Innovative aperiodic arrays for SAR spaceborne applications

Luison, C.; Landini, A. J.; Angeletti, Piero; Toso, Giovanni; Valle, P.; Capece, P.; Selleri, Stefano; Pelosi, Giuseppe

doi:10.1109/array.2010.5613246

Cited by 7 publications

(9 citation statements)

References 4 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Apparently, the RX power in one particular direction maximised if the TX and RX power patterns in this direction are identical, as revealed in (7). Technically, the identicalness of complex power value does not guarantee the identity of original complex number due to the phase ambiguity.…”

Section: Quasi-optimum Tx and Rx Pattern Decompositionsmentioning

confidence: 99%

“…First is the large number of RF components that consume a lot of electrical energy, in both DC-RF conversion and heat dissipation. Sparse array with fewer active elements could be a possible solution and is widely studied [4][5][6][7][8]. The most critical drawback of the sparse array for space SAR application is that the antenna gain might degrade approximately proportional to the reduction of radiating element number.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

High‐power efficiency aperiodic phased array antenna for space‐borne SAR

Yang

Liu

et al. 2018

IET Microwaves, Antennas & Propagation

View full text Add to dashboard Cite

An innovative aperiodic phased array antenna architecture with quantised excitation for space‐borne synthetic aperture radar (SAR) is presented. Compared to traditional periodic arrays, the proposed array antenna enjoys two major advantages including (i) much higher overall power efficiency and (ii) phase‐only control for both transmitting (TX) and receiving (RX) patterns to fit different space SAR beam shaping and steering requirements. The unprecedented studies on the quasi‐optimum TX and RX pattern strategies for space SAR are carried out and this strategy is utilised in the design of the proposed aperiodic phased array. Performance of the proposed array when being applied to space SAR are evaluated. Moreover, the authors obtained positive results which endorse the design.

show abstract

Section: Quasi-optimum Tx and Rx Pattern Decompositionsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

High‐power efficiency aperiodic phased array antenna for space‐borne SAR

Yang

Liu

et al. 2018

IET Microwaves, Antennas & Propagation

View full text Add to dashboard Cite

show abstract

“…The deficiencies of large phased array antennas in the above four aspects have restricted the development and application of spaceborne SAR systems to a certain extent. Studies have shown that the above problems are expected to be improved when applying Uniform Amplitude/Equal Amplitude or Quantized Amplitude aperiodic array phased array antennas in spaceborne SAR systems [36][37][38][39]. The spacing between the elements of an Aperiodic Phased Array Antenna is usually not uniform [36,38,40,41].…”

Section: • Redundant System Performancementioning

confidence: 99%

The Present Situation and Development for Spaceborne Synthetic Aperture Radar Antenna Arrays

Li¹,

Li²,

Liu³

et al. 2022

Antenna Arrays - Applications to Modern Wireless and Space-Born Systems

View full text Add to dashboard Cite

Synthetic aperture radar (SAR) based on satellites and or space vehicles as motion platform has the capability to work under all weather conditions, day and nights, and has become an indispensable mean for earth observation. At present, the large-scale phased array antenna, such as the active microstrip-phased array antenna of SIR-C imaging radar and the waveguide slot-phased array antenna of Radarsat-1 imaging radar, is one of the core components of spaceborne SAR and determines the system performance to a large extent. Although the traditional antenna array scheme has been widely used in existing spaceborne SAR systems due to strong beam control ability, sufficient failure redundancy backup, mature design method and so on, it still has drawbacks, for example, large volume, high weight and manufacturing cost, and low energy utilization rate, which restrict the further improvement of performance and are burdens on the research of next-generation high-performance spaceborne SAR system. With the development of electric and electronic techniques, forthcoming SAR array-phased array antennas will make breakthroughs in antenna architectures, concepts, technologies and modes, for instance, periodic reflector array antennas and metamaterial array antennas. This chapter focuses on the present and forthcoming development of spaceborne SAR antenna arrays.

show abstract

“…In addition, the structural deformation caused by external loads will also change the electrical performance of the antenna during its service. For example, microstrip antennas are widely used in spaceborne synthetic aperture radar (SAR) antenna [9,10]. e antenna in orbit is in a very complex thermal environment [11].…”

Section: Introductionmentioning

confidence: 99%

Effect of Ground Plane Deformation on Electrical Performance of Air Microstrip Antennas

Wang

Lou

et al. 2020

International Journal of Antennas and Propagation

View full text Add to dashboard Cite

This paper covers the variation of electrical performance of air microstrip antennas due to its ground plane deformation. A typical sinusoidal function is utilized to characterize the shape of deformation, based on which different shapes of ground plane can be obtained by changing control parameters. From the simulation results by HFSS, there is a strong linear relationship between the offset of resonant frequency and the amplitude of deformation. The equivalent thickness of the air medium is introduced into the calculation model, and then the mathematical model is established to describe the resonant frequency offset and deformation amplitude. It can also be seen from the radiation pattern that the directivity decreases with the increase of deformation. The proposed method can be used to predict the effect of ground plane deformation on electrical performance of air microstrip antennas.

show abstract

Innovative aperiodic arrays for SAR spaceborne applications

Cited by 7 publications

References 4 publications

High‐power efficiency aperiodic phased array antenna for space‐borne SAR

High‐power efficiency aperiodic phased array antenna for space‐borne SAR

The Present Situation and Development for Spaceborne Synthetic Aperture Radar Antenna Arrays

Effect of Ground Plane Deformation on Electrical Performance of Air Microstrip Antennas

Contact Info

Product

Resources

About