A Compact Two-dimensional Power Divider for a Dielectric Rod Antenna Array Based on Multimode Interference

Reese, Roland; Tesmer, Henning; Jost, Matthias; Polat, Ersin; Nickel, Matthias; Jakoby, Rolf; Maune, Holger

doi:10.1007/s10762-018-0535-x

Cited by 14 publications

(13 citation statements)

References 2 publications

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“…In future, the array can be designed fully dielectric as such non-steerable rod antenna arrays are proposed in [3] and [4]. With this approach, very lightweight antenna arrays could be designed, since the waveguide power divider network can be omitted.…”

Section: E Antenna Measurementsmentioning

confidence: 99%

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Liquid Crystal Based Dielectric Waveguide Phase Shifters for Phased Arrays at W-Band

et al. 2019

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In this work, the feasibility of microwave liquid crystal based dielectric waveguide phased shifters is investigated in a phased rod antenna array for the first time. For this, a 1 × 4 rod antenna array is designed including the phase shifters as well as a cascaded E-plane power divider network. As core elements, the phase shifter are designed as continuously tunable subwavelength fibers, partially filled with a newly specifically synthesized microwave liquid crystal, exhibiting a maximum FoM 145 • /dB at 102.5 GHz. As proof-of-concept, a simplified electric biasing network is developed, demonstrating its beam steering capability by changing the scanning angle between 0 • , −25 • and +15 • with three different voltage distributions. The antenna array is well matched throughout the complete W-band with a input reflection below −10 dB. The measured antenna gain is between 11.5 to 9.1 dBi at 85 GHz accompanied with a side lobe level between −12 to −7 dB, depending on the steering configuration.INDEX TERMS Phased array, millimeter wave devices, microwave liquid crystal, dielectric waveguide.

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Section: E Antenna Measurementsmentioning

confidence: 99%

“…DWs and corresponding rod antennas have been presented as suitable antenna elements for phased arrays in [1]- [4].…”

Section: Introductionmentioning

confidence: 99%

Liquid Crystal Based Dielectric Waveguide Phase Shifters for Phased Arrays at W-Band

et al. 2019

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“…to achieve scanning in both E and H planes. Simplifying the feeding network by a dielectric one 38 would reduce the complexity of the prototype, enabling a finer control over the spacing between the elements. Finally, fabricating the whole system as one, e.g.…”

Section: Discussionmentioning

confidence: 99%

Single-walled carbon nanotube layers for millimeter-wave beam steering

2019

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“…Figure 9 depicts the model of the two-dimensional power divider with 16 output ports, proposed in [16], and its corresponding dimensions. Due to the symmetric design, it is sufficient to investigate four out of 16 output ports.…”

Section: × 4 Antenna Arraymentioning

confidence: 99%

“…In this manuscript the basic concept of MMI is reviewed, before its application as a power divider for antenna arrays is discussed, based on [15,16] and [17]. Both one-and two-dimensional antenna arrays are simulated, designed, realized and measured by using a low-loss dielectric with easy processing capabilities and a permittivity of % r = 2.53.…”

Section: Introductionmentioning

confidence: 99%

Fully Dielectric Rod Antenna Arrays with Integrated Power Divider

et al. 2019

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This paper presents an overview of fully dielectric antenna arrays with integrated dielectric power dividers developed at Technische Universität Darmstadt as an extension of previous work. The power dividers are based on the principle of multimode interference and offer one- and two-dimensional power division in a single step, which allows the realization of small and lightweight devices. In order to prove the concept, 1 × 4 and 4 × 4 fully dielectric antenna arrays with integrated power dividers milled from Rexolite are designed, realized and characterized, operating between 90 GHz and 105 GHz. To assess miniaturization and beamsteering capabilities, three 1 × 4 arrays composed of different materials, Rexolite, Preperm L300 and Preperm L440, are compared regarding gain, size, weight and element spacing. Depending on array size and material, gain is between 12.5 dBi and 22 dBi, accompanied with sidelobe levels below - 7.5. All demonstrators are realized by milling, but the designs show the potential to be 3D printed or injection molded for large scale manufacturing.

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A Compact Two-dimensional Power Divider for a Dielectric Rod Antenna Array Based on Multimode Interference

Cited by 14 publications

References 2 publications

Liquid Crystal Based Dielectric Waveguide Phase Shifters for Phased Arrays at W-Band

Liquid Crystal Based Dielectric Waveguide Phase Shifters for Phased Arrays at W-Band

Single-walled carbon nanotube layers for millimeter-wave beam steering

Fully Dielectric Rod Antenna Arrays with Integrated Power Divider

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