In this paper, it has been shown, how electronically steerable parasitic array radiator (ESPAR) antenna, in which beam steering is done in a simple way, can be used for directionof- arrival (DoA) estimation of an unknown signal impinging the antenna. The concept is based on an ESPAR antenna having twelve parasitic elements, in which beam switching is realized by RF switches providing required loads to its parasitic elements. Numerical simulations indicate, that, by recording ESPAR antenna’s output for different directions of its main beam and applying the DoA estimation algorithm introduced in [6] that relies on received signal strength (RSS) values only, one can obtain estimation errors at the similar level as for the ESPAR antenna with six parasitic elements and steering involving DSP-based controller. By simplifying the way the directional main beam is switched in ESPAR antennas and by using RSS-based DoA estimation algorithm, one makes DoA estimation possible for inexpensive wireless sensor networks (WSN) nodes.
Authors
Additional information
- Category
- Aktywność konferencyjna
- Type
- publikacja w wydawnictwie zbiorowym recenzowanym (także w materiałach konferencyjnych)
- Language
- angielski
- Publication year
- 2017
