| 1. |
- Aziz, Imran, et al.
(författare)
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Broadband Fan-out Phased Antenna Array at 28 GHz for 5G Applications
- 2020
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Ingår i: Proceedings of the 50th European Microwave Conference. - 9782874870590 - 9782874870583 - 9781728170398 ; , s. 212-215
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Konferensbidrag (refereegranskat)abstract
- In this paper we present a 28 GHz antenna in package (AiP) design for 5G applications. The antenna array is placed in the fan-out region of the eWLB (enhanced Wafer Level Ball Grid Array) package. Separate antenna arrays are used for TX and RX, which are placed on one of the two re-distribution layers (RDL) inside the package. The heatsink required for the chip operation is also used as a horn antenna to improve the design performance. The 4-element dipole array has the impedance bandwidth of almost 6 GHz (24 GHz-30 GHz) and gives a maximum gain of 9.5 dBi. Beam-steering in ± 35 deg is achieved in the azimuthal plane (H-plane) by providing different phases to the dipoles through the chip.
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| 3. |
- Aziz, Imran, et al.
(författare)
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28 GHz Circular Polarized Fan-out Antenna Array with Wide-angle Beam-steering
- 2022
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Ingår i: International Journal of RF and Microwave Computer-Aided Engineering. - : Hindawi Publishing Corporation. - 1096-4290 .- 1099-047X. ; 32:3
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Tidskriftsartikel (refereegranskat)abstract
- The article presents 28 GHz circular polarized antenna arrays designed in an embedded wafer level ball grid array (eWLB) package for 5G applications. The antenna arrays are realized on a re-distribution layer (RDL) in the fan-out region of the chip package. Two separate but identical arrays perform RX and TX operations where a crossed dipole is used as a building block of the array. These 4-element arrays have <−10 dB impedance bandwidth covering 25.3–29.8 GHz (4.5 GHz bandwidth) while presenting 10 dBi maximum realized gain. The measurement results show <3 dB axial ratio in the band 26–29.5 GHz, and the main beam can be steered in ±50° in the azimuth plane when array elements are fed by appropriate phases from the chip. The radio frequency module provides 31 dBm maximum equivalent isotropic radiated power (EIRP).
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| 4. |
- Aziz, Imran, et al.
(författare)
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28 GHz compact dipole antenna array integrated in fan-out eWLB package
- 2022
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Ingår i: International journal of microwave and wireless technologies. - : Cambridges Institutes Press. - 1759-0795 .- 1759-0787. ; 14:10, s. 1369-1377
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Tidskriftsartikel (refereegranskat)abstract
- In this paper, we present a 28 GHz antenna array in package which covers the n257 and n258 frequency bands designated for 5G applications. The dipole antenna array is placed on one of the two re-distribution layers in the fan-out eWLB (embedded Wafer Level Ball Grid Array) package. For TX and RX, separate but identical antenna arrays are placed on each side of the die. The paper presents a novel horn-shaped heatsink which not only dissipates the heat, but also improves the radiation performance. The four-elements dipole array has the impedance bandwidth of almost 6 GHz (24–30 GHz) and shows a maximum realized gain of 9.5 dBi. Beam-steering in ± 35 deg is achieved in the azimuth plane (H-plane) by providing different phases to the dipoles through the chip. The measurements nicely agree with the simulation results.
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| 5. |
- Aziz, Imran, et al.
(författare)
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60 GHz compact broadband antenna arrays with wide-angle beam steering
- 2019
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Ingår i: The Journal of Engineering. - : INST ENGINEERING TECHNOLOGY-IET. - 2051-3305. ; :8, s. 5407-5414
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Tidskriftsartikel (refereegranskat)abstract
- Highly integrated multilayered printed circuit board-based patch antenna arrays are proposed in this study for 60 GHz wireless communications. Electromagnetic coupling between two stacked patches is used to achieve the broadband performance. Different structures of single element antennas, two-element antenna arrays and four-element antenna arrays are presented. The two compact four-element antenna arrays show < -10 dB impedance bandwidth of 13 and 14.6% with 12 dBi peak gain. The arrays have the 3 dB gain bandwidth of 9 and 13%. A single column, four-element sub-array is used to design 4 x 16 antenna array. This array delivers 20.8 dBi peak gain with 13% impedance and gain bandwidth. Furthermore, a two-element series fed array is used to realise a 2 x 16 phased antenna array. This array is fed through a 16 x channel radio frequency IC to achieve the beam steering in +/- 50 degrees range.
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| 6. |
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| 7. |
- Aziz, Imran, et al.
(författare)
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Connected Slots Antenna Array Feeding the High Gain Lens for Wide-angle Beam-steering Applications
- 2022
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Ingår i: International journal of microwave and wireless technologies. - 1759-0795 .- 1759-0787. ; 14:1, s. 77-85
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Tidskriftsartikel (refereegranskat)abstract
- This paper presents a 60 GHz connected slots linear-phased array feeding a high-gain semi-symmetric lens antenna. This design provides high gain, broadband, and beam-steering capabilities for gigabit rate access and backhaul communications. The connected slots antenna array (CSAA) is excited at 16× equidistant points which not only yields spatial power combining but also allows the progressive phase changes to steer the beam in ±45° in azimuth plane. To characterize the CSAA-fed lens antenna, four different power splitters are fabricated which steer the main beam in 0, 15, 30, and 45°. The lens is designed in a way to overcome the scan loss and get comparatively higher gain when beam is steered away from the broadside. The measured results show 25.4 dBi maximum gain with 3 dB gain bandwidth covering the full band 57–66 GHz whereas 3 dB beam-steering range is ±45° for all frequencies. Besides, the half power beamwidth is 6 and 10° in elevation (E-plane) and azimuth plane (H-plane), respectively.
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