Abstract Achieving optimal bowel preparation is pivotal for successful colonoscopy. However, in the real-world scenario, this challenging. A recent study by Panigrahi et al sheds light on Shankhaprakshalana (SP) as a promising method achieving before Our primary aim was to evaluate effectiveness of SP bustling environment outpatient clinic. It prospective conducted at Kalinga Gastroenterology Foundation, Cuttack, between May and August 2024. Patients requiring colonoscopy underwent using...

A novel multiband microstrip patch antenna suitable for WLAN and WiMAX applications is proposed in this paper. The primarily comprises of a defected ground plane an inverted, upright chair type patch. resonates at four frequencies, 3, 3.5, 4.1 5.3 GHz with bandwidths 640, 420, 620 150 MHz respectively, which makes it to use WLAN, WiMAX, other RF communications. miniature size $25 \times 19 1.53$ mm <sup xmlns:mml="http://www.w3.org/1998/Math/MathML"...

The letter demonstrates a coaxial transmission line-to-substrate integrated waveguide (CT-SIW) transition using aperture-coupling approach. method broadens the bandwidth (BW) and reduces insertion loss (IL). Two line supports with apertures for coupling are attached at ends of substrate (SIW). copper inlaid increases to SIW can be controlled by aperture length wire put in aperture. was designed, fabricated, experimentally evaluated. provides measured 10 dB return (RL) fractional BW (FBW)...

A H-plane Substrate Integrated Waveguide (SIW) horn antenna with improved performance is designed in this paper. modified SIW feeding technique and corrugated flare presented for improvements the gain, bandwidth, radiation efficiency cross-polarization reduction. The section of uses stepped transformer improvement impedance bandwidth. used to enhance characteristics proposed antenna. center frequency 18.48 GHz. It has a gain 8.69 dBi, bandwidth 2.82 % 95.67%.

A soft-computing-based novel design approach is proposed for the of multifunctional antennas to be used in wireless consumer electronic devices. With combined utilization particle swarm optimization (PSO) and merits neural network (NN) technique, developed formulation produces multifrequency fractal antenna structure specific multiple frequencies handles suitable feeding these frequencies. The role trained NN remove need an electromagnetic simulator that embedded loop PSO. involvement PSO...

A compact symmetrical Quarter Mode Substrate Integrated Waveguide (QMSIW) based antenna with improved performance in terms of impedance matching, radiation efficiency, gain and the reduced cross-polarization level for C-band application is proposed this paper. In design, two circular ring slots are inserted to achieve polarization (CP) four open circuit stubs used at corners improve matching. The generates TE <sub xmlns:mml="http://www.w3.org/1998/Math/MathML"...

A Substrate Integrated Waveguide (SIW) based patch antenna with improved performance in terms of impedance bandwidth, radiation efficiency, gain, reduced cross-polarization level and harmonic suppression is proposed this paper. In addition to the SIW technique, reason use a modified proximity microstrip feed line consisting stepped transformer followed by pair λ <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">g</inf> /4 microstrip-line...

In this paper, a compact antenna with improved gain, reduced dimension, and enhanced bandwidth for Ultra Wide Band (UWB) characteristics has been realized. The microstrip line (ML) is used to feed section of the UWB followed by semicircular patch. ground part inserted combination rectangular This gives path gain. proposed radar satellite communication system. prototype fabricated tested dimension 21.6 x 12.6 2.54 mm3. measured results are found be sufficiently close simulation results. It...

Abstract Deformation softening is quite often observed during hot working of different alloys. Steels, aluminium, titanium or nickel alloys can demonstrate a decrease in flow stress under active deformation at constant temperatures and strain rates. Though the background microstructural mechanisms as well rates be different, treatment such processes requires special attention. cause significant non-uniformity metal resulting localization, formation shear bands variation microstructure across...

This brief describes a transition from conductor-backed-coplanar waveguide (CB-CPW) with substrate-integrated coaxial line (SICL) to substrate integrated (SIW). The is designed for the C-band frequency range. CB-CPW slot lines play main role in widening bandwidth. These CPW are providing excitation of both even and odd mode waves SIW, which improves impedance Using proposed concept, measured single-mode fractional bandwidth 63.34%, minimum insertion loss 0.16 dB, overall below 25% achieved....

In this paper, a wideband transition from tapered microstrip (TMS) to corrugated substrate integrated waveguide (CSIW) for Ku band application is presented. The design was initiated (SIW) and stubs are used at the feeding improve impedance matching. Additionally, CSIW implemented in meant further size reduction, improved bandwidth, reduced insertion loss. measured fractional bandwidth of 50 % (12-18 GHz) below -15 dB (simulated: -18 dB) has been achieved proposed transition. An loss 3...

