Phase-only synthesis of omnidirectional patterns with multiple nulls from a uniform circular array

Dorsey, W. Mark; Mital, Rashmi; Scholnik, Dan P.

doi:10.1109/aps.2016.7696091

Cited by 7 publications

(5 citation statements)

References 8 publications

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“…UCA is extensively utilized in the context of 2D direction finding due to its attractive advantages, including omnidirectional azimuth coverage, almost unchanged directional pattern, and about 90 • elevation angle coverage [12][13][14]. The drawback of UCA is the sign ambiguity of elevation.…”

Section: Introductionmentioning

confidence: 99%

All-Directional DOA Estimation for Ultra-Wideband Regular Tetrahedral Array Using Wrapped PDoA

Luo

Zhang

Yang

et al. 2022

Sensors

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In this paper, we proposed a Regular Tetrahedral Array (RTA) to cope with various types of sensors expected in Ultra-Wideband (UWB) localization requiring all-directional detection capability and high accuracy, such as indoor Internet-of-Things (IoT) devices at diverse locations, UAVs performing aerial navigation, collision avoidance and takeoff/landing guidance. The RTA is deployed with four synchronized Ultra-Wideband (UWB) transceivers on its vertexes and configured with arbitrary aperture. An all-directional DOA estimation algorithm using combined TDoA and wrapped PDoA was conducted. The 3D array RTA was decomposed into four planar subarrays solved as phased Uniform Circular Array (UCA) respectively. A new cost function based on geometric identical and variable neighborhood search strategy using TDoA information was proposed for ambiguity resolution. The results of simulation and numerical experiments demonstrated excellent performance of the proposed RTA and corresponding algorithm.

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Section: Introductionmentioning

confidence: 99%

All-Directional DOA Estimation for Ultra-Wideband Regular Tetrahedral Array Using Wrapped PDoA

Luo

Zhang

Yang

et al. 2022

Sensors

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“…Traditional 3sector models using ULAs or URAs provide limited beamforming angles in both azimuth and zenith directions. Employing UCAs can overcome the drawback of degraded performance near sector boundaries by uniformly transmitting signals to all azimuth angles from circularly located antenna elements [13][14][15][16][17]. By vertically stacking the UCAs, a cylinder-type array structure can be constructed to add beam-tilting controllability over a certain range of zenith angles [18].…”

Section: Introductionmentioning

confidence: 99%

3D Antenna Structures Using Uniform Triangular Arrays for Efficient Full-Directional Multiuser Transmission

Yang

Ryoo

Sung

et al. 2019

International Journal of Antennas and Propagation

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In order to increase the system capacity of the 5G mobile communication system, multiple-input multiple-output (MIMO) transmission techniques using a large-scale array over the millimeter-wave band have attracted a great amount of attention. To cope with various types of receivers expected in 5G communications such as user equipment (UE) in small cells, indoor Internet-of-Things (IoT) devices at diverse locations, and drones performing aerial navigation, newer types of antenna arrays require all-directional transmission capability. Existing antenna structures with typical panel arrays, however, have restrictions on their transmission angles in both horizontal and vertical directions. In this paper, we propose to employ three-dimensional (3D) array structures composed of multiple triangular panels for efficient massive MIMO transmission of the next-generation wireless systems. We analyze beamforming characteristics of a uniform triangular array (UTA) suitable for such 3D array configurations and present a basic codebook applicable to UTAs. Using antenna structures with multiple UTA panels, multiuser transmission performance is evaluated to demonstrate the effectiveness of the proposal.

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“…In some works, a particular radiation pattern such as Chebyshev's pattern, that is, equal‐ripple, has been designed, for amplitude‐phase synthesis. Phase‐only synthesis is also possible for design of circular arrays . For phase‐only synthesis, the optimization methods are usually used.…”

Section: Introductionmentioning

confidence: 99%

“…Phase-only synthesis is also possible for design of circular arrays. 12 For phase-only synthesis, the optimization methods are usually used.…”

Section: Introductionmentioning

confidence: 99%

Synthesis of circular arrays with sidelobes of individually arbitrary levels

Khalaj‐Amirhosseini

Farhoudi

2019

Int J RF Microw Comput Aided Eng

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Synthesis of circular antenna arrays to have individually arbitrary sidelobe levels, is investigated. Circular arrays are synthesized by applying a transformation to previously designed linear arrays. The antennas of the circular arrays are considered either isotropic or directive. The synthesized patterns are steerable without any distortion. Some examples are brought to verify the effectiveness of the proposed procedure for both isotropic and directive antennas.

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Phase-only synthesis of omnidirectional patterns with multiple nulls from a uniform circular array

Cited by 7 publications

References 8 publications

All-Directional DOA Estimation for Ultra-Wideband Regular Tetrahedral Array Using Wrapped PDoA

All-Directional DOA Estimation for Ultra-Wideband Regular Tetrahedral Array Using Wrapped PDoA

3D Antenna Structures Using Uniform Triangular Arrays for Efficient Full-Directional Multiuser Transmission

Synthesis of circular arrays with sidelobes of individually arbitrary levels

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