Abstract A new type of fractal‐shaped microstrip patch antenna for ultra‐wideband (UWB) applications and with sufficient rejection in the WLAN band is presented. The radiating placed on a 1.6 mm thick low‐cost FR‐4 epoxy substrate fed using symmetric coplanar waveguide. size proposed terms wavelength 0.189 λ 0 × 0.197 . sectorial‐circular slot used to create notch. An impedance bandwidth 11.76 GHz (from 2.19 13.95 GHz) achieved, along achieving from 4.67 6.21 GHz. Nearly omnidirectional...

The spread of COVID-19 has resulted in reports increase stress, anxiety, and depression across society, especially people who have tested positive for COVID-19, which affects their mental health well-being. This article a quasi-randomized controlled study conducted the COVID wards hospital to examine efficacy add-on yoga intervention reducing COVID-affected patients under quarantine. peripheral capillary oxygen saturation level heart rate COVID-19-affected were also measured. A total 62...

Power factor improvement for nonlinear loads is the point of interest researchers in recent scenario. plays a major role efficiency electrical system. The Purpose this paper to show effectiveness Magnetic Energy Recovery Switch (MERS) power by using proper control strategy. MERS characterized simple configuration four active switching devices with one DC capacitor, per phase. three modes operation are discussed. Simulation on MATLAB/ Simulink environment conducted resistive inductive load...

Abstract A new miniaturized ultra‐wideband antenna with sufficient dual‐band rejection in WiMAX and WLAN bands is reported. The uses the conventional rectangular patch radiator built‐in sectorial Inverted‐U slots to achieve required rejections. coplanar waveguide feed line has been used operation. design implemented on 1.6 mm thick FR‐4 substrate. size 20 × 26 2 (0.16 λ L 0.208 terms of wavelength). An impedance bandwidth 2.4 GHz 10.5 achieved. Pass‐band gain 7 dBi stop‐band −4 have...

This research paper presents speed control of a Permanent Magnet Synchronous Motor (PMSM) driven Electric Vehicle (EV) using the Field Oriented Control (FOC) technique for complete reference drive cycle. The controller is designed to operate both on rated parameters EV and distorted EV. model simulink in MATLAB® 2020a also incorporates concept regenerative braking. first part simulation deals with test second analyzing performance after changing certain called sensitive motor order...

A miniaturized circular patch antenna with split triangular slit in the radiating is proposed. The radius of 23 mm and ground plane size 50 × mm. simulation carried using CST Microwave studio software. results show that proposed will resonate at 5.69 GHz frequency extremely high return loss 67.63 dB, a wide bandwidth 575 MHz. directivity 6.372 dBi efficiency 98.75 %. has been successfully simulated, fabricated tested. Good agreement between experimental seen. This be useful many Wi-Fi applications.

A CPW-fed double-leaf-shaped ultra-wideband planar antenna, along with its four-port MIMO configuration, is presented. The element designed through combining the techniques of a modified radiator, coplanar waveguide feeding arrangement, and defected ground structure. size operating bandwidth are 14 × 19 mm2 3.73 GHz to 22.01 GHz, respectively. has peak realized gain 4.27 dBi stable radiation patterns at lower frequencies. In four replicas this orthogonally arranged ensure polarization...

In this article, a compact and planar antenna is designed investigated. The design inspired by the hexagonal shape. proposed has bandwidth of 11.22 GHz, from 3.16 GHz to 14.38 GHz. A suitably placed inverted-U slot in patch generates WLAN band notch. overall size 20 × 26 mm<sup>2</sup> (0.21 0.27 λ<sub>0</sub><sup>2</sup> terms its highest wavelength). It suitable achieve radiation pattern that almost omnidirectional maximum gain 4 dBi...

Abstract This paper presents a small‐sized, planar antenna fabrication for ultra‐wideband (UWB) and vehicle‐to‐everything (V2X) applications. The design is inspired by hexagonal ring, providing an UWB bandwidth of 16.61 GHz (from 3.33 to 19.94 GHz) fractional 142.75%. A suitably placed inverted‐U slot in the feed line helps achieving WLAN notch band 5.04 6.01 GHz). overall footprint 0.17 × 0.23 λ 0 2 size, provides stable radiation characteristics, gain 4 dBi pass‐band with time‐domain...

Personal computers (PCs) and many other household appliances employ multi-port switched-mode power supply (SMPS). However, several problems have been encountered with conventional SMPS which typically includes degraded factor (PF), sluggish dynamic response, high source current harmonics. This will potentially lead to quality (PQ) issues. In order confront these issues, this article proposes a modified magnetic energy recovery switch (MERS), is employed at the front end of for correction...