Abstract This paper proposes a new dual horizontal squash capsule network (DHS‐CapsNet) to classify the lung and colon cancers on histopathological images. DHS‐CapsNet is made up of encoder feature fusion (EFF) novel (HSquash) function. The EFF aggregates extracted from 2‐lane convolutional layers, which provides rich information for better accuracy. HSquash proposed as function ensure that vectors are effectively squashed produces sparsity high discriminative extract important images with...

Most multicellular organisms require apoptosis, or programmed cell death, to function properly and survive. On the other hand, morphological biochemical characteristics of apoptosis have remained remarkably consistent throughout evolution. Apoptosis is thought at least three functionally distinct phases: induction, effector, execution. Recent studies revealed that reactive oxygen species (ROS) oxidative stress could play an essential role in apoptosis. Advanced microscopic imaging techniques...

This work presents a novel planar branch-line coupler topology developed for dual-band operation using an E-shaped impedance transformer network to supplant the conventional microstrip line. Explicit closed-form design equations are derived ABCD matrices. The studied features large frequency ratio with compact size. A prototype centered at 1 and 8 GHz is first presented experimentally examined demonstrate ratio. Further, another 2.4 5.2 potential WLAN applications also characterized....

Abstract This study presents a broadband and high efficiency hybrid inverse continuous filtering power amplifier (FPA) based on terminated coupling line structure. The proposed FPA uses lines as the main transmission line, loading different stubs can simultaneously achieve input matching output bandpass filtering. four generated zeros good performance. After discussing structure, PA operating at 1.7–2.4 GHz was designed optimized. measurement simulation results showed consistency. best...

Abstract Bowtie antenna-based time reversal mirror (TRM), incorporating with randomly distributed and arbitrarily shaped wire metamaterials medium, is proposed to realize super-resolution target detection. The achieved performance for standard scatterer bowtie antenna TRM compared discussed. dual-band antennas resonate at 2.45 GHz 5.2 a of 0.0817 the free-space wavelength has been achieved. For first time, studies show that microstructure perturbations (namely scatterers) can enhance...

Based on the multi-coupled line, a novel compact microstrip diplexer with high isolation and low insertion loss is developed. The presented consists of five short-ended parallel coupled lines to implement desired channel selections while exempting use extra T-junction matching networks, as compared conventional case. design concept detailed prototype developed examined experimentally, where two channels are center frequencies 1.8 2.4 GHz, respectively. On other hand, figure-of-merit (FOM)...

This paper presents the techniques to broaden magnitude and phase bandwidth of a branch-line balun. Explicit equations based on S parameters are derived presented by converting 3-port network 2-port network, while compactness was achieved meandering branches. A demonstrator balun developed examined from numerical evaluations experiments. Measurements agree well with theoretical calculations predictions. Moreover, figure merit (FOM) has been proposed, for first time, comprehensively...

Abstract A lumped- LC equivalent circuit to model a novel rectangular bracket shaped defected ground structure (DGS) is presented in this paper. The can accurately predicate the frequency responses, terms of magnitude and phase responses S parameters, studied DGS. lumped parameters are extracted based on unit cell Further, found be applicable microwave engineering, including filter designs. Some design examples examined. DGS filters characterize maximum passband flatness, sharp skirt between...

Wireless power transfer has become a trending research area for remotely transferring power. This paper presents the numerical simulation study of selective wireless to closely spaced sensors embedded in reinforced concrete. A microwave is achieved at 10 mm separation between tightly-coupled monopole antennas (wireless sensor antennas). Both operate 2.45 GHz, hence beating diffraction limit λ/12 with incorporation additional scatterers concrete environment. The main objective realize...

Abstract This contribution is an extended in-depth study of our previously initial research work about the compact Log-periodic microstrip DGS lowpass filters. The improved filters proposed use a log-periodic zig-zag structure defected on ground plane under compensated line for microwave filter applications. More importantly, comprehensive index called figure-of-merit (FoM) introduced in this paper to characterize achieved performance kind Results show that high FoMs can be realized...

Microwave based imaging has been extensively examined for biomedical and research is still ongoing to attain best systems. Examination detection of dielectric property differences biological tissues over a wide range frequencies such applications. This paper looks at the design dual band Bowtie time reversal mirror (TRM) using electromagnetic technique resonating 2.45 GHz 5.2 GHz.

