Miniaturized RF components

Summary form only given. This talk presents several miniaturized RF components. The components reviewed are organized in two main categories, multi-band antennas and novel structures based on carbon nanotubes. Modern personal communication systems provide many services over several bands. They require antennas that are capable of operating over the desired frequencies. System designers may use any combination of conventional narrowband, wideband, multiband, and reconfigurable antennas. The antennas must meet stringent size and cost requirements. Multiband antennas are designed to meet an expansive range of services spanning over a wide spectrum, from about 800 MHz up to 6 GHz, and beyond, which is a challenging task. Several miniaturized antennas will be reviewed. Other miniaturized structures reviewed in this talk are envisioned to be based on carbon nanotubes. Since the discovery of carbon nanotubes in 1991, the material has been investigated in many applications. There are efforts to characterize all properties of material, which is a necessary step for exploring new potential applications. New interesting properties are reviewed, leading to miniaturization of devices such as filters and antennas which are important components in every RF front end. This talk reviews results of carbon nanotubes and assesses their potential for RF and microwave applications.