This paper provide a review of the active integrated antenna (AIA) technologies. After a brief
introduction on the definition and some historical remarks, the paper concentrates on the …

An experimental 2.4-GHz CMOS radio composed of RF and digital circuits for the low-power
and low-rate preliminary IEEE802. 15.4 WPAN is reported, consuming 21 mW in receive …

Microstrip antennas inherently have a high input impedance at resonant frequency. This
may not be convenient for some applications. For active integrated antennas, moreover, the …

A microstrip-fed circular ring slot antenna (CRSA) with a fundamental mode at 2.45 GHz is
initially studied. To suppress the additional harmonic modes excited by the ring slot, a single …

In this paper, the integrated-antenna concept is applied to push-pull power amplifiers (PAs).
In this approach, the antenna serves as an out-of-phase power combiner and tuned load for …

The disclosed invention relates to an antenna configuration that is configured to tune the
frequency of transmission without using filters. The antenna configuration comprises a …

This paper reviews recent progresses in the research and development of planar photonic
band-gap (PBG) structures, also called electromagnetic crystals, for microwave and …

In this paper, a full-wave numerical approach for the analysis and design of one-
dimensional (1-D) printed periodic structures is presented. Electromagnetic-bandgap …

Dispersion and radiation properties for bound and leaky modes supported by 1-D printed
periodic structures are investigated. A new type of Brillouin diagram is presented that …

A possible route for the design of 3-D metamaterials in the millimeter and terahertz (THz)
frequency range is proposed in this paper. It consists of stacks of spatial filtering screens …