We present numerical simulation study of super-resolution imaging closely spaced sub-wavelength size breast tumours with low cost microwave MIMO bowtie antenna array integrating near-field planar multi-layered patch (MLSWP) scatterers by using a monopole as the excitation source. The MLSWP scatterers, serving transforming structures for propagation evanescent waves far-field time reversal technique incorporating mirror (TRM), are investigated in this paper. use has enhanced directivity and...

Abstract The design and implementation of planar multi-way differential power dividers remain a challenge in terms the compactness especially, for achievable characteristic impedance quarter-wavelength transformer when considering large number outputs. In this work, double-sided parallel stripline is recommended to realize such divider with out-of-phase outputs, explicit methods are provided. proposed was developed without use lump elements on single substrate. For system applications,...

Abstract This contribution presents, for the first time, design of microwave lowpass filter with ultrawide stopband and low insertion loss based on log-periodic zig-zag defected ground structure (DGS); is specifically evolved from principle line antenna slotline DGS. Based property, studies show that ultra-wideband suppression can be realized by increasing flare angle or subtended each element The developed therefore shows 0.7 dB within passband, sharp transition between passband ultra-wide...

This paper presents the design of wideband directional coupler with enhanced isolation performance. Studies show that introducing zigzag coupling releases phase-velocity difference between even- and odd-mode in region, thus improving directivity. To further improve performance, wedge structure is proposed, therefore, a coupled-line developed responses. The presented characterizes simple architecture, planar layout, symmetric topology, responses are basic among many reported works, wide...

In this letter, a microstrip-line-based spoof surface plasmon polariton (SSPP) is exploited in application to analog signal processing time reverse high-frequency electromagnetic signals. Such SSPP structure described and analyzed. The reversal function achieved by incorporating microwave switches periodically loaded the studied structure. developed prototype demonstrator shows an amplitude-modulated can be effectively reversed domain.

This paper presents the design of a circular microstrip patch antenna time reversal mirror (TRM) for microwave wireless power transfer applications. The proposed has 4.9 GHz bandwidth covering 5.8 WLAN band. Defects were used to improve and return loss TRM with enhanced radiation suitable off-body biomedical For proposed, slots act as scatterers enhancing performance transforming structures. is designed on substrate relative permittivity 2.65 having tangent 0.003. It compact size 30mm by...

Synthetic aperture radar (SAR) due to its capabilities such as all-day and weather-independent operations suitability diverse platforms satellite, missile, airplane, unmanned aerial vehicle among others, has an edge over optical imaging for various applications. The antenna is a key component, which determines the overall performance of SAR system. systems place great demands on these must be factored into selection suitable candidate this application. Generally, antennas applications...

This paper presents the design of a compact miniaturized indented T shaped Monopole antenna for Wireless Local Area Network (WLAN) applications covering 5.15-5.35 GHz band. The proposed is center offset with size 13 mm by 20 and 0.8 thick, low profile enough integration Monolithic Microwave Integrated Circuit (MMIC). Design simulation was carried out using High Frequency Structure Simulator (HFSS) from Ansoft, commercial software results obtained shows return loss (RL) better than 10dB at...

Dual-mode patch resonator-based microstrip filters with finite real or imaginary transmission zeros are discussed by combining the analytical studies numerical investigations. The study presents coupling scheme of a dual-mode resonator, while simulation discusses nature between source (input) and load (output), which constitutes presented half-analytical model. Furthermore, difference in-band losses two different responses can also be qualified based on this contribution novelty work is...

Motivated by the quest to curtail high mortality rate of breast cancer, manuscript proposes sensitivity enhancement monopole antenna for hyperthermia application using electromagnetic time reversal (EMTR) technique with transformation structures early treatment multi-focal tumors. The EMTR is characterized temporal and spatial focusing, hence enhancing visibility tumors embedded in medium. In this study, we aim at non-invasive power deposition on sub-wavelength-sized sub-wavelength...

Abstract A dual-circularly polarized traveling wave antenna based on linear polarization array with wideband response is proposed. The circular realized by the sequential rotation arrangement of four elements and series feeding a phase difference 90°. Rotating such subarrays sequentially 90° not only broadens axial ratio (AR) bandwidth but also corrects pattern beam deflection. Left-handed (LHCP) right-handed (RHCP) are respectively achieved exciting two different ports. measured impedance...