In this paper, a dual-band antenna using modified interdigital capacitor (IDC) based composite right/left-handed transmission line (CRLH-TL) unit cell is presented. The IDC CRLH has non-uniform finger width along its length. proposed modification can be utilized for further size reduction, improved gain, and efficiency. Besides that, two λg/4 resonators are employed to suppress the harmonics generation. Additionally, shorting pin plays vital role in achieving better impedance matching....

In this paper, a linearly polarized compact patch antenna for potential application to vehicle-to-vehicle communication is presented. This work focuses on the antenna's miniaturization enhanced gain and wide half-power beamwidth. Two quarter-wavelength resonators are used as part of feeding network which leads suppression unwanted out-of-band harmonics. As result, impedance bandwidth slightly enhanced, size also reduced by 25.4% compared conventional patch. addition, two semicircular slots...

This paper presents a dual-band substrate integrated waveguide (SIW) cavity slot antenna with improved performance in terms of impedance matching, radiation efficiency, gain, and reduced cross-polarization level for C-band application. A pair diagonal corner truncated L-shape slots on the SIW generates circular polarization (CP) linear (LP). Two shorting pins are placed near feed line to realize better matching. square patch corners is designed polarization, two used The pattern proposed LP...

In this paper, a modification to the conventional interdigital capacitor (IDC) based composite right/left-handed transmission line (CRLH-TL) unit cell is presented. The proposed can be utilized for further antenna size reduction. modified IDC CRLH cells have uniform finger width along its length and change position of shoring vias. This introduced aids in reduction as compared that with unmodified same dimensions. simulation measurement results variations reflection coefficient...

In this paper, a dual-band substrate integrated waveguide (SIW) antenna loaded with composite right/lefthanded transmission line (CRLH-TL) unit cell is presented. Initially, modified interdigital capacitor (IDC) CRLH-TL was designed, which generates the dual-band. Two-unit cells are in SIW based that works common and differential mode of operation. The proposed modifications meant for further size reduction, improved bandwidth. Additionally, two λ <sub...

In this paper, a new broadband transition between microstrip and substrate integrated waveguide (SIW) by using three quarter-wave stepped transformer (QWST) is proposed. order to achieve good reflection coefficient, better in-phase response monitoring, low loss, wide bandwidth, acceptable insertion SQW transformers are implemented in proposed structure. The designed structures simulated optimized ANSOFT HFSS ver.19 cross-verified an Advanced system (ADS). experimental results sufficiently...

This paper presents the design of a low-profile dual-band substrate integrated waveguide (SIW) based H-plane horn antenna with microstrip feeding. The dual band is generated by implementing four different types (levels) vias in flare part horn. feeding section employs three quarter-wave transformers to improve impedance matching and bandwidth. measured fractional bandwidths (FBWs) 3.08 1.23%, peak gains 6.22 6.02 dBi, radiation efficiencies 89.55 85.24%, cross-polarization levels more than...

In this paper, the design and testing of a dual-band circular polarized (CP) printed antenna is presented. The proposed structure used as simple approach to obtain with CP operation. Initially, three parasitic elements are implemented at beside left right coaxial feed achieve dual-band. Additionally, another element improve impedance bandwidth. Besides that, two H-shaped stubs corner truncated match CP. shorting pin for better match. measured resonant frequencies generated 3.5 3.9 GHz...

In this paper, we have presented a dual-band graphene patch antenna for mid-THz application. The comprises of two rectangular slots in single layer, which is placed on the top metal-backed SiO <inf xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">2</inf> dielectric. fed with proximity feed and it operates at different frequencies viz., 1.27 THz 4.08 THz. It gives wide bandwidth 0.4 0.3 minimum reflection coefficient -41 dB -28 THz, respectively....

In this paper, a new H-plane multi-horn antenna is designed for small nonmetallic unmanned aerial vehicle (UAV) application. Four horn antennas are integrated into single square substrate using the waveguide (SIW) concept. fact, they placed concentrically and directed at four edges of substrate. order to control resonant frequency 5.8 GHz obtain proper matching, co-axial connector center structure. The provides quasi-omnidirectional radiation instead directional pattern H-plane. laboratory...

This paper is presenting a broadband, low-profile ( <tex xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">$0.008 \lambda_{0}$</tex> ) substrate-integrated waveguide (SIW) H-plane horn antenna with the reduced side lobes and improved front-to-back ratio (FTBR). achieved implementing three rectangular slots near coaxial feed. The hexagonal in front of aperture are used to improve impedance matching. measured fractional bandwidth 29.5% (3.25 GHz),...

As the global popularity of fifth-generation (5G) telecommunication systems increases, so does need for electromagnetic (EM) shielding rises. For such requirements, frequency selective surfaces (FSS) arise as a possible solution. This paper presents fractal surface design sub 6 GHz 5G bands that provide tri-bands on 1.5 GHz, 3.5 and 5.5 frequencies. The second-order Sierpinski gasket is taken unit cell FSS element. simulated results proposed FSSs are capable getting wider bandwidths minimum...