Antenna currents for optimal Q, superdirectivity, and radiation patterns using convex optimization
Författare
Summary, in English
The high Q-factor (low bandwidth) and low efficiency make the design of small antennas challenging. Here, convex optimization is used to determine current distributions that give upper bounds on the antenna performance. Optimization formulations for maximal gain Q-factor quotient, minimal Q-factor for superdirectivity, and minimum Q for given far-field are presented. The effects of antennas embedded in structures are also discussed. The results are illustrated for planar geometries.
Publiceringsår
2012
Språk
Engelska
Publikation/Tidskrift/Serie
Technical Report LUTEDX/(TEAT-7216)/1-21/(2012)
Fulltext
Dokumenttyp
Rapport
Förlag
[Publisher information missing]
Ämne
- Electrical Engineering, Electronic Engineering, Information Engineering
Nyckelord
- Antenna theory
- Physical limitations
- Antenna Q
- Superdirectivity
- small antennas
- Convex optimization
Status
Published
Report number
TEAT-7216
Forskningsgrupp
- Electromagnetic theory