Design of an Electronically Continuous Tunable Phased Array Antenna
DOI:
https://doi.org/10.13052/2026.ACES.J.410405Keywords:
Circularly polarized, phased array antenna, right hand circular polarization (RHCP), side lobe level (SSL), unequal power dividerAbstract
In this paper, an electronically continuous tunable phased array antenna is proposed, which integrates a 1-port to 4-ports unequal power divider, four electronically continuous tunable phase shifters, and a 4×3 right hand circularly polarized patch array antenna. The unequal power divider is designed with a power ratio of 1:2.25:2.25:1 to achieve a side-lobe level suppression of 20 dB. The phase shifters provide electronically linear and continuously tunable phase control within ±180∘. Their phase difference can be easily controlled by adjusting the direct current voltage. The array antenna consists of 12 hexagon patches, providing right hand circular polarization within the operating bandwidth and achieving a high gain of 13.68 dB. Furthermore, the proposed phased array antenna is capable of continuously steering the main beam over a range of −50∘ to 55∘ in the Y-Z plane at 3 GHz. Finally, the measurement results show good agreement with the simulations, confirming that the proposed electronically continuous tunable phased array antenna exhibits excellent performance.
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References
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