Design of multi-antenna feeding for MIMO terminals based on characteristic modes

Zachary Miers, Hui Li, Buon Kiong Lau

Forskningsoutput: Kapitel i bok/rapport/Conference proceedingKonferenspaper i proceedingPeer review

441 Nedladdningar (Pure)

Sammanfattning

Conventional antennas in single-antenna terminals that resonate at frequencies lower than 1 GHz usually rely on the chassis as the main radiator. To effectively exploit chassis excitation for MIMO terminals, each of the multiple antennas is required to excite one distinct chassis mode. However, in today's terminals, there is typically only one chassis mode that can radiate efficiently at frequencies below 1 GHz. Fortunately, it has been shown that minor modifications in the chassis structure can cause more than one mode to resonate at these frequencies. Nevertheless, proper antenna feeding methods are needed to practically tap into these modes. In this paper, we propose a general technique to feed orthogonal chassis modes of a given conducting structure using the theory of characteristic modes. By separating a radiating structure into individual modal currents, the near field radiating properties are exploited for capacitive or inductive feeding without significant coupling to other orthogonal modes of radiation. As a proof of concept, we apply the technique to feed a modified terminal chassis that has two significant characteristic modes at 0.89 GHz.
Originalspråkengelska
Titel på värdpublikationIEEE International Symposium on Antennas and Propagation, 2013
FörlagIEEE - Institute of Electrical and Electronics Engineers Inc.
Sidor182-183
Antal sidor2
ISBN (elektroniskt)978-1-4673-5317-5
DOI
StatusPublished - 2013
EvenemangIEEE International Symposium on Antennas and Propagation, 2013 - Lake Buena Vista, FL, USA
Varaktighet: 2013 juli 72013 juli 13

Publikationsserier

Namn
ISSN (tryckt)1947-1491
ISSN (elektroniskt)1522-3965

Konferens

KonferensIEEE International Symposium on Antennas and Propagation, 2013
Land/TerritoriumUSA
OrtLake Buena Vista, FL
Period2013/07/072013/07/13

Ämnesklassifikation (UKÄ)

  • Elektroteknik och elektronik

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