The browser you are using is not supported by this website. All versions of Internet Explorer are no longer supported, either by us or Microsoft (read more here: https://www.microsoft.com/en-us/microsoft-365/windows/end-of-ie-support).

Please use a modern browser to fully experience our website, such as the newest versions of Edge, Chrome, Firefox or Safari etc.

Antenna matching for capacity maximization in compact MIMO systems

På svenska

Author

Summary, in English

As MIMO technology slowly matures, it is finding its way into more wireless applications. However, some important applications, including mobile communications, require compact implementations. One important challenge in miniaturizing MIMO systems for compact terminals is to overcome capacity performance degradation resulting from mutual coupling among closely separated antennas. In this contribution, we begin with a review of the state-of-the-art, with particular emphasis on impedance matching and its impact on capacity. Whereas it has been shown that a multiport extension of the conjugate match is optimum in a reference environment with uniform 3D angular power spectrum, its bandwidth is severely reduced by decreasing antenna separation. On the other hand, noncoupled, individual port matching is inherently simpler to implement and broader in bandwidth, but offers a smaller capacity. Here, we demonstrate that mean capacity can be easily maximized with respect to individual port matching in a given random field. The extent of capacity gains provided by the optimized matching network over existing individual port matching networks strongly depends on the propagation environment.

Publishing year

2006

Language

English

Pages

253-257

Publication/Series

3rd International Symposium on Wireless Communication Systems, ISWCS '06

Document type

Conference paper

Publisher

IEEE - Institute of Electrical and Electronics Engineers Inc.

Topic

  • Electrical Engineering, Electronic Engineering, Information Engineering

Keywords

  • compact MIMO systems
  • multiport extension
  • port matching
  • impedance matching
  • antenna separation
  • 3D angular power spectrum
  • antenna matching
  • mutual coupling
  • mobile communications
  • capacity maximization

Conference name

3rd International Symposium on Wireless Communication Systems (ISWCS)

Conference date

2006-09-06 - 2006-09-08

Conference place

Valencia, Spain

Status

Published

ISBN/ISSN/Other

  • ISBN: 978-1-4244-0397-4