Optimal Antenna Currents for Q, Superdirectivity, and Radiation Patterns Using Convex Optimization

• 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 provide 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-fields are presented. The effects of antennas embedded in structures are also discussed. The results are illustrated for planar geometries.

Ämnesord

NATURVETENSKAP  -- Fysik (hsv//swe)

NATURAL SCIENCES  -- Physical Sciences (hsv//eng)

TEKNIK OCH TEKNOLOGIER  -- Elektroteknik och elektronik (hsv//swe)

ENGINEERING AND TECHNOLOGY  -- Electrical Engineering, Electronic Engineering, Information Engineering (hsv//eng)

Nyckelord

Antenna Q

antenna theory

convex optimization

physical limitations

small antennas

superdirectivity

Waves and Signals

Vågor och signaler

small antennas

convex optimization

Q-factor

Publikations- och innehållstyp

ref (ämneskategori)

art (ämneskategori)