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Type: Journal article
Title: Comparison of the Radiation Efficiency for the Dielectric Resonator Antenna and the Microstrip Antenna at Ka Band
Author: Lai, Q.
Almpanis, G.
Fumeaux, C.
Benedickter, H.
Vahldieck, R.
Citation: IEEE Transactions on Antennas and Propagation, 2008; 56(11):3589-3592
Publisher: IEEE-Inst Electrical Electronics Engineers Inc
Issue Date: 2008
ISSN: 0018-926X
Statement of
Qinghua Lai, Georgios Almpanis, Christophe Fumeaux, Hansruedi Benedickter, and Ruediger Vahldieck
Abstract: The radiation efficiency of a dielectric resonator antenna (DRA) and a microstrip antenna (MSA) at Ka band is investigated numerically and experimentally. For direct comparison, one cylindrical DRA and one circular disk MSA were designed with similar feeding networks for operation at around 35 GHz. The efficiency of both devices was measured using the directivity/gain (D/G) method and the Wheeler cap method, in both of which the losses in the test system and the feeding structure were taken into account for calibration purposes. A good agreement between measured and simulated results for both methods is found, when considering the effect of the sampling interval and cross-polarization in the D/G method and the effect of the metallic cap size in the Wheeler cap method. It is finally demonstrated that the radiation efficiency of the DRA is significantly higher than that of the MSA at millimeter wave frequencies.
Keywords: Terms—Dielectric resonator antenna (DRA); microstrip antenna (MDRA); millimeter wave band; radiation efficiency.
RMID: 0020084089
DOI: 10.1109/TAP.2008.2005551
Appears in Collections:Electrical and Electronic Engineering publications

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