This letter presents a second-order tri-band bandpass filter (BPF) designed using tri-section stepped-impedance resonators (TSSIRs). The impedance ratios of the TSSIRs were computed formulas expressed as functions passband center frequencies, which are located at 1.57, 2.45, and 3.5 GHz. A cross-coupled configuration was arranged to sharpen skirts. newly BPF verified by circuit implementation very good agreement between simulated measured results observed.

A novel design is described for a circularly polarized square slot antenna (CPSSA). Circular polarization (CP) operations can be attained using lightening-shaped feedline protruded from the signal line of feeding coplanar waveguide (CPW). The CP bandwidth significantly enhanced by implanting pair inverted-L grounded strips into and adjusting dimensions feedline, whereas impedance greatly enlarged through tuning embedded vertical horizontal stubs. designed was measured to exhibit as high 48.8%.

ABSTRACT The contribution of this work is to propose an ultra‐miniaturised substrate‐integrated coaxial cavity (SICC) and its applications in bandpass filter (BPF) design. proposed SICC comprises two dielectric substrates with three metal layers. top bottom layers form the cavity's broadside walls. middle a circular patch that shorts wall through blind‐via ring. also connects bottom‐wall embedded split CPW ring blind vias. In conjunction top/bottom walls ring, provides significant loading...

A new tri-band microstrip bandpass filter (BPF) is designed to produce three passbands at the commercially practical frequencies through a single piece of circuitry. The basic component used build proposed consists two quarter-wavelength ( <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$lambda/$</tex> 4) stepped-impedance resonators (SIRs). One 4 SIRs operate 1.57 GHz and 5.25 GHz, other 2.45 GHz. feed positions for are carefully located have...

A new fourth-order balanced dual-band band-pass filter (BPF) designed using four coupled bi-section half-wavelength (¿/2) stepped-impedance resonators (SIRs) is presented. To obtain the required differential-mode (DM) operation with suppressed common-mode (CM) transmission, SIRs were to have same odd-mode, but different even-mode, resonant frequencies. For that purpose, two inner loaded at center T-shaped open stubs of dimensions so their even-mode frequencies are shifted away from those...

This letter presents a new 5 GHz band-notched balanced ultra-wideband (UWB) bandpass filter (BPF), which is designed using stepped-impedance slotline multi-mode resonator (MMR). To obtain favorable uniform differential-mode (DM) response, microstrip-to-slotline transition used as the signal-feeding structure and first three resonant modes of MMR are located in UWB passband. Common-mode (CM) signal rejection achieved by deploying such way that quarter-wavelength resonances occurring near...

A novel design of a circularly polarized annular-ring slot antenna is discussed. The circular polarization attained through newly proposed double-bent microstripline that feeds the at two different positions. Several structural parameters were experimentally studied with care to establish procedure, which was subsequently drawn into flow chart. Validation carried out using antennas designed 3.5 and 1.59 GHz. measured 3-dB axial-ratio bandwidth (ARBW) for former 10.5% latter, 10.0%, larger...

This letter aims at miniaturizing an annular-ring slot antenna that is suitable for the 2.4/5-GHz dual-band operations. The miniaturization purpose was achieved by embedding in center patch of a pair slots to excite three resonant modes. band first excited mode lowered from unperturbed antenna, whereas those second and third modes were combined form wide upper operating appropriately adjusting dimensions embedded slots. proposed proves have very similar copolarization radiation patterns its...

This paper presents a second-order dual-band balanced bandpass filter (BPF) designed using bi-section quarter-wavelength (λ/4) stepped-impedance resonators (SIRs) and folded feed lines. The first two modes of the λ/4 SIRs are to resonate in designated 2.4- 5.2-GHz WLAN bands. High-impedance transmission-line sections inserted series with lines improve overall impedance matching at input/output ports, so that signal transmission can be enhanced. In addition, properly arranged form an...

This paper presents the design of a dual-band filter and diplexer using an extremely miniaturized substrate-integrated coaxial cavity (SICC) structure. The presented can function as front-end circuit block connected to 5G antennae, enabling dual-passband operation for applications. is designed use in communication systems, positioned after antennae facilitate switching transmitting (Tx) receiving (Rx) signals between Tx Rx terminals. main contribution this work development highly (DBF)...

This paper presents a complete analysis for system of Iinear, homogeneous, and isotropic dielectric posts in rectangular waveguide. These are assumed uniform along the narrow side waveguide, but otherwise arbitrary cross section thickness. The scattering impedance matrices describing effect on dominant waveguide mode derived. latter is then realized as two-port T-network. A moment procedure devised applied to set test problems with wide variety post configurations compute parameters...

A balanced wideband (WB) planar inverted-F antenna (PIFA) integrated with a WB bandpass filter (BPF) is presented in this letter. Due to circuit symmetry, the patch PIFA does not need grounded via hole for its shorting strip, rendering easy fabricate. The BPF that added front of serves improve differential-mode (DM) passband selectivity and upper stopband rejection meanwhile increase common-mode (CM) rejection. In terms defined by ratio 20-dB bandwidth 3-dB DM return-loss response, simulated...

