Thermal distortion compensation of a high precision umbrella antenna

Wang, Pengpeng; Wang, Feng; Shi, Tian; Wang, Bo

doi:10.1088/1742-6596/916/1/012051

Cited by 2 publications

(2 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The first three errors are constant errors which can be eliminated by in orbit calibrations. However, the thermal induced error changes with temperature distribution variation of the antenna and cannot be eliminated by in orbit calibration; thus in orbit depointing, compensation is crucial for high performance maintenance of satellite multibeam antennas [16,17].…”

Section: Introductionmentioning

confidence: 99%

Active Pointing Compensation of a HTS Multibeam Antenna

Wang,

Wang

2024

International Journal of Aerospace Engineering

Self Cite

View full text Add to dashboard Cite

Active pointing compensation of a High Throughput Satellite (HTS) multibeam antenna via microfiber composites (MFCs) is studied in this paper. Electrical-mechanical coupling analysis of MFCs is conducted to quantitatively determine driving forces and moments of MFCs attached on a carbon fiber reinforced composite (CFRP) laminate, and a positive correlation relationship is observed for driving ability versus thickness of the laminate. By different driving strategies, MFCs could act in bending mode and torsioning mode for structural deformation control, and driving efficiency of the MFCs on a multibeam antenna is studied. Thermal distortion of the antenna under a typical in orbit thermal distribution causes the reflector to rotate about y axis with an pointing error of 0.005°, active compensation is conducted, and the final compensation results show that with an optimal voltage of 432 V, pointing error of the antenna is greatly compensated, and the depointing angle is corrected to be 0.00004°.

show abstract

Section: Introductionmentioning

confidence: 99%

Active Pointing Compensation of a HTS Multibeam Antenna

Wang,

Wang

2024

International Journal of Aerospace Engineering

Self Cite

View full text Add to dashboard Cite

show abstract

“…According to the existing studies, the surface accuracy of these antennas usually stays at the millimeter level [ 1 , 11 , 12 , 13 , 14 , 15 , 16 ], corresponding to the L-S operating frequency band. If adopting various delicate structures (such as an umbrella-type structure [ 17 , 18 , 19 , 20 ]) or sophisticated adjustment approaches [ 11 , 12 , 13 , 16 , 21 , 22 , 23 , 24 ], small-aperture CNAs are capable of achieving an accuracy of 0.3–1 mm, with which its maximum operating frequency can reach the Ka band. However, the requirement for antenna operating frequency has been increasing invariably, which has far exceeded the Ka band, and even increased to the terahertz band.…”

Section: Introductionmentioning

confidence: 99%

Configuration Investigation, Structure Design and Deployment Dynamics of Rigid-Reflector Spaceborne Antenna with Deviation-Angle Panel

Tan,

Liu,

Duan

et al. 2024

Sensors

View full text Add to dashboard Cite

Rigid-reflector spaceborne antennas (RRSAs) are well-suited for high-frequency application scenarios due to their high surface accuracy. However, the low stowing efficiency of RRSAs limits the aperture diameters and further deteriorates the electromagnetic (EM) performances in terms of gain, resolution and sensitivity. After conducting systematic feature analysis with respect to several typical RRSAs, we propose a novel type of RRSA to solve the aforementioned problems. Inspired by the pose adjustment process for a higher stowing efficiency of traditional RRSAs, we also propose a new segmentation scheme of a reflective surface consisting of a deviation-angle panel that facilitates a higher stowing efficiency. Based on this scheme, its corresponding folded configuration is implemented by combining Euler’s rotation theorem and the idea of parameter identification. In addition, we also compare the stowing efficiency of different schemes to verify the high stowing efficiency of the configuration. Finally, we perform mechanism/structure design and deployment dynamics to demonstrate that the antenna can be successfully deployed and exhibits excellent deployment quality. The results suggest that the proposed antenna possesses higher stowing efficiency than that of the same kind, with a stable deployment and interference-free process.

show abstract

Thermal distortion compensation of a high precision umbrella antenna

Cited by 2 publications

References 4 publications

Active Pointing Compensation of a HTS Multibeam Antenna

Active Pointing Compensation of a HTS Multibeam Antenna

Configuration Investigation, Structure Design and Deployment Dynamics of Rigid-Reflector Spaceborne Antenna with Deviation-Angle Panel

Contact Info

Product

Resources

About