Discussion Forum

Hello, everybody. I'm currently working on a project involving the design of an antenna operating in GHz or THz frequencies to simulate the electric field around a microchip(I need electric field to interact with charged particle). This microchip operates with an alternating voltage using a sawtooth signal ranging from 0 to 10 V, displaying a changing positive potential over time. Initially, I utilized the electrostatics and electrocurrent modules in a time-dependent study. However, it seems that these physics modules do not fully account for the propagation of electromagnetic waves, which travel at the speed of light. Consequently, I've switched to the RF module, which is better suited for GHz and THz frequencies. However, I've encountered two main issues:

1) In contrast to electrostatics, where we define potential on electrodes through terminals, in the RF module, it's only possible to excite the system through a lumped port located between two poles. How can I design a configuration with just one electrode excited by an AC voltage, similar to a monopole antenna with a single circular-shaped electrode?

2) In electrostatics (and electrocurrent), it's possible to excite an electrode using waveforms (e.g., sawtooth or triangular signals) in the time domain. Unfortunately, I couldn't find similar options within the RF module. I would greatly appreciate any assistance or advice in solving these issues. Thank you.