A planar reconfigurable focal plane array antenna for 24 GHz

Publikationstyp
Conference Paper
Date Issued
2016-08-09
Sprache
English
Author(s)
Sporer, Michael  
Weigel, Robert  
Kölpin, Alexander  orcid-logo
TORE-URI
http://hdl.handle.net/11420/6601
Journal
IEEE MTT-S International Microwave Symposium digest  
Volume
2016-August
Article Number
7540286
Citation
IEEE MTT-S International Microwave Symposium Digest (2016-August): 7540286 (2016-08-09)
Contribution to Conference
IEEE MTT-S International Microwave Symposium, 2016  
Publisher DOI
10.1109/MWSYM.2016.7540286
This paper presents a reconfigurable focal plane array (FPA) for lens or reflector based antenna systems in the 24 GHz ISM band. The FPA consists of five equal uniformly-spaced antenna elements with switchable polarization, fabricated on a four layer substrate using conventional low-cost PCB technology. For compactness and increased bandwidth, the design is based on aperture-coupled patch radiators on top of the substrate, each embedded in a cavity in order to reduce mutual coupling. Feeding is done by means of two orthogonal H-shaped slots which are excited by microstrip transmission lines etched on the bottom layer. A discrete pin-diode single pole, double throw (SPDT) switch directly below the patch allows for polarization control and facilitates a compact element size of 10mm × 10mm including the cavity walls. Another discrete pin-diode SP5T switch allows the selection of one of the five FPA elements at a time.
Subjects
aperture coupling
focal plane array
pin-diode switches
polarization control