This letter presents a novel microwave-based rotation sensor having wide dynamic range to detect and measure the angular displacement in terms of change resonant frequency. The proposed is based on microstrip technology, where rotor comprised complementary split-ring resonator (CSRR) placed ground plane line free rotate around its axis. mechanical CSRR determines cross coupling between CSRR, thus changing overall inductance. planar unloaded microwave sensor, working ISM band 5.8 GHz, quite...

This article presents a technique based on modified complementary split-ring resonator (CSRR) to detect angular displacement and direction of rotation with high resolution sensitivity over wide dynamic range. The proposed microwave planar sensor takes advantage the asymmetry geometry measures angle in terms change relative phase reflection coefficients. consists movable CSRR (the rotor) microstrip line circular defect ground plane stator). By selecting substrate material rotor thickness, can...

This letter presents a novel technique for synthesis of coupled-resonator filters with inter-resonator couplings varying linearly frequency. The values non-zero elements the coupling matrix are found by solving nonlinear least squares problem involving eigenvalues pencils derived from and reference zeros poles scattering parameters. proposed method was verified numerical tests carried out various schemes including triplets quadruplets which frequency-dependent to produce an extra zero.

This article presents a novel sensor for detecting and measuring angular rotation proximity, intended rapid prototyping machines. The is based on complementary split-ring resonator (CSRR) driven by conductor-backed coplanar waveguide (CBCPW). has planar topology, which makes it simple cost-effective to produce accurate in both physical quantities. two components, rotor stator: the first of these (the CSRR) can rotate around its axis translate along plane normal ground CBCPW. A detailed...

This paper proposes a new sparse matrix storage format which allows an efficient implementation of vector product on Fermi Graphics Processing Unit (GPU).Unlike previous formats it has both low memory footprint and good throughput.The format, we call Sliced ELLR-T been designed specifically for accelerating the iterative solution large complex-valued system linear equations arising in computational electromagnetics.Numerical tests have shown that performance reaches 69 GFLOPS complex single...

This paper presents an efficient technique for fast generation of sparse systems linear equations arising in computational electromagnetics a finite element method using higher order elements.The proposed approach employs graphics processing unit (GPU) both numerical integration and matrix assembly.The performance results obtained on test platform consisting Fermi GPU (1x Tesla C2075) CPU (2x twelve-core Opterons), indicate that the implementation allows one to achieve speedups by factor 81...

This letter presents an application of a recently developed coupling matrix synthesis technique to design coupled-resonator filters with dispersive inter-resonator couplings. is used novel coupled-cavity bandpass filter. Measurements validate the and confirm effectiveness method. The filter four-pole generalized Chebyshev three transmission zeros. Resonators are arranged in quadruplet configuration employ single cross produce extra zero comparison classical approaches. Frequency-dependent...

This letter presents the design of a microwave bandpass filter with frequency-dependent coupling implemented in substrate integrated waveguide (SIW) technology. The proposed implements four-pole generalized Chebyshev filtering function two transmission zeros. Resonators are arranged an extended box configuration dispersive on main signal path, which produces extra zero comparison to classical approaches. is as shorted stub additional septum made from via-holes. Such modification allows...

SUMMARY This paper presents techniques for generating very large finite‐element matrices on a multicore workstation equipped with several graphics processing units (GPUs). To overcome the low memory size limitation of GPUs, and at same time to accelerate generation process, we propose generate sparse linear systems arising in analysis an iterative manner GPUs use accelerators concurrently CPUs performing collection addition matrix fragments using fast multithreaded procedure. The scheduling...

There are many steps in the design of a microwave filter: mathematically describing filter characteristics, representing circuit as network lumped elements or coupling matrix, implementing distributed elements, finding initial dimensions physical structure, and carrying out numerical tuning using electromagnetic (EM) simulators. The whole process is painstaking time-consuming, it requires great deal engineering expertise. Microwave filters extremely complex geometric structures, their simple...

A novel, general circuit-level description of coupled-resonator microwave filters is introduced in this article. Unlike well-established coupling-matrix models based on frequency-invariant couplings or linear frequency-variant (LFVCs), a model with arbitrary reactive coupling (AFVC) networks proposed. The engineered formulation more than prior-art ones—with the only restriction that network reactive-type two-port circuit—and can be treated as an extension previous synthesis since constant...

