設置アンテナと大型構造物
設置アンテナの解析では、プラットフォームと呼ばれる電気的に大きな構造物を扱います。これらのプラットフォームには、飛行機、船舶、自動車などがあります。アンテナおよびアレイは、これらのプラットフォーム上に設置されます。Antenna Toolbox™ を使用すると、プラットフォームがアンテナの性能に与える影響を把握できます。
Antenna Toolbox には、全波/ハイブリッド対応の電磁界ソルバーが用意されており、ポート、表面、フィールドの各解析や、アンテナ配置の検討、レーダー断面積 (RCS) の計算などに利用できます。
アンテナ素子を使用して無限アレイを作成し、必要な走査角度範囲でアレイを解析して、走査素子パターンを計算します。
オブジェクト
platform | Create platform object for installed antenna setup |
installedAntenna | Installed antenna setup |
infiniteArray | Create infinite array of 2-D custom antenna in xy-plane |
関数
rcs | Calculate and plot monostatic and bistatic radar cross section (RCS) of platform, antenna, or array |
patternSystem | Visualize radiation patterns of multiple antennas installed on platform (R2024a 以降) |
トピック
- Infinite Arrays
Infinite arrays are rectangular arrays of infinite extent. In an infinite array, a single element called a unit cell, is repeated uniformly an infinite number of times along a plane.
- Infinite Ground Plane
Antenna Toolbox catalog elements use the image theory technique to model an infinite ground plane. The main advantage of image theory technique is that you do not need to discretize the ground plane. Image theory reduces the overall size of the problem and you get a solution faster.
- Hybrid MoM-PO Method for Metal Antennas with Large Scatterers
Hybrid method of moments (MoM) and physical optics (PO) computational technique in Antenna Toolbox allows you to model antennas near large scatterers such as parabolic reflectors. The antenna element is modeled using MoM while the effect of electrically large structures is considered using PO.
- Model Infinite Ground Plane for Balanced Antennas
This example shows how to model an infinite ground plane and calculate fundamental antenna parameters for balanced antennas.
- Model Infinite Ground Plane for Unbalanced Antennas
This example shows how to model an infinite ground plane and calculate fundamental antenna parameters for unbalanced antennas.
- Fast Multipole Method for Large Structures
Fast Multipole Method (FMM) for analysis of large structures.
注目の例
Cooperative Bistatic Radar I/Q Simulation and Processing
Simulate I/Q for a cooperative bistatic system and perform subsequent signal processing for a single bistatic transmitter and receiver pair.
Electromagnetic Analysis of Reconfigurable Intelligent Surface
Model the response of a reconfigurable intelligent surface (RIS) using full-wave electromagnetic simulation. The RIS, also known as the intelligent reflecting surface (IRS), large intelligent surface (LIS), or metasurface, has garnered significant interest in the wireless communication community. The RIS consists of a large array of subwavelength unit cell elements which can manipulate the phase, amplitude, polarization, or frequency of the incident signal. If an obstacle blocks the direct path between the base station (BS) and the user equipment (UE), the parasitic reflection of the RIS can provide an alternative path for signal transmission, as this figure shows. An external phase control mechanism can be integrated to control the reflection characteristics of the RIS.
Metasurface Antenna Modeling
Design, model, and analyze a metasurface antenna based on reference [1]. Metasurface antennas take advantage of the periodic boundary of each radiation unit cell to group the radiation unit in a more compact space.
Analysis of Electrically Large Structures Using Hybrid MoM and FMM
Analyze electrically large antennas using two solvers in Antenna Toolbox™: the hybrid method of moments (MOM) and the fast multipole method (FMM). The overall size of an antenna can be expressed in electrical terms, as a function of the frequency of operation or wavelength . Doing so can enable you to choose the electromagnetic solver to deploy for analysis.
Radar Cross Section Benchmarking
Radar cross section benchmarking example.
Infinite Array Analysis
The use of infinite array analysis to model the behavior of a single element embedded in the array.
Infinite Array of Microstrip Patch Antenna on Teflon Substrate
Model a probe-fed microstrip patch element used as a unit cell in an infinite array.
Pattern Analysis of Symmetric Parabolic Reflector
Investigates the effect of feed position and reflector surface geometry on the far-field radiation pattern of a half-wavelength dipole-fed symmetric parabolic reflector.
Modeling Infinite Ground Plane in Antennas and Arrays
Illustrates modeling of antennas and arrays with infinite ground plane. The main advantage of modeling the ground plane as infinite is that the ground plane is not meshed. This helps in speeding up the solution. The structure is modeled using the method of images. Several antenna elements in Antenna Toolbox™ have a ground plane as part of the structure. For other elements, the ground plane can be introduced by placing them in front of a reflector.
Installed Antenna Analysis - Modeling Antennas with Platforms
The example models an antenna element in presence of a large platform. The antenna is modeled accurately using the Method of Moments (MoM) while the effect of the electrically large platform is considered using physical optics (PO).
