In this paper, microstrip patch antennas with six different shapes i. e. rectangular, circular, square, elliptical, pentagonal and hexagonal are implemented using Ansoft HFSS version 13. 0. 0 software. Antennas are designed on Rogers RT/duroid 5880 material with dielectric constant 2. 2 and thickness 3. 2 mm. The different performance parameters such as return loss, gain and bandwidth of these ...

This paper presents a new design method for capacitor-loaded cross-coupled cavity filter, which significantly increases the power capacity of filter while improving out-of-band rejection. The uses coaxial resonator at open end donut capacitive-load. A triangular form structure is used full-cavity arrangement to reduce size filter. In order validate design, with center frequency 2.08 GHz and ban...

An H-U-E shaped slotted microstrip antenna with improved bandwidth is presented in this paper. The antenna resonates in the frequency range of (2.0–6.3) GHz with the center frequency of 4.2 GHz. The proposed antenna provides return loss approximately -30 dB. The antenna is fed with coaxial feeding yields an impedance bandwidth of 103.6% and VSWR of less than 1.07. The proposed antenna is simula...

In this paper, the full-wave analysis of direct scattering problem in rectangular waveguide is derived. The numerical calculation results characteristics are presented. To show advantage our proposed model, we compared with three-dimensional simulation software Ansys HFSS calculations. An excellent agreement observed when these two approaches.

The design presented here mainly focuses on implementation of a broadband Wilkinson balun using composite right/left-handed (CRLH) transmission line. This has its components, namely Wilkinson power divider (WPD), microstrip phase shift line and CRLH unit cell along with interdigital capacitor, which forms base of the unit cell. The designing and implementation of WPD, CRLH unit cell and Interdi...

A two-dimensional (2D) diffraction model for the calculation of the diffraction field in 2D space and its applications to terahertz parallel-plate waveguide power splitters are proposed in this paper. Compared with the Huygens-Fresnel principle in three-dimensional (3D) space, the proposed model provides an approximate analytical expression to calculate the diffraction field in 2D space. The di...

When certain memory becomes obsolete, effective suppression of the previously established memory is essential for animals to adapt to the changing environment. At the cellular level, reversal of synaptic potentiation may be important for neurons to acquire new information and to prevent synaptic saturation. Here, we investigated the function of Ca(2+)-stimulated cAMP signaling in the regulation...

Motivated by the idea of single valued neutrosophic uncertain linguistic sets (SVNULSs) and hesitant fuzzy sets (HFSs), in this article we combine SVNULSs with HFSs to present the idea of hesitant single valued neutrosophic uncertain linguistic sets (HSVNULSs), hesitant single valued neutrosophic uncertain linguistic elements (HSVNULEs) and defined some basic operational laws of HSVNULEs. We al...

The analysis and design of the multi-element coupled lines, in conjunction with the junction discontinuity effect, is presented, and its applicability in high power rf regime is discussed. Junctions are usually employed to connect two different coupled elements, which gives rise to undesirable reactance, i.e., junction discontinuity effect. These effects are found prominent in the high power co...