An Integrated Radar Tile for Digital Beamforming X-/Ka-Band Synthetic Aperture Radar Instruments

Arnieri, Emilio; Boccia, Luigi; Amendola, Giandomenico; Glisic, Srdjan; Mao, Chunxu; Gao, Steven; Rommel, Tobias; Penkala, Piotr; Krstić, Miloš; Yodprasit, Uroschanit; Ho, Anselm; Schrape, Oliver; Younis, Marwan

doi:10.1109/tmtt.2018.2889038

Cited by 16 publications

(7 citation statements)

References 13 publications

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“…To reduce the complexity of the system, the X/Ka-band radiation elements, RF circuits and MIMCs are integrated into a single RF board. A detailed description and experimental validation of a single antenna tile of the RF board is provided in [6, 7] and will be not repeated here. Figure 3 shows the manufacture RF board.…”

Section: Radar Architecturementioning

confidence: 99%

“…Two preliminary tests have been performed to characterize separately the analog and the digital parts of each channel. The analog part has been tested considering a single tile of the RF board, results are described in our previous papers [6, 7] and will be not repeated here. In this paper, the digital part has been tested removing the RF board and testing the sub-channel composed by the ADC board + digital board.…”

Section: Measurementsmentioning

confidence: 99%

“…For each polarization, the input signal was generated with a vector network analyzer and radiated with linearly polarized X- or Ka-band horn antennas. Isolation between the two polarizations is higher than 25 and 30 dB at Ka and X-band, respectively [7]. The coupling between the two bands is lower than 35 dB as two different radiator typologies are adopted in the different bands as in [11].…”

Section: Measurementsmentioning

confidence: 99%

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Channel characterization of a dual-band dual-polarized SAR with digital beamforming

Arnieri

Boccia

Amendola

et al. 2020

Int. J. Microw. Wireless Technol.

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This paper presents the integration and channel characterization of a highly integrated dual-band digital beamforming space-borne synthetic aperture radar (SAR) receiver. The proposed SAR sensor is a low-cost, lightweight, low-power consumption, and dual-band (X/Ka) dual-polarized module ready for the next-generation space-borne SAR missions. In previous works, by the authors, the design and experimental characterization of each sub-system was already presented and discussed. This work expands upon the previous characterization by providing an exhaustive experimental assessment of the fully integrated system. As it will be shown, the proposed tests were used to validate all the instrument channels in a set-up where the SAR sensor was illuminated by an external source minim the ground reflected waves. Test results demonstrate how the system channels are properly operating allowing the reception of the input signals and their processing in the digital domain. The possibility to easily implement a calibration procedure has also been validated to equalize, in the digital domain, the unavoidable amplitude differences between the different channels.

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Section: Radar Architecturementioning

confidence: 99%

Section: Measurementsmentioning

confidence: 99%

Section: Measurementsmentioning

confidence: 99%

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Channel characterization of a dual-band dual-polarized SAR with digital beamforming

Arnieri

Boccia

Amendola

et al. 2020

Int. J. Microw. Wireless Technol.

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“…Finally, antennas should support two polarizations [13], [14]. Therefore, antenna modules for the 5G high-band require highly integrated and complex architectures [15] where three are key elements: i) the RF Integrated Circuits (IC) supporting beamforming, signal amplification and frequency translation functions, ii) the antenna array elements, and iii) the integration and packaging technology which plays a crucial role in driving the final cost and form factor of the antenna modules. Heterogeneous integration approaches are generally employed to implement such type millimeter wave systems [16].…”

Section: Introductionmentioning

confidence: 99%

Dual-Polarized Magneto-Electric Dipole for 5G 28-GHz Phased Array Applications

Scalise,

Arnieri,

Amendola

et al. 2024

IEEE Open J. Antennas Propag.

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A low-profile dual-polarized magneto electric (ME) dipole antenna configuration implemented on standard multilayer PCB technology is here reported. The proposed radiator is conceived for dual-polarized 28 GHz 5G phased array applications. Wideband operation is achieved by applying several low-frequency techniques which allow to fulfil the 5G requirements without increasing the dielectric core thickness. A 4 × 8 ME-dipole phased array is then designed, fabricated, and tested. The measured beam scanning range without the blindness in the E-plane is ±55° for the vertical polarization. Stable radiation patterns and a gain of up to 22 dBi are also achieved. The thickness of the antenna layers is significantly lower with respect to the other configurations in the literature while providing similar performance. Having reduced the antenna core thickness results in a structurally balanced stack-up, lighter and easier to fabricate with high yield. In addition, high isolation between the elements allows superior beam scanning performances. The proposed design is well suited to both packaging technologies and standard PCB processes and is an attractive candidate for the millimeter-wave applications in the fifth generation (5G) mobile systems.INDEX TERMS 5G mobile communication, Dipole antennas, Phased arrays, Steerable antennas.

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“…In 5G beamforming or precoding, three different schemes can be classified, i.e., analog, digital and hybrid based on the adopted hardware architectures [6][7][8][9][10]. In analog beamforming [6], it is conducted at the radio frequency (RF) via the phase shifters and attenuators.…”

Section: Introductionmentioning

confidence: 99%

Low Computational Complexity Precoding Selection for 5G New Radio

Huang

Wang

2023

Preprint

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In the fifth generation (5G) new radio (NR) wireless communication system, using Multiple Input Multiple Output (MIMO) system for signal transmission and reception of the millimeter wave frequency band can effectively improve the data rate performance and the received signal quality. Besides, precoding is an important method of beamforming in MIMO transmission. With the properly selected precoding matrices, transmitter and receiver can adjust the transmitting and receiving behaviors in accordance with the changes of the current channel state to reduce the interferences between users and increase the received signal strength. In this paper, a low complexity precoding selection method is proposed based on the steering angle characteristics of the precoding matrices of 5G NR. Besides, we used the software defined radio to implement the precoding selection following the requirement of the specifications of 5G. With this implementation, both transmitter and receiver can determine the suitable precoding matrices according to different precoding selection methods. Results showed that with a little error vector magnitude performance degradation, the proposed precoding selection method can reduce at least 50% of the required computational complexity of the full search method.

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An Integrated Radar Tile for Digital Beamforming X-/Ka-Band Synthetic Aperture Radar Instruments

Abstract: The version in the Kent Academic Repository may differ from the final published version. Users are advised to check http://kar.kent.ac.uk for the status of the paper. Users should always cite the published version of record.

Cited by 16 publications

References 13 publications

Channel characterization of a dual-band dual-polarized SAR with digital beamforming

Channel characterization of a dual-band dual-polarized SAR with digital beamforming

Dual-Polarized Magneto-Electric Dipole for 5G 28-GHz Phased Array Applications

Low Computational Complexity Precoding Selection for 5G New Radio

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