A frequency-reconfigurable microstrip patch switchable to slot antenna is proposed. The
antenna is capable of frequency switching at nine different frequency bands between 1.98 …

A planar, compact, single-substrate, multiband, frequency-reconfigurable multiple-input-
multiple-output (MIMO) antenna system is presented. The proposed antenna elements are …

A cognitive transceiver is required to opportunistically use vacant spectrum resources
licensed to primary users. Thus, it relies on a complete adaptive behavior composed of …

A reconfigurable five-element Yagi-Uda monopole array is presented that utilizes pressure-
driven liquid-metal elements. There is one centrally located driven element and six parasitic …

In this paper two triple-band monopole antennas are proposed for portable wireless
applications such as WiFi, WiMAX and WLAN. Two different geometrical structures are used …

This paper presents a reconfigurable aperture-fed patch antenna array for±45°
polarizations. First, a new method to realize the reconfigurable±45° polarizations is …

A radiation pattern reconfigurable antenna designed using metasurface (MS) is proposed in
this study. The pattern reconfigurable metasurfaced (PaRMS) antenna is composed of a …

A novel reconfigurable directed dipole antenna operated in a wideband or four narrowband
modes is presented. The wideband mode (0.83-2.5 GHz) is based on a folded bowtie …

The recent trends in wireless communication systems show that the demand for devices
able to operate within more frequency bands has been inflated considerably. This has …

A flexible quasi-Yagi printed antenna that is a compact, efficient directive radiator is
demonstrated. The simple uniplanar design incorporates an arc-shaped strip, which serves …