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Cooling System for a Ka Band Transmit Antenna Array

Döring, Björn (2006) Cooling System for a Ka Band Transmit Antenna Array. Diplomarbeit. DLR-Interner Bericht. DLR-IB 554-06/02, 70 S.

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Active antenna arrays working at higher frequencies result in higher packaging densities. The antenna array under consideration operates at about 30 GHz and will be installed in an aircraft. Commercially available power amplifiers at these frequencies have an efficiency of typically 20 %, which results in high amounts of dissipated heat for the required high radiated power. The dissipated power, up to 9.5 kW as a worst case for a 50 × 50 element array, has to be transfered from the antenna to a heat exchanger or to the ambient air. Several cooling techniques including forced air and liquid cooling as well as heat pipes will be presented in this work, always considering the packaging density and the little space available. Simulations based on the software Flotherm led to the result that a liquid cooled cold plate is the most feasible approach while meeting all requirements. Experiments on a simplified model and comparison with simulations confirmed the results. Additionally, a forced air convection fin heat sink based on standard components was proposed, which can be used for an antenna demonstration model with 4 × 4 elements.

Dokumentart:Berichtsreihe (DLR-Interner Bericht, Diplomarbeit)
Titel:Cooling System for a Ka Band Transmit Antenna Array
AutorenInstitution oder E-Mail-AdresseAutoren-ORCID-iD
Datum:Januar 2006
Referierte Publikation:Nein
In Open Access:Nein
In ISI Web of Science:Nein
Stichwörter:thermal modeling, cooling techniques, Ka Band, Antenna Array, forced convection, liquid cooling, heat pipes, aircraft
Institution:TU Berlin
Abteilung:Elektrotechnik und Informatik
HGF - Forschungsbereich:Luftfahrt, Raumfahrt und Verkehr
HGF - Programm:keine Zuordnung
HGF - Programmthema:keine Zuordnung
DLR - Schwerpunkt:Luftfahrt
DLR - Forschungsgebiet:L - keine Zuordnung
DLR - Teilgebiet (Projekt, Vorhaben):L - keine Zuordnung (alt)
Standort: Oberpfaffenhofen
Institute & Einrichtungen:Institut für Kommunikation und Navigation
Institut für Kommunikation und Navigation > Navigation
Hinterlegt von: Greda, Dr.-Ing. Lukasz
Hinterlegt am:06 Jun 2006
Letzte Änderung:12 Dez 2013 20:19

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