Numerical study and experimental validation of a four-way feeding network with 45 deg broadband phase shifts for antenna array applications

Jia-Lin Li; Bao-Guo Yu

doi:10.2478/jee-2019-0072

Abstract

A four-way network with 45 deg output phase shifts for feeding antenna array is studied in this work. To widen the phase imbalance, quarter wavelength short stubs with suitable characteristic impedances are introduced and numerically analyzed. Meanwhile, the wideband magnitude imbalance is also discussed by extending the inter-stage transmission line with proper electric length. The study is further confirmed by developing a prototype feeding network centered at 3 GHz. Results from the fabricated prototype network exhibit wideband good performance, both from numerical evaluations and experimental demonstrations.

References

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Numerical study and experimental validation of a four-way feeding network with 45 deg broadband phase shifts for antenna array applications

Abstract

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