Radiation efficiency and impedance bandwidth of conductor-backed CPW-fed broadside twin slot antennas on two-layer dielectric substrate

Compact Folded Monopole Antenna Excited by a Conductor-Backed Coplanar Waveguide with Vias

“…In this letter, as an extension of the work in [5], we propose a compact UWB WUSB dongle antenna fed by a conductorbacked coplanar waveguide with vias. Conventional conductor-backed coplanar waveguides (CBCPWs) are applied in a slot antenna design to change the radiation from bidirectional to unidirectional [6]. However, these types of conventional CBCPWs usually generate undesired parallelplate mode leakage, which deteriorates the antenna gain and efficiency.…”

Design of a linear nonuniform CPW‐fed slot array with reduced sidelobe levels

“…Ref. 1, shows that conductorbacked CPW-fed slot antennas can be designed for a two-layer dielectric substrate with good radiation efficiency and bandwidth.…”

“…Metamaterials are a sort of artificial composite materials exhibiting extraordinary electromagnetic (EM) properties, which have attracted much attention in physics and engineering in the past few years [1,2]. The applications of such a material have been widely spread in many fields such as imaging lenses [3], planar microwave circuits [4].…”

Effect of back-plane distance on mutual coupling between CPW-FED slots on conductor-backed two-layer substrates

“…Figure 1 shows the resulting structure, which can also be thought of as a two-layer conductor-backed substrate with an air bottom layer (that is, r2 ϭ 1). Our interest in this particular structure follows from earlier work [6], in which we showed that radiation efficiency attainable with appropriately-spaced twin slots on such a substrate is comparable to that of twin slots on d /4 single-layer substrates with a reflector positioned o /4 away from the CPW ground planes side [7] ( d is the wavelength in the dielectric; o is the free-space wavelength). This was true even though the substrate of Figure 1 was of lesser electrical height-a potential advantage at microwave frequencies.…”