Efficient Design of Tightly Coupled Dipole Array Using an Equivalent Circuit-Based Approach

Zhou, Wenyang; Chen, Yikai; Yang, Shiwen

doi:10.1109/access.2020.2966247

Cited by 14 publications

(10 citation statements)

References 31 publications

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“…He also showed that using negative inductance works best. A review of articles and books demonstrates that much has been done with both approaches [12][13][14][15][16][17][18][19][20][21]. To properly evaluate this issue, which can be a good guide for choosing the optimal structure in the design of broadband arrays, it is necessary to have a thorough analytical or numerical study of this issue.…”

Section: Introductionmentioning

confidence: 99%

Analysis of Connected Arrays and Capacitively Coupled Arrays

Hosseini

Atlasbaf²

2022

IEEE Access

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The concept of connected and capacitively coupled dipoles in a planar array, which improves wideband performance, is investigated. A long wire with multiple feeds acts as an array in connected arrays, whereas a capacitively coupled array uses capacitors between array elements. Both approaches attempt to approximate the current sheet of Wheeler. Using spectral Green's function, the array active impedance is calculated. The impedance mismatch of a connected/capacitively coupled dipole array is less than that of an array of unconnected dipoles of the same size. Both direct and capacitive connections can be used to design a wideband array antenna with a ground plane, although capacitive coupling performs better than a direct connection. This fact resulted from numerous analytical studies using infinite dipole array scan (active) impedance endorsed by full-wave simulations using CST MWS. The maximum mismatch losses over the frequency band for different source (reference) impedances are used to find the best solution at the broadside. To consider the scan performance, the average reflected power over all scan angles is applied, and then, the maximum average mismatch loss over the frequency band is investigated.

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Section: Introductionmentioning

confidence: 99%

Analysis of Connected Arrays and Capacitively Coupled Arrays

Hosseini

Atlasbaf²

2022

IEEE Access

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“…The wideband antenna array can be achieved by a wideband tightly coupled antenna array, [11][12][13][14][15][16][17][18][19][20][21][22][23] which can avoid the deterioration of radiation characteristics at high frequencies resulting from wide array spacing. At present, there are many achievements in wideband tightly coupled antenna array, mainly in the form of printed dipole.…”

Section: Introductionmentioning

confidence: 99%

Wideband tightly‐coupled dual‐line polarized P‐band antenna array with low‐profile lightweight metal structure

Sun

Wang

et al. 2021

Int J RF Mic Comp-Aid Eng

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In this article, an all-metal structure antenna array is proposed. The novel hollow-out structures are designed to achieve low profile and lightweight. The top structure of the element is also tightly coupled, once again lowering the antenna array profile. The overall size of the array is 1354.0 Â 1354.0 mm 2 , the spacing between elements is 323.0 mm. The optimized array-structure profile is only 0.12 λ 0 (λ 0 corresponds to the wavelength of 0.4 GHz). In addition, an excellent dual-line polarization radiation is achieved by using a crossstaggered arrangement. Both polarizations of the array have a cross-polarization-level of smaller than À30 dB. In order to verify the feasibility of the scheme, prototype processing and testing are carried out, and the test results are consistent with the simulation results. The frequency band covers the P-band (0.4-0.7 GHz). The active voltage standing wave ratios (VSWRs) are less than 2.0. In addition, the antenna array has favorable radiation characteristics.The measured realized gain varies from 14.7 to 19.6 dBi over the work band. The total antenna efficiency is higher than 83%. It can be applied to phased arrays for the satellite system and other broadband lightweight metal antennas.

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“…In recent years, the continuous current sheet concept has been extensively explored for antenna array developments 13‐15 . Based on this concept, different types of arrays have been proposed, including the connected arrays, 16 the planar ultra‐wideband modular antennas (PUMAs), 17‐19 and the tightly coupled dipole arrays (TCDAs) 20‐30 . The TCDA has emerged as an attractive candidate for ultra‐wideband and low‐profile applications.…”

Section: Introductionmentioning

confidence: 99%

“…However, these TCDAs are difficult to achieve more than a decade bandwidth. To further broaden the bandwidth, many kinds of resistive structures are introduced between dipole elements and the array ground plane, for example, resistive rings, 24‐27 resistive sheets (R‐Sheet), 28,29 and frequency selective surface (FSS) R‐Sheet 30 . In a word, the studies in References 20–30 are important for the profile reduction and bandwidth improvement of TCDAs.…”

Section: Introductionmentioning

confidence: 99%

“…To further broaden the bandwidth, many kinds of resistive structures are introduced between dipole elements and the array ground plane, for example, resistive rings, 24‐27 resistive sheets (R‐Sheet), 28,29 and frequency selective surface (FSS) R‐Sheet 30 . In a word, the studies in References 20–30 are important for the profile reduction and bandwidth improvement of TCDAs. However, to the best of authors' knowledge, most of the reported TCDAs have not considered their integration with low‐volume PCN.…”

Section: Introductionmentioning

confidence: 99%

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An active,ultra‐wideband dual‐polarizedtightly coupled dipole subarray for satellite communication

Chen

Wang

et al. 2021

Int J RF Microw Comput Aided Eng

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How to integrate the tightly coupled dipole array (TCDA) with tile‐based power combination network (PCN) has never been discussed in literatures. However, it is a critical issue should be resolved for TCDA's compact design. This article investigates a crucial front‐end component—8 × 8 dual‐polarized tightly coupled dipole subarray (TCDSA)—for ultra‐wideband satellite communication (SATCOM). A tile‐based network architecture is proposed to realize a low‐volume active PCN for the TCDSA. Then, a vertical interconnection module is proposed to totally eliminate coaxial cables between antenna elements and the PCN. A prototype of the TCDSA is developed. The PCN is elaborately integrated with the antenna elements in a compact space within a total thickness of 2.0 cm. The overall height of the prototype is 206.6 mm (2.07λH), where λH is the wavelength at the high‐end operating frequency. The fabricated dual‐polarized prototype demonstrates a decade bandwidth of 0.3–3.0 GHz with low cross‐polarization levels (<−30.0 dB). Because of the compact structure and excellent performance, the developed TCDSA will find applications in future receiving systems for SATCOM.

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Efficient Design of Tightly Coupled Dipole Array Using an Equivalent Circuit-Based Approach

Cited by 14 publications

References 31 publications

Analysis of Connected Arrays and Capacitively Coupled Arrays

Analysis of Connected Arrays and Capacitively Coupled Arrays

Wideband tightly‐coupled dual‐line polarized P‐band antenna array with low‐profile lightweight metal structure

An active,ultra‐wideband dual‐polarizedtightly coupled dipole subarray for satellite communication

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