The first demonstration of a printed antenna remote unit (ARU) for optically distributed mobile communications compliant with the 1.9-GHz PCN specifications is presented. The ARU consists of a cavity-backed printed antenna with appropriate RF and photonic circuitry. The ARU is low cost, compact, robust, and can be easily positioned in typical microcell/picocell sites. A summary of the design pr...

This paper presents a cavity-backed antenna array in substrate integrated waveguide (SIW) technology the millimeter-wave frequency band. The proposed design uses double slots as radiating elements instead of conventional single slots. allow better control operating bands antenna. performance antennas with and is compared to assess enhanced behavior As proof concept, 2 × designed, manufactured, ...

This article presents the methodology to design a single-fed circularly-polarized antenna with low front-to-back ratio (FBR). A circular-patch (CPatch) has been incorporated within rectangular-cavity, made of, substrate integrated waveguide (SIW). The size of CPatch and SIW cavity chosen appropriately, in manner, that both resonators dominant mode coincide. arrangement adopted realize basic rad...

In this article an Archimedean spiral antenna is designed and analyzed that has good operation in broadband application. By analyzing this design, the effects that different parameters have on antenna operation will be studied and ways of optimization will be found.  Influences of cavity height and number of turns to obtain good matching and gain in a frequency interval of 4 to 18 GHz will be d...

The characteristics of dielectric backed planar conducting layers of arbitrarily shaped in a rectangular waveguide are calculated by means of coupled integral equation technique (CIET) which accurately takes higher order mode interactions. Equivalent structures for the accurate analysis whole structure are introduced in which magnetic surface currents are identified as the unknowns at the apert...