Pisano, Giampaolo  ORCID: https://orcid.org/0000-0003-4302-5681, Ng, M. W., Haynes, V. and Maffei, B.
2012.
A broadband photolithographic polariser for millimetre wave applications.
Presented at: PIERS 2012,
Kuala Lumpur, Malaysia,
27-30 March 2012.
PIERS Proceedings 2012.
The Electromagnetics Academy,
pp. 1747-1751.
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Abstract
Circular polarisers are used to convert linear- into circular-polarisation, and vice versa. This is achieved by introducing a phase-shift of 90± between two orthogonal polarisations passing through the device. These devices can be designed using slabs of birefringent mate- rial with the appropriate thicknesses (Quarter-Wave Plates). An interesting alternative solution consists of designing planar metallic grids with sub-wavelength geometries that exhibits di®er- ent behaviour along two orthogonal axes. In this work we present a broadband dielectrically embedded quasi-optical polariser built using photolithographic techniques. The device was ex- perimentally tested using a Vector Network Analyser working in W-band (75{110 GHz). The presented results are in excellent agreement with ¯nite-element analysis simulations: across a 30% bandwidth the transmission along the two axes and the very °at di®erential phase-shift are respectively: TC = 0:92, TL = 0:95 and ¢'LC = 89:3 § 1:5±
| Item Type: | Conference or Workshop Item (Paper) |
|---|---|
| Date Type: | Submission |
| Status: | Published |
| Schools: | Schools > Physics and Astronomy |
| Subjects: | Q Science > QB Astronomy |
| Publisher: | The Electromagnetics Academy |
| ISBN: | 9781934142202 |
| ISSN: | 1559-9450 |
| Related URLs: | |
| Last Modified: | 27 Oct 2022 08:31 |
| URI: | https://orca.cardiff.ac.uk/id/eprint/62568 |
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