A Low Sidelobe Double-Layer Corporate-Feed Array Antenna by Inverted Micro strip Gap Waveguide at 28 GHz
Paper i proceeding, 2019

In this work, a novel low sidelobe array antenna is designed at 28 GHz. The proposed array antenna is fed by classic full-corporate double-layer distribution networks based on newly introduced inverted microstrip gap waveguide. In order to achieve low sidelobe property, a classic Taylor synthesis method is adopted in this work. In the distribution network, a couple of unequal power dividers with identical output phases are applied for the low sibelobe in this work. The fundamental radiator is 2 x 2 slot sub-array, and the entire array antenna is constructed by 8x8 of such kind sub-arrays. The simulated radiation patterns show that the first sidelobe levels, front-back ratio of both E-plane and II-plane from 26.5 GHz to 29.5 GHz are very well improved compared with traditional ones with the equal amplitude and phase distribution networks. The input impedance bandwidth is about 12% with the reflection coefficient below-10 dB, and the gain is more than 29 dBi from 26.5 GIlz to 29.5 GHz.

Taylor synthesis

array antenna

low sidelobes and unequal power dividers with identical output phases

Inverted microstrip gap waveguide

Författare

Jinlin Liu

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Antennsystem

Ashraf Uz Zaman

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Antennsystem

Jian Yang

Chalmers, Elektroteknik, Kommunikations- och antennsystem, Antennsystem

2019 INTERNATIONAL SYMPOSIUM ON ANTENNAS AND PROPAGATION (ISAP 2019)

International Symposium on Antennas and Propagation (ISAP)
Xian, China,

Ämneskategorier

Telekommunikation

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Senast uppdaterat

2020-07-22