Gain Enhanced On-chip Monopole Antenna Utilizing Dual Rectangular Patch Artificial Magnetic Conductor at 5.8 GHz

The rising popularity of chip-based devices has spurred interest in the design of on-chip antenna (OCA) technology due to its compact size, low power consumption, and ease of integration into footprint chip-size transceivers. However, OCAs face challenges such as low gain, poor radiation efficiency, and a distorted radiation pattern caused by low resistivity and high permittivity of the lossy silicon substrate. This study investigates the effect of a dual-rectangular patch (DRP) structured artificial magnetic conductor (AMC) on OCA's performance enhancement. A DRP-AMC structure was developed as a modified AMC reflective surface, optimized to boost the gain and characteristic of the antenna at 5.8 GHz. A prototype antenna was fabricated and tested to assess the OCA's performance. The results showed a gain increase of 40.2% compared to the non-AMC-inspired model and 29.2% over the single-rectangular patch (SRP) model. This improvement is attributed to the DRP-AMC's performance, making this antenna suitable for Wi-fi 6, RFID, and WiMAX applications at 5.8 GHz.