In this study, a fractal, Y-shaped dual-mode resonator bandpass filter (BPF) with input-output cross-coupling is introduced. A parallel-coupling feed structure with a cross coupling has been used to generate two transmission zeroes (TZs) near the lower and upper cutoff frequency that can effectively improve the passband edge selectivity. Also, a fractal shaped based on conventional diamond and ...

In this paper a Microsrtip patch fractal antenna in a Sierpinski carpet is proposed for the Wireless Power Transmission (WPT) System. The design and simulation results of 2.45 GHz Microstrip patch fractal antenna are presented. The antenna is designed based on the transmission line model with the input impedance of 50Ω. The simulation results are well matched with the calculated values and show...

Wireless applications, particularly with multiple resonances, put new demands on antennas pertaining to size, gain, efficiency, bandwidth, and more. One promising approach in this regard is to use fractal geometries to find the best distribution of currents within a volume to meet a particular design goal. In the miniaturization of wire antennas it has been found that the electromagnetic coupli...

Artificial magnetic conductors (AMCs), also known as high-impedance surfaces, have received considerable attention in recent years. Artificial Magnetic Conductor surface is a kind of electromagnetic band gap (EBG) or artificially designed structure having a magnetic conductor surface for some particular frequency band. These engineered surfaces consist of a periodic arrangement of unit cells ha...

Low profile antenna in communication is a new methodology. Fractal geometry is a methodology through which size reduction is achieved. A Self-similar fractal antenna using multicantor technique is proposed and experimentally studied. Space-filling cantors and self-similarity properties of fractal geometry have been adopted in the proposed antenna to miniaturize the size of antenna. The antenna ...

An optimized design of printed hybrid fractal tree (PHFT) antenna based on binary fractal tree geometry is presented and discussed. In this work miniaturization has been achieved by inserting a modified Koch curve in the conventional fractal binary tree. The geometrical descriptors of the proposed antenna have been synthesized using Bacterial Foraging Optimization (BFO) and Particle Swarm Optim...

The reconfigurable micro strip antenna has the ability to vary its band width, operating frequency and radiation pattern. Radiation pattern of reconfigurable antenna has the to avoid the noise sources , increasing the gain and saving power by directing the ability to switch the pattern from one direction to another at common impedance , bandwidth and operating frequency . This means the pattern...

A newly designed printed slot antenna is presented that incorporates variable two band-notched functions for ultra-wideband (UWB) applications. The two band notches of this coplanar waveguide (CPW) fed antenna are achieved by an M-shaped slot (MSS) embedded in the radiating element and a C-shaped strip (CSS) close to ground plane, therefore two very narrow rejected properties in the wireless lo...

A compact microstrip-fed antenna with dual notched bands is proposed. First, a simple basic configuration is presented for Ultra Wide Band (UWB) applications and then the dual band notched structure is extended from the UWB one. The basic structure of the UWB antenna consists of a simple square radiating patch and a ground plane with a wide square slot on back of the substrate. A semi-circle sh...

We propose a multilayer unit cell consisting of Minkowski fractal-shaped reflector with aperture coupled phasing stubs to obtain broad phase range for reflectarray antenna smaller size and interelement spacing compared some other studies in the literature. In study, simulations are conducted using high-frequency structure simulator (HFSS) program Floquet Port incidence. A two cycles very low re...