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Relevant bibliographies by topics / Small aperture active phased array

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Journal articles

Academic literature on the topic 'Small aperture active phased array'

Author: Grafiati

Published: 6 September 2023

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Journal articles on the topic "Small aperture active phased array"

1

Lu, Junqi, and Yongxin Guo. "Compact Planar Sparse Array Antenna with Optimum Element Dimensions for SATCOM Ground Terminals." International Journal of Antennas and Propagation 2015 (2015): 1–11. http://dx.doi.org/10.1155/2015/806981.

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A novel antenna array architecture for low-cost and compact SATCOM mobile terminal is presented. Based on equal-amplitude aperiodic phased array with fewer active chain numbers, it possesses advantages including lower weight, less cost, and higher power efficiency compared to conventional periodic phased arrays. It is implemented with printed patch antenna so that it guarantees compactness. The elements position and dimensions are jointly designed, with an effective sparse array synthesis strategy that takes actual patch antenna design constraint into consideration, to obtain a maximum array a

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2

Shi, Wei, Zuping Qian, Jun Zhou, Xinbo Qu, Yang Xiang, and Liu Hong. "A Small Ku-Band Polarization Tracking Active Phased Array for Mobile Satellite Communications." International Journal of Antennas and Propagation 2013 (2013): 1–12. http://dx.doi.org/10.1155/2013/747629.

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A compact polarization tracking active phased array for Ku-band mobile satellite signal reception is presented. In contrast with conventional mechanically tracking antennas, the approach presented here meets the requirements of beam tracking and polarization tracking simultaneously without any servo components. The two-layer stacked square patch fed by two probes is used as antenna element. The impedance bandwidth of 16% for the element covers the operating frequency range from 12.25 GHz to 12.75 GHz. In the presence of mutual coupling, the dimensional parameters for each element of the small

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3

Luo, Xuan, Jun Ouyang, Zhihui Chen, Lei Han, and Wei Yan. "A Low-Profile 36-Element K-Band Active Phased Array for Ultra-Small Aperture Application." IEEE Access 8 (2020): 62286–97. http://dx.doi.org/10.1109/access.2020.2983604.

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4

Knott, Peter, Thomas Bertuch, Helmut Wilden, Olaf Peters, Andreas R. Brenner, and Ingo Walterscheid. "SAR Experiments Using a Conformal Antenna Array Radar Demonstrator." International Journal of Antennas and Propagation 2012 (2012): 1–7. http://dx.doi.org/10.1155/2012/142542.

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Conformal antenna arrays have been studied for several years but only few examples of applications in modern radar or communication systems may be found up to date due to technological difficulties. The objective of the “Electronic Radar with Conformal Array Antenna” (ERAKO) demonstrator system which has been developed at the Fraunhofer Institute for High Frequency Physics and Radar Techniques (FHR) is to demonstrate the feasibility of an active electronically scanned antenna for conformal integration into small and medium sized airborne platforms. For practical trials the antenna has been ada

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5

Liu, Rong, Naizhi Wang, Tong Li, Ruoqiao Zhang, and Hongchao Wu. "X-Band Active Phased Array Antenna Using Dual-Port Waveguide for High-Power Microwave Applications." Electronics 11, no. 23 (2022): 4064. http://dx.doi.org/10.3390/electronics11234064.

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An X-band active phased array horn antenna with high power capacity and high peak power is proposed in this paper. At the horn aperture, the baffles are loaded to suppress higher-order modes and eliminate blind spots during beam scanning. Straight walls are added to improve impedance matching. Considering that the peak power that T/R modules can provide is very limited, the proposal of a dual-port waveguide breaks through the bottleneck of the power capacity of a single-port input for the first time. The proposed curved dual-port waveguide is used to connect the horn antenna and the T/R module

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6

Krüger, Frank, Torsten Dahm, and Katrin Hannemann. "Mapping of Eastern North Atlantic Ocean seismicity from Po/So observations at a mid-aperture seismological broad-band deep sea array." Geophysical Journal International 221, no. 2 (2020): 1055–80. http://dx.doi.org/10.1093/gji/ggaa054.

