A new dual-polarized 3-D frequency-selective surface (FSS) with quasi-elliptic bandpass response is proposed by virtue of the square coaxial waveguide (SCW). By utilizing SCW as one propagation path in unit cell, two resonators can be generated intrinsically without introducing any extra structures. In addition, parallel-plate constructed sandwiching ABS frame between outer conductors adjacent SCWs will provide a second and create another resonator. With help these resonators, passband...

In this study, a nano-displacement measurement system is proposed and demonstrated both theoretically experimentally, which was based on modified Mach-Zehnder (M-Z) interferometer using two conjugated orbital angular momentum (OAM) beams. contrast to the previous M-Z-based OAM interferometer, reflection module inserted into reference arm instead of simple mirror. As result, effect transverse position-dependence phase-shift caused by dove prism can be clearly eliminated stable robust...

A novel substrate integrated waveguide (SIW) bandpass filter (BPF) with adjustable number of passbands based on assembled multimode resonant printed circuit boards (PCBs) is proposed in this brief, for the first time. Three independent PCBs perturbed TE <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">102</sub> and xmlns:xlink="http://www.w3.org/1999/xlink">201</sub> modes are designed to realize high-selective filtering response desired...

ABSTRACT This paper presents a novel compact balanced‐to‐single‐ended out‐of‐phase filtering power divide with continuously tunable center frequency and bandwidth. By introducing T‐shaped slot on the isosceles right triangle patch resonator to perturb TM 10 mode exploring varactors‐loaded stubs, new miniaturized is created. The proposed filter comprised three resonators connected by back‐to‐back varactors adjust bandwidth in between. studying electric field distribution of odd grounded...

The 2.5-dimensional closed loop is investigated to constitute a novel miniaturized frequency-selective surface (FSS) whose electric size of one unit cell as small 0.048 λ <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">0</sub> × . For miniaturization, two pairs orthogonal split square rings are connected in series by four vias array the FSS cell. Thus, this exhibits polarized insensitivity for different incident angles. An equivalent circuit...

A new dual-band bandpass filter (BPF) is designed and fabricated based on a pair of spherical dual-mode resonant cavities using 3-D printing technology. By elaborately introducing three-type metallic posts into each cavity to perturb the degenerated TM <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">101</sub> modes in reasonable way, coupling topology developed design accordingly. Owing cross-coupling paths topology, two transmission zeros (TZs)...

In this brief, a novel compact single circular patch dual-band (DB) filtering power divider (FPD) is proposed for the first time. design, modified TM <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">01</sub> resonance mode (i.e., ' mode) developed by introducing metallic via in center of patch, while four additional same vias are placed to control generated and xmlns:xlink="http://www.w3.org/1999/xlink">21</sub> mode. addition, vertical slot...

A novel compact dual-band balanced-to-balanced (BTB) filtering power divider (FPD) based on the circular microstrip patch resonator is presented, for first time in this brief. Firstly, order to elucidate its principle of operation, resonant property researched. After that, a prototype BTB FPD developed. It mainly constructed by two coupled resonators, impedance matching ports, and three pairs balanced ports. Its operating mechanism can be strictly illustrated field distributions concerned...

This article proposes a new design approach for filtering crossovers featuring wide-stopband and dual-band characteristics based on mixed substrate integrated waveguide (SIW) cavities. The degenerate orthogonal modes in multimode full-mode SIW (FMSIW) square cavities are fully exploited as the cross-unit of dual channels cross-transmission good isolation. By developing proper coupling topology between multiple quarter-mode (QMSIW) FMSIW cavity, compact crossover is presented with more than...

A novel frequency selective surface (FSS) has been designed based on 2.5‐dimensional (2.5D) closed loop for miniaturisation. Compared with the previous FSSs in literature, proposed FSS is smaller (0.048 λ 0 × 0.048 ) and shows almost same transmission coefficient different polarisations incident angles. prototype of fabricated measured. The results experiment show a consistency simulated ones.

In this brief, a new balanced bandpass filter based on equilateral triangular patch resonator (ETPR) is presented. By introducing rectangular slot in the middle of ETPR, TM <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">10</sub> mode can be controlled for miniaturization design and separated away from disturbed near passband decent performance. Furtherly, developed coupling topology, six adjacent slotted ETPRs are elaborately arranged to...

A novel substrate-integrated waveguide (SIW) filtering crossover based on 3-D assembly is proposed, for the first time. The degenerate orthogonality of TE102 mode and TE201 fully utilized to obtain good cross-transmission interchannel isolation. In addition, four resonant printed circuit boards (PCBs) are spliced assembled like building blocks, successfully achieving energy transmission at different heights. combined application <inline-formula xmlns:mml="http://www.w3.org/1998/Math/MathML"...

