Institut for Forretningsudvikling og Teknologi

Ramjee Prasad

Explore the Capability of ESPAR Antennas for Low Cost Communication

Publikation: KonferencebidragPaperForskningpeer review


  • Bo Han, Danmark
  • A Kalis, Grækenland
  • C. Papadias, Grækenland
  • Rasmus Hjorth Nielsen, Danmark
  • Ramjee Prasad
ESPAR antenna systems are composed of one active and several parasitic elements and by changing the characteristic of the parasitic elements on the antenna, the radiation pattern will also change. Such characteristic makes ESPAR antenna useful in many applications, e.g., single RF MIMO transmission. However, for higher modulation schemes like 16-QAM, more radiation patterns are needed which require a wider control range on the parasitic antenna load. In order to explore the capability of ESPAR antennas, negative resistance was proposed, but their values cannot be easily controlled both on the real and imaginary part. So a matching network is required to control the load value. This paper presents an idea of adjusting the parasitic ESPAR antenna loads with controllable passive elements. According to simulation, the control circuit consumes less than 1mW power on 64 patterns selection, which explores the capacity of ESPAR antenna for high order modulation applications.
Udgivelsesår25 apr. 2012
Antal sider4
StatusUdgivet - 25 apr. 2012
Eksternt udgivetJa
BegivenhedThe 28th Conference on Technologies and Visions for a Sustainable Wireless Internet - Athens, Grækenland
Varighed: 23 maj 201125 maj 2011


KonferenceThe 28th Conference on Technologies and Visions for a Sustainable Wireless Internet

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