A sub-6-GHz four-element multi-input multi-output (MIMO) slot antenna system was proposed in this study for fifth-generation (5G) tablet computers, where each element constructed using a structure. To effectively use the available space and maximize screen, we have deployed MIMO on left side-edge frame of tablet. The measuring 37.2 × 7 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> consists two identical 13.6 dual-slot-antenna units...

This paper proposes a two-element multi-input multi-output (MIMO) open-slot antenna implemented on the display ground plane of laptop computer for eight-band long-term evolution/wireless wide-area network operations. The metal surroundings antennas have been well integrated as part radiation structure. In single-element antenna, nearby hinge slot (which is bounded by two planes and hinges) relatively large compared with open itself acts good radiator. MIMO consisting elements, T embedded in...

A mixed-potential electric field integral equation is formulated and applied in conjunction with the method of moments to analyze a transmission-line system consisting multiple conducting strips arbitrary cross section embedded stratified medium or without top and/or bottom ground planes. Each layer possibly uniaxially anisotropic, its optical axis perpendicular dielectric interfaces. Computed dispersion curves modal currents are presented and, when possible, compared data available...

A simple numerical procedure for finding the loci of TE and TM leaky wave poles as frequency or thickness slab varies is presented. These provide important information when integration path Sommerfeld integral grounded dielectric problem deformed into improper sheet Riemann surface. The accuracy has been checked extensively against contour plots separate expressions electric flux density cases.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">&gt;</ETX>

A novel design for a UMTS diplexer using dual-mode rectangular stripline-ring resonators is proposed. The comprises two parallel-oriented stripline-rings and connecting line between them. degenerate-mode resonance used to form the diplexer&apos;s Tx- Rx-bands, method improve isolation also proposed in this circuit design.

This study presents a new band-notched ultra-wideband (UWB) bandpass filter (BPF) that is designed using structure-shared multi-mode resonator (MMR). The MMR formed by combining two quarter-wavelength (λ/4) tri-section stepped-impedance resonators (TSSIRs) in proper fashion to exhibit both λ/4 and half-wavelength (λ/2) types of resonance. With the first resonant frequencies inherent TSSIR, parasitic λ/2 SIR coupling peaks input/output interdigital parallel-coupled lines properly located UWB...

This paper presents a compact dual-band four-element multiple-input multiple-output (MIMO) antenna system for the fifth-generation (5G) laptops with large display-to-body ratio. The four elements, each being three-dimensional inverted-F (IFA) of same structure and size, are constructed on T-cross-sectioned substrate, vertical part which is embedded in 1 × 64 mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</sup> clearance area created from...

This communication presents a novel design of differentially fed wideband circularly polarized (CP) slot antenna. The CP antenna consists two opposite-fed C-shaped radiating patches and stub-loaded corner-truncated rectangular slot. With the designed to be antisymmetric with respect bisection plane oppositely by microstrip lines, good differential-mode (DM) performance was obtained. On other hand, radiations contributed corresponding parts will destructive when in common-mode (CM) operation....

Abstract In this paper, two irises are orthogonally connected to a slot‐ring antenna via short‐length slits with each of the loaded by pin diode. This can be switched back and forth between right‐hand left‐hand circular polarization turning on/off diodes. The slot ring is excited slotline. conformability slotline an SMA accomplished inserting CPW‐to‐slotline transition them. An experimental built on low‐cost FR4 substrate in order validate design. antenna's uniplanar architecture its...

A dual-band high-temperature superconducting (HTS) bandpass filter (BPF) is proposed for wireless local area network applications. Using quarter-wavelength stepped-impedance resonators, the designed can be miniaturized and shows a response. The simulation results show feature of two passbands at 2.4 5.2 GHz, each with minimum in-band insertion loss about 0.02 dB. was made out patterned double-sided deposited YBa <sub xmlns:mml="http://www.w3.org/1998/Math/MathML"...

A circular slot antenna fed by a coplanar waveguide (CPW) is proposed for dual-band operations. Dual frequency bands that cover the 2.4 GHz (2400–2484 MHz) and 5 (5150–5825 were obtained embedding pair of slits in back-patch printed on backside substrate concentric with slot. This design resulted broadside far-field patterns low cross-polarisation levels both small size 40×40 mm ground plane regarded as part structure.

In this research, the cogging torque of a newly designed single-phase brushless DC motor used in CD-ROM application is investigated. A finite element method employed to numerically analyze magnetic field distribution inside motor, which three-dimensional mesh constructed. The due coupling between rotor and stator estimated based upon virtual work concept. It proposed paper that salient pole be divided into several regions azimuthal direction. By properly choosing radii for these regions, can...