MIMO Reference Antennas with Controllable Correlations and Total Efficiencies
2014 (English)In: Progress In Electromagnetics Research, ISSN 1070-4698, E-ISSN 1559-8985, Vol. 145, 115-121 p.Article in journal (Refereed) Published
MIMO reference antennas are proposed for over the air (OTA) measurement applications. The reference antennas could get rid of feeding cable interference and control envelope correlation coefficients (ECC) continuously by only changing the length of an etched slot on a dual-feed PIFA. If only the ECC is investigated, the MIMO reference antenna is optimized to have a small variation of total efficiency from 70% to 50% when the ECC increases from 0.1 to 0.88. The prototypes are fabricated and measured in a scattered field chamber (SFC). Measurements agree well with the simulations. If the MIMO performance is studied, the MIMO reference antenna is proposed to own a large variation of total efficiencies from 90% to 47% while the ECC increases from 0 to 0.98. The bandwidth of the proposed reference antennas depend on the size of the antennas. This method is valid for all the frequencies.
Place, publisher, year, edition, pages
2014. Vol. 145, 115-121 p.
Dual-feed, Envelope correlation coefficient, Over-the-air measurement (OTA), Reference antennas, Scattered field, Small variations, Total efficiency
Electrical Engineering, Electronic Engineering, Information Engineering Telecommunications
IdentifiersURN: urn:nbn:se:kth:diva-145101DOI: 10.2528/PIER14010507ISI: 000334450200011ScopusID: 2-s2.0-84896485524OAI: oai:DiVA.org:kth-145101DiVA: diva2:716447
QC 201405092014-05-092014-05-082014-05-09Bibliographically approved