A Novel Integrated UWB–UHF One-Port Antenna for Localization and Energy Harvesting

Abstract

In this work a novel compact, single-port antenna combining both UWB and UHF bands is presented. This solution is proposed for next generation passive RFID tags, performing communication and localization through UWB technology and efficient energy harvesting in the UHF band, but it is also designed in order to keep compatibility with previous tags generations. The UWB communication is deployed by means of an Archimedean spiral topology, while energy harvesting at UHF is obtained by suitably extending the spiral outer arms, thus realizing a meandered dipole, without affecting the UWB behavior. The single-port architecture provides an overall size reduction, while preserving the radiation performance in both the operating bands. This solution allows a direct connection to future integrated UWB-UHF chips, to standard RFID chips, or to a diplexer for suitably combining the UWB and the UHF functionalities. A prototype of this new antenna, realized on a standard FR-4 substrate, is first presented to validate the proposed novel design. As a second step, the same architecture is scaled on a paper substrate in view of its fully eco-compatible realization to be exploited by future pervasive RFID applications. The compact design of the antenna feeding network in discrete technology is also presented.Index Terms-Ultra wideband antennas, UHF antennas, rectennas, radiofrequency energy harvesting, radiofrequency identification.

Micropower Design of an Energy Autonomous RF Tag for UWB Localization Applications

“…The tag is equipped with an UHF port, used for power harvesting and addressing, and an UWB RF port, used for localization purposes. It is worth mentioning that UHF and UWB antennas can be integrated in a single structure, as in [8]. Power incoming from the UHF port is rectified and converted into a DC form, which is managed by the on-board regulated DC/DC converter, which supplies tag circuitry when sufficient power is available and performs the maximum power point tracking (MPPT) of the RF source.…”

Dual‐output quasi‐Yagi antenna for out‐of‐band RF energy harvesting

“…However, if the power splitter is a frequency-independent device, there will be losses of useful power in the system. As a solution, the authors in [19][20][21] proposed the design of a single antenna for SWIPT system with out-of-band energy harvesting. The system combines a single-port antenna and a diplexer to operate in the European UWB and UHF bands, for communication/ localisation and energy harvesting purposes, respectively.…”

A Wideband Microstrip Patch Antenna with Integrated Circular Slot for RF Energy Harvesting

“…Wi-max is for the WAN(wide area network) and is much faster, WAN connects several LANS (local area network).The RF signal range from 3KHz to 300GHz be the source or medium to any radio frequency harvesting system. RFEH have found their applications in forms like wireless charging system, wireless sensor network etc [6]- [9]. RF energy harvest home technique relies on the extracting energy from close that is EM waves radiated from completely different sources of communication [3].…”