Design of a microstrip antenna on Duroid 5870 substrate material for Ku and K-band applications

Abstract

Original scientific paper A microstrip antenna on Duroid 5870 substrate material has been presented for Ku and K-band applications in this paper. The proposed antenna has consisted of circular and rectangular slots printed on Duroid 5870 dielectric substrate material and excited by a 50 Ω microstrip transmission line. High frequency electromagnetic solver HFSS has been taken into account in this study based on the Finite Element Method (FEM). The antenna has generated two separate resonant frequencies to cover Ku and K-band. It has an impedance bandwidth (2:1 VSWR) of 1,11 GHz (16,14 ÷ 15,03 GHz) on the lower band and a bandwidth of 1,15 GHz (20,99 ÷ 19,84 GHz) on the upper band. It has achieved a stable omni-directional radiation pattern in the operating frequency band. The efficiency, current distribution, VSWR, return loss of the proposed antenna have been presented and discussed in detail. Keywords: Duroid 5870; K-band; Ku-band; microstrip antenna; microstrip line Dizajn mikrostrip antene na materijalu podloge Duroid 5870 za aplikacije Ku and K-pojasaIzvorni znanstveni članak U ovom je radu prikazana mikrostrip antena na podlozi Duroid 5870 za aplikacije Ku i K pojasa. Predložena se antena sastoji od kružnih i pravokutnih nizova tiskanih na dielektričnom materijalu podloge Duroid 5870, a pobuđuje ju 50 Ω mikrostrip dalekovod. HFSS elektromagnetski solver visoke frekvencije uzet u obzir u ovoj studiji temelji se na metodi konačnih elemenata (MKE). Antena generira dvije odvojene rezonantne frekvencije za pokrivanje Ku i K-pojasa. Ima područje impedancije (2:1 VSWR) od 1,11 GHz (16,14 ÷ 15,03 GHz) na donjem pojasu i širinu pojasa od 1,15 GHz (20,99 ÷ 19,84 GHz) na gornjem pojasu. Postigla je stabilan kružni dijagram zraćenja u operativnom frekvencijskom pojasu. Predstavljeni su i detaljno raspravljeni učinkovitost, raspodjela struje, VSWR te povratni gubitci predložene antene.

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