Millimeter wave antenna for limb sounding application

Author

Padovan, G. ; Scouarnec, D. ; Jorgensen, R. ; Klooster, K. Van´t

Author_Institution

Matra Marconi Space, Paris, France

fYear

1993

fDate

1993

Firstpage

925

Abstract

The millimeter wave antenna study (MMWA) carried out under the ESTEC contract focused on antenna optimizations for a microwave limb sounding instrument for the middle atmosphere (10 to 100 km) which exploits four frequency bands, from 63 GHz for pressure retrieval up to 205 GHz for ozone. Six elliptical beams with ±0.3° scanning capability within the elevation plane were shown to be compliant with a tight beam efficiency specification of 96% inside the efficiency cone, defined by its apex angle to be 2.5 times the half-power beamwidth. Constant half-power beamwidths are needed within the frequency range with a 0.1° value within the elevation plane and the highest value possible within the azimuth plane. The feasibility study showed that a 2.5 axial ratio was acceptable from the antenna design point of view, leading to a dual reflector antenna

Keywords

atmospheric measuring apparatus; microwave antennas; microwave measurement; reflector antennas; 10 to 100 km; 63 to 205 GHz; EHF; MM wave antenna; MMWA; O₃; antenna design; apex angle; axial ratio; azimuth plane; beam efficiency; dual reflector antenna; efficiency cone; elevation plane; elliptical beams; frequency bands; half-power beamwidth; mesosphere; microwave limb sounding instrument; middle atmosphere; millimeter wave antenna; ozone; pressure retrieval; scanning; stratosphere;

fLanguage

English

Publisher

iet

Conference_Titel

Antennas and Propagation, 1993., Eighth International Conference on

Conference_Location

Edinburgh

Print_ISBN

0-85296-572-9

Type

conf

Filename

224770