Electrically Large Structures

This article concerns the design of a X-Band squintless horn antenna array consisting out of 96 radiating elements. The full design of the 2.4m antenna blank (including the simultaneous excitation of all 96 arms) has been performed within CST MICROWAVE STUDIO®. The simulated results have been in an excellent agreement with compact range measurements. Read full article..

This paper presents the excellent correlation of measurement results to the numerical calculations of a SATIMO dual-ridge horn antenna which include the directivity, boresight gain, and return loss vs. frequency. The structure is electrically large which lends itself, as a result of its efficient memory utilisation, to the CST MICROWAVE STUDIO® (CST MWS) Time Domain Solver. Broadband, high resolution gain results can be obtained within a single run with as many as 100 farfield monitors being defined. The results are presented with the courtesy and permission of SATIMO, Italy. Read full article..

We present the RCS and surface current simulation for an electrically large helicopter. The simulation is done using a plane wave excitation at 7GHz. The helicopter is approximately 180 wavelengths in size. The calculation is performed with the Integral Equation solver of CST MICROWAVE STUDIO® using the Multilevel Fast Multipole Method. The solver is very accurate and efficient in terms of complexity for simulating electrically large structures. Read full article..

The article describes the RCS and farfield simulation of a large airplane at a frequency of 4GHz. The simulation is performed with the new Integral Equation solver of CST MICROWAVE STUDIO®. The length and width of the airplane is about 27 meters, and the total height is about 8 meters. The excitation is done by a plane wave from the front. In total, the calculation for the airplane is approximately 350 wavelengths in size. We perform a monostatic RCS calculation and we show the farfield and surface current distributions for the airplane. Read full article..

This article concerns the application of CST MICROWAVE STUDIO® (CST MWS) to the simulation of electrically large automotive structures. CST MWS is ideal for such applications since the geometry can be easily imported and modified using the powerful user interface, the accurate and robust PERFECT BOUNDARY APPROXIMATION (PBA)® approximation is exploited, the linear scaling of memory with increasing mesh cells and the ability to simulate broadband in one single simulation. An example of an on-glass antenna simulation is also demonstrated highlighting the versatility of the CST MWS Transient solver. Read full article..

This article demonstrates the simulation of an electrically large antenna. The design and numerical results are courtesy and permission of Chelton Antennas, France. The antenna operates at 8 GHz and was simulated using the CST MICROWAVE STUDIO® Transient Solver which is, as a result of its efficient memory scaling, ideal for such electrically large structures - the dish diameter in this example is approximately 20 wavelengths in size. Read full article..

The article presents an antenna-based approach to near-field imaging and spectroscopy, which can be used for both continuous-wave and pulsed broadband electromagnetic radiation from microwave to terahertz frequencies. CST MICROWAVE STUDIO® (CST MWS) was used to perform the simulations. Read full article..