Abstract
We review a free parameter in the design of Fresnel zone plate lens antennas. Historically, zone plate antennas have been designed with a specific choice for this parameter, which can be taken as a type of phase reference. Two methods of interpreting the parameter have been identified, either in terms of a reference radius or equivalently a reference phase. Here, for simplicity, we treat this variable parameter as a reference phase. Importantly, the reference phase can be chosen to have non-standard values which have been shown to improve important aspects of antenna performance and to add a new functionality to zone plate antennas.
Original language | English |
---|---|
Pages (from-to) | 801-822 |
Number of pages | 22 |
Journal | Journal of Infrared, Millimeter, and Terahertz Waves |
Volume | 32 |
Issue number | 6 |
DOIs | |
Publication status | Published - Jun 2011 |
Externally published | Yes |
Keywords
- Antenna
- Diffraction
- FDTD
- Fresnel zone plate
- Reference phase
ASJC Scopus subject areas
- Electrical and Electronic Engineering
- Condensed Matter Physics
- Radiation
- Instrumentation