct features compared with the classical ones in regular DRAs. Field analysis and Cartesian multipole extraction are conducted to characterize guide design. By adjusting electric magnetic modal multipoles, bandwidth front-to-back ratio (FBR) enhanced. Moreover, contribution from multifunction feed ground plane also investigated. The DRA...

Compact arc-shaped conformal dielectric resonator antennas (DRAs) loaded by metal plates and high-dielectric-constant (HiK) patches are investigated. Their miniaturizing principles analyzed from different aspects. Closed-form expressions derived to characterize the function of ground in size reduction. Difference between conventional flat one is discussed. As lateral loading, its influence on radiation patterns utilized acquire additional function. Next, replace metallic structure, HiK used...

In large antenna servo control systems, Linear Quadratic Gaussian (LQG) controller is superior to the proportional integral (PI) in terms of stability, rapidity and wind disturbance suppression. However, there still no deterministic method design weight matrixes that affect performance LQG controller. To solve this problem, a based on artificial bee colony (ABC) algorithm proposed, which aims at optimizing close-loop system transient response performance. Global searching local are conducted...

This paper essentially focuses on parameter estimation of multiple wideband emitting sources with time-varying frequencies, such as two-dimensional (2-D) direction arrival (DOA) and signal sorting, a low-cost circular synthetic array (CSA) consisting only two rotating sensors. Our basic idea is to decompose the received data, which superimposition phase measurements from into separated groups separately estimate DOA associated each source. Motivated by joint estimation, we propose adopt...

A low cross-polarization slab waveguide filter for narrow-wall slotted array antenna with high gain horn is presented.In array, the horizontal polarization (HP) co-polarization, while vertical (VP) cross-polarization.Slotted widely used in radar system, and level cross reflects effect of antenna.Physical formulas were presented to give a concise explanation how this structure reduces cross-polarization.The only not enough system.On basis, 40-element 9.305GHz was designed simulated.The has...

Through symmetry breaking, an electric dipole moment is generated out of the fundamental magnetic mode dielectric resonator antennas (DRAs). Unidirectional radiation then achieved based on concept complementary by disturbing modal field distribution. The eigenmode method and Cartesian multipole analysis are utilized to analyze modified DRA quantitatively monitor amplitude phase moments. characteristic scattering spectrum also applied for further validation. It found that unidirectional...

This paper presents an analytic algorithm for estimating three-dimensional (3-D) localization of a single source with uniform circular array (UCA) interferometers. Fourier transforms are exploited to expand the phase distribution and problem is reformulated as equivalent spectrum manipulation problem. The 3-D parameters decoupled different spectrums in domain. Algebraic relations established between spectrums. sampling theorem ensures that minimum element number UCA five. Accuracy analysis...

A conformal dielectric resonator antenna (DRA) with a wide beam is proposed. This wide-beam enjoys widths of 178 and 142 degree in E- H- planes, respectively. The DRA derived from basic rectangular DRAs (RDRAs). Design procedure explained detail. Initially, the RDRA deformed direction its long edge so that new has wider also potential. Then, ground plane same extended to obtain broader beam. During deformation, width becomes decreasing gain. However, resonant frequency bandwidth vary little....