Authors - A.N. Gachahi, L.W. Gachahi Abstract - Antennas are fundamentally important in all modern wireless communication systems. Their design directly influences the performance, efficiency, and size of wireless devices. A core limitation of existing antenna designs is their reliance on spatial resonance where antenna size is proportional to a fraction of the wavelength of the signal they are intended to transmit or receive. Here, we present the feasibility of using single-layer capacitors (SLCs) as radiating elements for antenna applications. The SLC approach exploits displacement currents and the temporal resonance inherent to capacitive structures. A theoretical framework is established using Maxwell’s equations and circuit-level analysis to explain how electromagnetic fields arise around SLCs. An experimental setup using an array of 90 ceramic capacitors is constructed, and a magnetic field sensor is used to measure radiated fields across a range of frequencies. The antenna is then modeled in MATLAB, and simulations are performed to evaluate radiation patterns and impedance characteristics. Results confirm field generation consistent with theoretical predictions. Integration into ESP32-C3 Wi-Fi modules is demonstrated. Impedance mismatch is identified as a key limitation and addressed through a resistive matching network, improving signal consistency under varying distance conditions. The theoretical, experimental and simulation results in this set-up confirm that SLCs can serve as efficient, compact antenna elements, with practical implications for RF systems where size, cost, and integration constraints are critical.
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