Design and Extension of Modified Butler Matrix Based on Three-Way Directional Coupler and Its Multibeam Application

Han, Kangkang; Wei, Gao; Wang, Min; Qiu, Tiancheng

doi:10.1109/tcsii.2022.3222543

Cited by 3 publications

(2 citation statements)

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“…The HOMs suppression is achieved by placing a PTH near the vicinity of the CSRR loading. To date, fixed beam steering using Butler matrix circuit-based antennas is demonstrated 24 , 25 , even a modified cavity technique is reported to enhance the scan performance 26 by reducing the mutual coupling, and it is limited up to by the element size. The proposed array configuration uses a CSRR-loaded antenna element, which facilitates achieving a wide angle beam steering performance up to , at 3.45 GHz, 3.87 GHz respectively.…”

Section: Discussionmentioning

confidence: 99%

“…Few designs report the baffles shape with FSS and ferrite loading 22 , bent dipole embedded with two individual microstrip balun 23 , produces dual-band, dual-polarized 5G base station arrays. A butler matrix embedded antenna array 24 , demonstrates fixed beam steering up to . In 25 , a dual-band dual-polarized multi-beam antenna configuration is demonstrated for fixed beam steering.…”

Section: Introductionmentioning

confidence: 99%

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Dual-band dual-polarized sub-6 GHz phased array antenna with suppressed higher order modes

Barad,

Dash,

Sarkar

et al. 2024

Sci Rep

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This manuscript proposes a dual-band dual-polarized 64-element phased array antenna (PAA) with suppressed higher order modes (HoMs). Each array element is a microstrip patch structure with complementary split ring resonator (CSRR) loading, allowing for simultaneous dual-band and dual-polarization performance at 3.45 GHz and 3.87 GHz. The proposed PAA exhibits impedance matching of $$\le - 20$$ ≤ - 20 dB at 3.45 GHz and 3.87 GHz while limiting the mutual coupling below $$- 19$$ - 19 dB between the adjacent elements at both the operating bands. The proposed design includes a plated through hole placed near the CSRR loading to suppress any higher-order modes (HOMs). Two antenna prototypes, without and with HOMs suppression techniques are fabricated and measured. In addition, we demonstrate the beam steering of the proposed PAA up to $$\pm 60^0$$ ± 60 0 using an off-the-shelf 6-bit phase shifter module. The proposed 64 -element array achieves a gain of 23 dBi, and shows a minimal steering loss of $$\simeq 3$$ ≃ 3 dB over the steering angle.

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