A Center-Fed Planar Antenna Using A Surface/Leaky Wave,
Abstract
A new type of leaky-wave planar antenna for millimeter-wave applications is described. This low cost antenna is an alternative to microstrip arrays for which the transmission line losses seriously limit gain. The circularly polarized antenna uses a surface wave to feed perturbations over a planar dielectric aperture and thus, is not subject to transmission line losses. Also, conventional leaky-wave antennas are side or end fed, which inherently leads to beam scanning as the frequency is varied. This is due to an asymmetrical phase distribution and is undesirable for communication antennas. By center-feeding, the phase is symmetrical and the aperture radiates a broadside beam, the direction of which is independent of frequency.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 01, 1992
- Accession Number
- ADP007442
Entities
People
- J. Ladds
- S. Carrillo