A dual‐band planar antenna based on composite right and left handed (CRLH)
metamaterial is presented. The proposed antenna is comprised of a host folded planar …

This paper presents a solution to overcome the inherently limited bandwidth of substrate-
integrated waveguide (SIW) slot antennas. It is analytically shown that by decreasing the …

In this communication, a novel dual-polarized (DP) epsilon-near-zero (ENZ) antenna is
proposed with its operating frequencies independent of lengths for both polarizations. To …

To prevent far-field radiation characteristics degradation while increasing bandwidth, an
attempt has been made to design and fabricate a microstrip antenna. An electromagnetic …

In this paper, a conical horn antenna in the presence of a metamaterial lens in the X‐band is
introduced and fabricated. The annular metamaterial lens is located at the aperture of a …

A novel design of printed monopole antenna loaded with wire medium is developed for
radar applications. The advocated design aims to simultaneously enhance the gain and …

In this paper, a new approach to enhance the radiation efficiency of microstrip patch
antennas by a quarter-wavelength antireflection superstrate is proposed. It is based on …

This paper presents a wideband leaky-wave substrate-integrated waveguide (SIW) slot
antenna. The proposed structure comprises slots loaded with a low-index metamaterial …

This letter presents a symmetrical slot‐type bowtie antenna with widened impedance
bandwidth and high efficiency. Two symmetric vias are exploited underneath each slot in …

The development of technology implies the release of several gases to the environment.
These gases, especially toxic ones, have many negative effects on human life and cause …