The fundamental goal in cellular and network wireless development is maximizing antenna performance while minimizing antenna size. In order to achieve this, antennas have increased in the number of array elements and in complexity of broadband networks, requiring highly accurate simulation programs for significant designs and tests. With ADS 3D EM simulation software, users can easily design and simulate many different types of antennas. EMPro can simulate the antenna in realistic surroundings, including the phone components, housing and even the human hand and head. Compliance testing can also be performed, such as specific absorption ratio (SAR) and hearing aid compatibility (HAC). Below are two examples of types of antennas you can design and simulate with ADS. Visit Keysight’s EM Applications Page for more examples!
- Multi-Band Planar Array Antenna
Large-array antennas become more challenging when the antenna is used for multiple bands. The field solver required to handle the capacity and speed is a design challenge for many engineers. One approach to this challenge is to divide the EM problem into small “sub-cells” that are integrated individually without carrying out an EM simulation at the full structure level. However, the coupling between the sub-cells will not be taken into account.
Using Momentum 3D Planar EM Simulator, you can design and simulate an entire multi-band planar array antenna for communication and radar applications with optimum accuracy. The complexity of this design requires a highly accurate simulation software, such as Momentum, to accurately characterize the antenna in terms of radiation and return loss.
Figure 1: Using Momentum 3D Planar EM Simulator, you can design and simulate an entire multi-band planar array antenna for communication and radar applications.
- 8x16 Patch Array Antenna
In order to create the desired directive radiation patterns, designers arrange multiple antennas so that their coexisting wave patterns add constructively or destructively in a specific formation. The main lobe antenna can be steered by changing the phase of excitations at each array element. Depending on the number of array elements and the complexity of the feeder network, the simulation of a patch array antenna can be quite challenging. Although simulation time and speed are mostly related to the problem size, another effect on simulation time is the frequency bandwidth.
The EMPro FDTD simulation engine is preferred because it produces a wide band simulation result with a single simulation. No frequency sweeping is necessary. FDTD also uses less memory while speeding up the simulation utilizing GPU acceleration.
Figure 2: The EMPro FDTD simulation engine is preferred because it produces a wide band simulation result with a single simulation. No frequency sweeping is necessary.
These are two of many prevalent applications of ADS and EMPro that can be found on Keysight’s EM Applications Page. Apply for a free trial of EMPro today!