A new class of 3-D integrated multiband bandpass filters (BPFs) based on substrate waveguide (SIW) technology is presented in this work, for the first time. Split-type dual-extended doublet (SDED) coupling topologies are developed to propose these BPFs with a desired response by LEGO-style assembly planar SIW resonant-mode blocks. These design schemes offer attractive and promising advantages regard compact size, low cost, flexible expandable topology, as well integration high-density...

In this brief, new dual-band and triple-band filtering power dividers (FPDs) with sharp frequency selectivity are proposed. Firstly, the FPD is developed mainly composed of a quarter-wavelength three-line parallel coupled line structure, five transmission lines, pair short-ended lines. Based on specific two extra lines imported, further attained. Multiple zeros generated successfully in above designs, thus leading to skirt selectivity. For only single isolated resistor arranged between side...

Abstract This development starts from a simplified (fuzzy) formulation and continues with derivations leading to desired CAD formulas of practical circuit components. Because the simplification at beginning, derivation formula can be rigorous but remain simple same time. Simplification is applied only once still, beginning derivation. Therefore error resulted not larger than that regular methods, analytical or numerical (average error: 2%). Examples insightful are given in this paper. For...

A dual-band three-dimensional (3-D) frequency selective surface (FSS) is presented for dual-polarized applications in this letter. The proposed 3-D FSS based on simple square coaxial waveguides and employs via holes, H-shaped slots, centered gaps a single unit cell introducing more resonances couplings, leading to multiple transmission zeros/poles. As result, two passbands can be obtained, each passband contains poles. Meanwhile, sharp roll-off rejection of achieved by the existence zeros....

In this letter, a Yagi-Uda antenna with load and additional reflector is proposed to achieve strong uniform magnetic field distribution within the area for near-field ultrahigh-frequency radio frequency identification (RFID). This composed of one driven dipole emit electromagnetic (EM) wave, several directors direct EM wave desired area, element at end director array absorb two reflectors both ends reflect wave. The can generate meanwhile keeping strength outside relatively small. A...

This brief proposes a dual-band filtering power divider (FPD) based on single substrate integrated waveguide (SIW) cavity with complementary split-ring resonators (CSRRs). The first passband is obtained by employing the metallic vias to control perturbed TE <sub xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">1</sub> xmlns:xlink="http://www.w3.org/1999/xlink">01</sub> ' and xmlns:xlink="http://www.w3.org/1999/xlink">02</sub> '-modes, while second...

This article proposes a novel wideband three-way filtering power divider (FPD) based on one single multimode patch resonator (MPR). Firstly, by researching the unique trilateral symmetry properties of equilateral triangle (ETPR) modes, TM11 and TM30 resonant modes have been exploited to establish division. Then metallic vias slots perturbations are introduced flexibly control mode frequencies realize assumed two-order response. Ultimately, resistors-grounded isolation network is developed...

A stably acquiring and accurately demodulating interferogram is crucial for the interferometer to achieve ultra-high precision sensitivity measurements. In this study, a robust orbital angular momentum (OAM) beams-based Fizeau proposed experimentally demonstrated, which more compact stable than OAM interferometers with other structures due common optical path characteristic. accordance such an interferometric scheme, phase-demodulation method operated in domain of complex spectrum also...

A power/ground plane pair is proposed using a novel planar electromagnetic bandgap (EBG) structure for isolating the power-to-ground noise (PGN) in high-speed circuits. Each unit cell of EBG designed by etching slots "C" shape on power while maintaining ground solid. Without cascading hybrid periodic structures, it shows an efficient mitigation PGN within ultra-wideband frequency range 0.25-2.18 GHz. In this paper, equivalent circuit model and cavity mode analysis are given to quickly...

A novel ultrawideband and miniaturized common-mode filter (CMF) is proposed for suppressing the CM noise based on dual vertical coupling paths. In CMF, a modified quarter-wavelength transmission line resonator half-wavelength are utilized to introduce three zeros. Moreover, another zero produced by path coupling. An ultrawide stopband achieved four Subsequently, equivalent circuit models have been established give physical insight into CMF operating mechanism, design procedures also...

In this paper, two novel bandpass three-dimensional frequency selective surfaces (3-D FSSs) based on the waveguide structure are proposed. The first 3-D FSS is composed of a square metallic with dumbbell slots which loaded in all walls. This design can form slot resonators and introduce passband below cutoff waveguide. second one constituted coaxial unit cells, provides parallel plate paths. By interaction between propagation paths, quasi-elliptic response takes place improves selectivity....

This article presents a novel circuit topology for ultra-wideband common-mode filter (CMF). The (CM) noise suppression stopband is enhanced by the capacitance coupling between two dual-mode LC tanks. Moreover, RLC equalizers are integrated with proposed CMF to improve signal integrity of differential mode. Finally, chips fabricated GaAs process low-cost massive industry applications. For chip equalizers, measured differential-mode insertion losses kept nearly constant at around -5 dB from dc...