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SUMMARY A mid-aperture broad-band test array (OBS array DOCTAR) was deployed from June 2011 to April 2012 about 100 km north of the Gloria fault in the Eastern North Atlantic in about 5000 m water depth. In addition arrays were installed on Madeira Island and in western Portugal mainland. For the first time in the Eastern North Atlantic, we recorded a large number of high frequency Po and So waves from local and regional small and moderate earthquakes (ML &lt; 4). An incoherent beamforming method was adapted to scan continuous data for such Po and So arrivals applying a sliding window wave

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7

Kim, Seok, Chan-Mi Song, Seung-Hun Lee, Sung-Chan Song, and Hyun-Ung Oh. "Design and Performance of X-Band SAR Payload for 80 kg Class Flat-Panel-Type Microsatellite Based on Active Phased Array Antenna." Aerospace 9, no. 4 (2022): 213. http://dx.doi.org/10.3390/aerospace9040213.

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The small synthetic aperture radar (SAR) technology experimental project (S-STEP) mission aims to develop an innovative spaceborne SAR microsatellite as a constellation of 32 microsatellites featuring a high-resolution stripmap mode of 1 m. The S-STEP is a spaceborne SAR microsatellite technology demonstration program in which innovative approaches have been proposed and investigated for SAR payload system designs for improving the development speed, affordability, size and weight parameters, and quality of SAR satellite systems. In this study, the major design approach includes a bus–payload

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8

Kojima, Yuki, Kazuo Oki, Kosuke Noborio, and Masaru Mizoguchi. "Estimating Soil Moisture Distributions across Small Farm Fields with ALOS/PALSAR." International Scholarly Research Notices 2016 (July 26, 2016): 1–8. http://dx.doi.org/10.1155/2016/4203783.

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The ALOS (advanced land observing satellite) has an active microwave sensor, PALSAR (phased array L-band synthetic aperture radar), which has a fine resolution of 6.5 m. Because of the fine resolution, PALSAR provides the possibility of estimating soil moisture distributions in small farmlands. Making such small-scale estimates has not been available with traditional satellite remote sensing techniques. In this study, the relationship between microwave backscattering coefficient (σ) measured with PALSAR and ground-based soil moisture was determined to investigate the performance of PALSAR for

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9

Morabito, Simona, Paola Cusano, Danilo Galluzzo, et al. "One-Year Seismic Survey of the Tectonic CO2-Rich Site of Mefite d’Ansanto (Southern Italy): Preliminary Insights in the Seismic Noise Wavefield." Sensors 23, no. 3 (2023): 1630. http://dx.doi.org/10.3390/s23031630.

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A passive seismic experiment is carried out at the non-volcanic highly degassing site of Mefite d’Ansanto located at the northern tip of the Irpinia region (southern Italy), where the 1980 MS 6.9 destructive earthquake occurred. Between 2020 and 2021, background seismic noise was recorded by deploying a broadband seismic station and a seismic array composed of seven 1 Hz three-component sensors. Using two different array configurations, we were allowed to explore in detail the 1–20 Hz frequency band of the seismic noise wavefield as well as Rayleigh wave phase velocities in the 400–800 m/s ran

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10

Govorčin, Marin, Boško Pribičević, and Shimon Wdowinski. "Surface Deformation Analysis of the Wider Zagreb Area (Croatia) with Focus on the Kašina Fault, Investigated with Small Baseline InSAR Observations." Sensors 19, no. 22 (2019): 4857. http://dx.doi.org/10.3390/s19224857.

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The wider Zagreb area is considered one of the few seismically active areas in the Republic of Croatia. During the period 1880–1906, moderate to strong seismic activity with three earthquakes magnitude M L ≥ 6 occurred on the NW-SE striking Kašina Fault and since then, the area has not experienced earthquakes exceeding magnitude M L = 5 . In order to estimate the ongoing interseismic strain accumulation along the fault, we analyze Advanced Land Observing Satellite (ALOS) Phased Array L-band SAR (PALSAR) and Environmental Satellite (Envisat)-Advanced Synthetic Aperture Radar (ASAR) datasets acq

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