Performance analysis of conformal conical arrays for airborne vehicles

Morton, Thomas E.; Pasala, K.M.

doi:10.1109/taes.2006.248218

Cited by 20 publications

(16 citation statements)

References 24 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…A conformal conical slot array was optimally synthesized taking coupling effect into account [156]. The synthesis aimed at maximizing the directivity with minimum SLL and nulling the interfering signal considering least number of active element patterns.…”

Section: Conformal Arraymentioning

confidence: 99%

Mutual Coupling in Phased Arrays: A Review

Singh

Sneha

Jha

2013

International Journal of Antennas and Propagation

124

View full text Add to dashboard Cite

The mutual coupling between antenna elements affects the antenna parameters like terminal impedances, reflection coefficients and hence the antenna array performance in terms of radiation characteristics, output signal-to-interference noise ratio (SINR), and radar cross section (RCS). This coupling effect is also known to directly or indirectly influence the steady state and transient response, the resolution capability, interference rejection, and direction-of-arrival (DOA) estimation competence of the array. Researchers have proposed several techniques and designs for optimal performance of phased array in a given signal environment, counteracting the coupling effect. This paper presents a comprehensive review of the methods that model and mitigate the mutual coupling effect for different types of arrays. The parameters that get affected due to the presence of coupling thereby degrading the array performance are discussed. The techniques for optimization of the antenna characteristics in the presence of coupling are also included.

show abstract

Section: Conformal Arraymentioning

confidence: 99%

Mutual Coupling in Phased Arrays: A Review

Singh

Sneha

Jha

2013

International Journal of Antennas and Propagation

124

View full text Add to dashboard Cite

show abstract

“…In this section, numerical results are presented. Let us remind that any state of polarisation can be synthesised in (16) and (18); in the examples below, we take circular polarisation as an example to validate and illustrate the potentialities of the tri-polarised array and the proposed approach. Linear and conformal arrays are considered in the simulation.…”

Section: Numerical Resultsmentioning

confidence: 99%

“…For the extension to a conformal array, we should convert the response of each element from its local coordinate system to the global coordinate system, the details can be seen in [16]. In Section 4, we will give an example of the conformal array.…”

Section: Antenna Arraymentioning

confidence: 99%

Tri‐polarised antenna – a virtual rotatable dual‐polarised antenna used in polarised beampattern synthesis

et al. 2015

IET Microwaves, Antennas & Propagation

View full text Add to dashboard Cite

Tri‐polarised antennas are exploited to synthesise the optimal polarised beampattern in this study. First, the characteristics of a single tri‐polarised antenna are studied with an infinite current sheet model. Using the cross‐product algorithm, the authors find that three co‐located orthogonal current sheets are equivalent to a pair of orthogonal current sheets in a particular orientation. It implies that the tri‐polarised antenna is just virtually equivalent to a rotatable dual‐polarised antenna. Then by formulating the problem in a convex form, they adopt the convex optimisation algorithm to synthesise optimal polarised beampattern of the tri‐polarised array. The simulation results show that due to the increased orientation degree of freedom, the sidelobe and cross‐polarisation level of tri‐polarised array are significantly lower than the dual‐polarised array.

show abstract

“…In addition, it is found that the proposed array provides -40 dB with the same number of elements and base radius of the other two designs. On the other hand, at the same number of elements and base radius, the proposed stacked array provides 12° lower beamwidth than in [20], but is higher than [6] by 4°. Therefore, we can conclude that the proposed stacked array has efficient scanning performance with almost constant beamwidth due to the proposed weighting function in Equation (35) which also reduces the sidelobe levels.…”

Section: Comparsion With Relevant Conformal Array Designsmentioning

confidence: 95%

An Efficient Conformal Stacked Antenna Array Design and 3D-Beamforming for UAV and Space Vehicle Communications

Albagory

2021

Sensors

View full text Add to dashboard Cite

In this paper, a new conformal array structure and beamforming technique are proposed to provide efficient communication performance for unmanned aerial vehicles (UAVs) and space vehicles. The proposed array is formed by conformally stacking cylindrical, conical, and concentric circular (CSC4) arrays which are all coaxially aligned with the same axis of the conformed body and with uniform interelement spacing. The array elements are then fed by a weighting vector that has an adaptive cosine tapered profile where the maximum amplitude coefficient is oriented with the mainlobe direction to improve the scanning capabilities of the array and increase the array effective area. In addition, for very large, conformed body structures such as space vehicles, a frontal mainlobe-oriented partial CSC4 array beamforming technique is proposed to efficiently utilize the large CSC4 structure, reduce the processing requirements for mainlobe electronic steering, and to provide very low sidelobe levels with reduced backlobe levels. Simulation results show that the proposed CSC4 design can provide wide scanning angles of up to ±70° angular range in the θ-direction with only ±1° change in the beamwidth, without increasing array size and with achievable sidelobe level of –45 dB and backlobe levels less than –10 dB.

show abstract

Performance analysis of conformal conical arrays for airborne vehicles

Cited by 20 publications

References 24 publications

Mutual Coupling in Phased Arrays: A Review

Mutual Coupling in Phased Arrays: A Review

Tri‐polarised antenna – a virtual rotatable dual‐polarised antenna used in polarised beampattern synthesis

An Efficient Conformal Stacked Antenna Array Design and 3D-Beamforming for UAV and Space Vehicle Communications

Contact Info

Product

Resources

About