A compact 38 GHz multibeam antenna array is presented for fifth-generation applications. beamforming network featuring a substrate integrated waveguide (SIW) multifolded 4 × 8 Butler matrix constructed. Benefiting from multilayer structure, the highly and assembled underneath radiators to achieve compactness. The is, then, combined with an 10 SIW slot-coupled patch establish four steering beams along H-plane accomplish size reduction of 53.5% in its longitudinal direction. For demonstration,...

In this paper, two 24 GHz horizontally polarized 1 × 8 patch antenna arrays were developed for automotive radar applications. The proposed offer the advantages of wide fan beams and high gain. far-field radiation patterns are widened in E-plane by disturbing near-field distribution each driven patch. Design I, is loaded with a parasitic loop, which functions as director E-plane. Due to directing effect, beamwidth can be increased. experimental verification prepared I showed that 130° gain...

Efficient renal clearance has been observed from ultrasmall zwitterionic glutathione-coated gold nanoparticles (GS-AuNPs), which have broad preclinical applications in cancer diagnosis and kidney functional imaging. However, origin of such efficient is still not clear. Herein, we conducted head-to-head comparison on physiological stability two luminescent AuNPs coated with cysteine glycine-cysteine (Cys-AuNPs Gly-Cys-AuNPs), respectively. While both them exhibited similar surface charges the...

A wide-beam microstrip patch antenna and array ranging from 77 to 81 GHz are presented in this study for millimeter-wave applications. substrate-integrated-waveguide probe-fed was developed. For beamwidth enhancement, two I-shaped parasitic elements were placed next the main establish a three-element subarray. The current directions of opposite that patch, leading enhancement E -plane radiation pattern. proposed element has advantages coplanar structure, compact size, easy adjustment induced...

A design for waveguide-to-microstrip transitions at millimeter-wave frequencies is proposed in this letter. It features two major transformations sequence. An <i xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">E</i> -plane probe chosen to conduct the transformation from waveguide a suspended line. Then, transitional pattern on printed circuit board employed transform line into shielded microstrip To complete design, metallic buffer introduced between...

Ensemble docking can be a successful virtual screening technique that addresses the innate conformational heterogeneity of macromolecular drug targets. Yet, lacking method to identify subset states effectively segregates active and inactive small molecules, ensemble may result in recommendation large number false positives. Here, three knowledge-based methods construct structural ensembles for are presented. Each selects by optimizing an objective function calculated using receiver operating...

The function of power divider is to divide from one input port into the divided at multiple output ports, or combine ports combined port. goal this study design a millimeter-wave operating range 32 GHz 34 GHz. return loss each and isolation between are required be greater than 15 dB. insertion need less 3.1 concept E-plane bifurcated waveguide proposed implement because concerns about operation high-frequencies high-power handling, capacity. A resistive film placed inside in order meet...

This work presents a wideband 60 GHz microstrip patch antenna (MPA) array based on low‐temperature co‐fired ceramic (LTCC) multilayer technology. Four parasitic patches are stacked above the driven MPA. An additional resonant mode is excited by proposed surrounding (PSSPs) to enhance bandwidth of The structure PSSPs increases gain MPA due its configuration. PSSP can find many applications in designs for large‐scale arrays because and distributed at different layers. arrangement allows direct...

Abstract A new connector for coaxial‐to‐microstrip transitions is proposed. The structure designed the transformation of electromagnetic field distributions a coaxial line and microstrip consists two blocks split from metallic ring parallel arrays via holes embedded in substrate line. Insertion loss caused by discontinuity at their transition reduced, particularly higher frequencies. Thus, transmission passband extended. prototype prepared its to with simulated measured design example....

The design of baluns with wide bandwidth, transformation between complex source and load impedances, high isolation is presented in this paper. These features can be accomplished simultaneously by employing double-stub couple lines (DSCL). differential characteristics are established only exciting the odd-mode operation balun, suppressing its even-mode operation. For operation, structure DSCL acts as a multi-stub contributes to bandwidth enhancement. An additional resistor added output ports...

In this paper, the systematic design for a dual-band balun featuring impedance transformation and high output isolation is presented. A capable of conducting between an unbalanced 50-$\Omega $ line balanced one 300-$\Omega proposed its operations at 2.4/5.2 GHz with isolation. The combination $\lambda /4 stepped-impedance-stub $3\lambda T-junction coupled produces phase difference 180° two operating frequencies balun. An important feature 1:6 from source to load. High can also be achieved by...

