Experimental verification of a dual band CP patch antenna using a biased YIG compound

Kampitaki, A.; Zervos, T.; Lazarakis, F.; Alexandridis, Antonis A.; Dangakis, K.; Fikioris, George; Varouti, E.; Σταμόπουλος, Δ.; Vardaxoglou, J.C.

doi:10.1109/lapc.2013.6711848

Cited by 5 publications

(2 citation statements)

References 7 publications

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“…7a, which featured BWs of 3.3% and 2.8% at −6 dB reflection. In these two bands, the biased MDA was circularly polarized [12], [13]. Efficiency was characterized in a 35% BW (4.2-6.0 GHz, m = 901).…”

Section: B Dual-band Circularly-polarized Biased Mdamentioning

confidence: 99%

“…The S 11 data produced by multiband and/or circularly polarized magneto-dielectric antennas (MDAs) built on externally biased ferrimagnetic compounds [12], [13] are such that almost none of the above PPAs can extract their true efficiency. The complementary Q-factor method (CQFM) [10], [11], is able to characterize the efficiency of multiband and/or CP antennas, but it is sensitive to the size of the cavity.…”

Section: Introductionmentioning

confidence: 99%

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Efficiency measurements of multiband and circularly polarized magneto-dielectric antennas by the equivalent-circuit wheeler cap

Kakoyiannis

Zervos

Fikioris

et al. 2014

The 8th European Conference on Antennas and Propagation (EuCAP 2014)

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Accurate Wheeler cap measurements, either in a narrow or a wide band, are critically affected by the postprocessing method employed to deduce efficiency values from raw data. Stringent cases like multiband or circularly polarized (CP) antennas cannot be handled accurately by typical postprocessing methods, but lend themselves to post-processing based on equivalent circuits. This paper revisits the equivalent-circuit Wheeler cap (EC-WCap) and modifies all steps of the algorithm, thus significantly enhancing its simplicity and speed, while maintaining a wideband measurement capacity. This enhancement of EC-WCap was driven by the need to accurately characterize multiband CP magneto-dielectric antennas built on externally biased ferrimagnetic compounds, which resist characterization by other Wheeler-cap-related post-processing methods.

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Section: B Dual-band Circularly-polarized Biased Mdamentioning

confidence: 99%