This study presents a compact ultra-wideband (UWB) antenna fed by coplanar waveguide (CPW) with huge bandwidth for the demands of modern wireless communities. To overcome some technical limitations employed substrate and UWB design, slotted patch resonator was used to create simulate this based on Locked-Key topology. It has been printed 1.5 mm-thick FR4 dielectric constant 4.4. A feeder charac...

We designed and fabricated an electrically small antenna (ESA) with coplanar waveguide (CPW) matching circuit. Matching circuit is realized by using interdigital gap and transmission line. We designed ESA with the aid of the commercial three-dimensional electro magnetic field simulator. We also made experiments on the ESA with CPW matching circuits using patterned circuit board.

For more size reduction of the high temperature superconducting coplanar waveguide (CPW) bandpass filter (BPF), we introduce the design method of the meanderline CPW quarter-wavelength resonator BPF. The exact admittanceand susceptance-inverters are calculated by using the 2.5-dimensional electromagnetic field simulator. The prototype YBCO miniaturized BPF (center frequency =10GHz, n=3, band wi...

We present a novel design of a waveguide to microstrip or coplanar waveguide transition using a unilateral finline taper. The transition from the unilateral finline mode to the TEM microstrip mode is done directly, avoiding the antipodal finline tapers that have commonly been employed. This results in significant simplification of the design and fabrication, and shortening of the chip length, t...

ISSN 2277 5080 | © 2012 Bonfring Abstract--In this paper, a modified form of rectenna has been designed for wireless power transmission. Generally, rectenna is nothing but a rectifying antenna which is very much useful for converting RF power into usable DC power. The word ‘rectenna’ was first introduced by W.C.Brown. Even though there is an enormous application of rectenna, wireless transmissi...

A new design of coplanar waveguide (CPW)-fed antenna with circular polarization (CP) and excellent impedance matching is presented. In this design a pair of circular-shaped slits is applied to opposite corners of the slot for enhancing the impedance matching and realizes bandwidth of 134.43% across 2.98-15.20 GHz for VSWR≤2. Furthermore this structure exhibits axial ration bandwidth (ARBW) of 3...