The technique of dual transmission lines is applied to replace quarter-wave transformers for impedance transformation. By varying the electrical lengths two lines, bandwidths proposed are reduced and become adjustable. Two designs presented illustrate these characteristics. rectangular configuration minimises coupling between its input/output ports; whereas ring allows ports be arranged in any desired directions. Simulation results indicate larger difference electric narrower bandwidth...

Coaxial-to-microstrip transitions are usually a required part of microwave and millimeter-wave products that feature microstrip-based circuit designs. The not only facilitate device testing; they also benefit system assembly integration. To meet the growing demand for high-speed data rates from wireless communication systems, broadband behavior has become desired circuits as well their coaxial-to-microstrip transitions. conventional design suffers severe insertion loss at higher frequencies....

This study presents 60-GHz patch antennas backed by artificial magnetic conductor (AMC) arrays for bandwidth and gain enhancement. Low-temperature cofired ceramic technology was adopted antenna fabrication. Three implemented with different AMC configurations were simulated compared. The patch-shaped selected final fabrication because of its superior performance. proposed provided a measured impedance 50.2 − 68 GHz or an equivalent fractional 30.3%. maximum 7.8 dBi at 63 GHz.

In this study, a 24-GHz horizontally-polarized 1×8 patch antenna array was developed for automotive radar applications. The proposed offers the advantages of wide fan beam and high gain. driven is loaded with parasitic mushroom-like elements (PMLEs). PMLEs are 180° out phase to their corresponding patch. cancellation effect can be properly managed slightly sacrifice gain in return wider beamwidth Eplane. design exhibits 150° 11.1 dBi.

This work presents a four-port in-band full-duplex (IBFD) antenna that allows transmitting and receiving two sets of orthogonal co-circularly polarized signals, facilitating IBFD system applications. The single-element is constructed using six-port isolation network (SPIN) without the need for circulators, helping to reduce cost facilitate integration. transmit-receive accomplished via power dividers cancellation guided by coupling path SPIN. microwave analysis method perfectly analyzes...

In this paper, the same techniques employed for bandwidth enhancement of slot-coupled vertical transitions are applied to cavity-coupled transitions. The with rectangular, bowtie, H-shaped, and cross-rectangular coupling slots under investigation. each transition is compared that its corresponding demonstrate their superior performance in transmission

A measurement technique is proposed to conduct S-parameter measurements on symmetrical reciprocal three-port devices using a two-port vector network analyzer. The takes the effects of reflection from an unmeasured port terminated with non-ideal 50-Ω load into consideration. These reflected signals cause errors in measurements, especially at higher frequencies where too large be ignored. have been overlooked traditional analyzers. In this paper, analytic equations are presented for some...

FullSubNet+ and its adaptive counterpart, adaptive-FSN, are well-known neural network-based speech enhancement (SE) approaches that use a full-band sub-band fusion model to perform the SE job. The magnitude complex spectrogram used in these methods learn network, which consists mostly of multi-scale time-sensitive channel attention (MulCA) modules stacked temporal convolution network (TCN) blocks. To capture phase information input time-domain signals more simply, we propose using discrete...

In this research, a ray tracing model is built up to simulate the propagation of signal in global positioning system (GPS) radio occultation (RO) mission. When GPS propagate through Earth's atmosphere, it will be bent and delayed due gradient atmosphere refractive index received by low Earth orbit (LEO) satellite. Then parameter profiles can retrieved using signal. previous order simplify simulation, assumed as spherical symmetry positions LEO satellites are not considered simulations....

This work presents a textile antenna with dual- wideband performance for wearable wireless communications. The patch-slot loop structure was developed to obtain two wide operating bands, in which slot cut on the ground plane underneath patch. top patch acts as radiating element at upper band, while is fed by excite resonance lower band. A copper-plated polyester fabric used fabricating radiator and plane. An insulating neoprene permittivity of 1.5 preparing substrates. proposed can achieve...

In this paper, a miniaturized UHF band second-order quasi-elliptic response bandpass filter (BPF) is proposed. Traditional transmission line suffers from large circuit size and footprint area. For the purpose of miniaturization, spiral quarter-wavelength short-circuited resonators used in BPF design. further reduction, proposed implemented by stacking multilayer substrates. Coplanar waveguide (CPW) lines are as input output ports on same layer, which can be compatible with surface mounting...