A Compact Lenslet as an Alternative to Corrugated Horns for Astronomy Applications
- Resource Type
- Conference
- Authors
- Polo-Lopez, Lucas; Pisano, Giampaolo; Ruiz-Cruz, Jorge A.; Corcoles, Juan
- Source
- 2018 48th European Microwave Conference (EuMC) Microwave Conference (EuMC), 2018 48th European. :424-427 Sep, 2018
- Subject
- Aerospace
Communication, Networking and Broadcast Technologies
Components, Circuits, Devices and Systems
Fields, Waves and Electromagnetics
Power, Energy and Industry Applications
Signal Processing and Analysis
Transportation
Metamaterials
Permittivity
Antenna radiation patterns
Lenses
Horn antennas
Apertures
Dielectrics
metamaterials
lenses
horn antennas
radio astronomy
- Language
In this work a new compact lenslet is proposed for the W-band, in the context of embedded mesh technology for engineering the dielectric involved in the manufacturing. This lenslet is designed to be fed directly by a circular waveguide and produces a Gaussian beam with sidelobes at −10dB/−15dB and cross-polarisation below −20dB, with the advantage of having a much shorter device than classical corrugated horns for astronomy applications. The concept of the lenslet is presented, and then the design process is explained and elucidated with a numerical example.