High-Efficiency and Broadband Surface-Mount Antenna Array Concept and Prototype

Lippoldt, Max; Hesselbarth, Jan

doi:10.1109/lawp.2020.3004809

Cited by 2 publications

(2 citation statements)

References 5 publications

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“…Thus, the coolant temperature can be 30 • C above the ambient before the RFIC overshoots the typical maximum temperature. 16 RFICs increased the coolant temperature by 3.3 • C (Fig. 16a).…”

Section: Back Pressurementioning

confidence: 99%

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Scalable 3-D-Printable Antenna Array With Liquid Cooling for 28 GHz

Haarla

Ala‐Laurinaho

Viikari

2023

IEEE Trans. Antennas Propagat.

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This paper presents a scalable and compact 3Dprinted Vivaldi antenna array with liquid cooling for the frequency band from 24.0 to 29.5 GHz. The proposed design consists of an 8 × 8 antenna array with commercial beam-forming ICs on the antenna-side of the PCB for efficient PCB area utilization and that enables a high integration level. Scalable liquid cooling is integrated into the 3D-printed antenna array. The measured temperature with water cooling during operation remains below 50 • C. The simulated total active reflection coefficient of the unit cell is lower than -9.6 dB for beam steering angles up to 57 • from the broadside. The effective isotropic radiated power (EIRP) of the prototypes is up to 59.7 dBm.

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Section: Back Pressurementioning

confidence: 99%

“…The concept of locating RFICs on the antenna side of the PCB while retaining the cooling on the backside has been introduced but was demonstrated at a lower frequency [15], [16]. This simplifies the RF routing but introduces restrictions to the cooling capability since heat is conducted through the PCB.…”

Section: Introductionmentioning

confidence: 99%

Scalable 3-D-Printable Antenna Array With Liquid Cooling for 28 GHz

Haarla

Ala‐Laurinaho

Viikari

2023

IEEE Trans. Antennas Propagat.

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Broadband All-Metal Vivaldi Array Antenna with Pyramidal-Shaped Wings for LEO Satellite Applications

Jang,

Lim,

Park

et al. 2023

J. Electromagn. Eng. Sci

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In this paper, we propose an all-metal Vivaldi antenna with pyramidal-shaped conductive wings for use in satellite signal intelligence applications. The inner metal Vivaldi antenna consists of radiating flares and a transition part between the feeder and the flares. The curvature of the inner flares is optimized, while the outer edges of the radiating flares are connected to the pyramidal-shaped wings to obtain a higher antenna gain over the entire operating frequency band. To verify the antenna’s feasibility, performance aspects such as the reflection coefficient, the radiation patterns, and the boresight gain are measured in a full anechoic chamber. The fractional bandwidth of the proposed antenna is 54%, while the boresight gain is greater than 7.3 dBi in the frequency range from 8 GHz to 12 GHz. To examine array performance aspects such as the total gain and beam steering, the proposed Vivaldi antenna is extended to a 4 × 1 linear array configuration. When the main beam is steered from 0° to 15°, the maximum gain is varied from 14.5 dBi to 13.7 dBi, while the side lobe level is decreased from 11.2 dB to 6.3 dB.

show abstract

High-Efficiency and Broadband Surface-Mount Antenna Array Concept and Prototype

Cited by 2 publications

References 5 publications

Scalable 3-D-Printable Antenna Array With Liquid Cooling for 28 GHz

Scalable 3-D-Printable Antenna Array With Liquid Cooling for 28 GHz

Broadband All-Metal Vivaldi Array Antenna with Pyramidal-Shaped Wings for LEO Satellite Applications

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