The design of a miniature antenna for Wi-Fi enabled memory card

With the increasing popularity of wireless capability of contemporary electrical devices, the demand for small and efficient antenna design is also on the rise. This paper presents the design and implementation of a miniature antenna for Wi-Fi enabled Secure Digital (SD) card to be used in a digital camera. The challenges faced in the design of such antenna are the limited antenna volume and the severe loading from nearby metallic structures. The design is optimized using simulation tool prior to prototype modeling and measurement. Antenna efficiency of 38% is achieved in actual operating environment when the memory card is placed inside a camera.