This work presents the design techniques to synthesize a class of compact inline quasi-elliptic-type waveguide cavity bandpass filters based on novel nonlinear frequency-variant couplings (NFVCs). These highly dispersive (FVCs) are realized by means pair partial-height posts that placed at junctions between every two resonators. Each NFVC produces transmission pole in independently adjustable zeros (TZs). Although is added overall filtering function augment its order, TZs can be each side...

In this paper, a new fast technique of passivity enforcement nonpassive rational model is introduced. The disturbs poles the to restore in such way that frequency response device being modeled preserved. procedure defined as an optimization routine with gradients cost function evaluated using theory matrix perturbation. can be based either on passive (electromagnetic simulations, measurements) or (surrogate models) data. second case, proposed lead parameterized SPICE networks. Some advanced...

The letter discusses a fast implementation of the conjugate gradient iterative method with E-field multilevel preconditioner applied to solving real symmetric and sparse systems obtained vector finite element method. In order accelerate computations, graphics processing unit (GPU) was used significant speed-up (2.61 fold) achieved comparing central (CPU) based approach. These results indicate that performance electromagnetic simulations can be significantly improved thereby enabling full...

In this letter, we propose a lossy three-pole Chebyshev filter centered at 5.15 GHz, based on the substrate integrated waveguide (SIW) with scattering characteristics shifted down by 5.68 dB. The is composed of three directly coupled SIW cavities couplings between nonadjacent resonators. These additional are realized using mixed slot and microstrip lines connected metal electrode leadless face (MELF) resistors. was fabricated standard printed circuit board (PCB) process, good agreement...

This paper reports a novel synthesis method for microwave bandpass filters with resonant source-load connection. In effect, network realizing N+1 transmission zeros (where N is the number of reflection zeros) obtained. The based on prototype transversal coupling matrix (N+2, N+2) source and load connected by circuit formed capacitor in parallel frequency-invariant susceptance. To complement proposed technique, reconfiguring as more practical cross-coupled outlined. technique quickly...

In this paper, a versatile technique for mesh deformation is discussed, targeted at the electromagnetic (EM) field simulation of high-frequency devices using 3-D finite element method (FEM). The approach proposed applies linear elasticity model to compute displacements internal nodes in when structure geometry changed. compared with an alternative based on harmonic radial basis functions. It shown that numerical effort needed solve mechanical problem small EM simulation. verified examples...

This article introduces shape deformation as a new approach to the computer-aided design (CAD) of high-frequency components. We show that geometry opens up possibilities and offers additional degrees freedom in 3-D modeling microwave structures. Such flexibility is highly desirable if full potential additive manufacturing (AM) be exploited fabrication RF devices. The use techniques components allows attainment improved electrical parameters, such high-quality factors for cavity resonators...

In this study, a novel low-cost polishing method for internal surface roughness reduction of additively manufactured components, developed waveguide (WG) circuits operating in the millimeter frequency range is proposed. WG components fabricated using powder bed fusion (PBF) generally feature ten to fifty microns, which influences increase roughness-related conductor power losses having major effect on electrical performance all-metal WGs. To improve and decrease PBF, glass microbeads as an...

A new, quickly converging, technique for the synthesis of extended coupling matrix Chebyshev filtering function general kind is presented. The method formulates as a least squares problem involving eigenvalues N+2 transversal and its principal submatrices.

This paper attempts to develop a new automated multipoint model-order reduction (MOR) technique, based on matching moments of the system input-output function, which would be suited for fast and accurate computation scattering parameters electromagnetic (EM) systems over wide frequency band. To this end, two questions are addressed. Firstly, cost wideband reduced model generation is optimized by automating greedy MOR scheme. achieved introducing dual local-global convergence scheme, applies...

This article reports the design of coupled-resonator-based microwave dispersive delay structures (DDSs) with arbitrary asymmetric-type group response. The process exploits a coupling matrix representation DDS circuit as network resonators frequency-variant couplings (FVCs). response is shaped using complex transmission zeros (TZs) created by cross-couplings. We also present an optimization-based synthesis procedure for characteristic polynomials prescribed profile. Thus, when compared...