Circular Microstrip Slot Antenna for Dual-Frequency RFID Application

Provided by: EMW Publishing
Topic: Mobility
Format: PDF
A compact wideband dual-frequency microstrip antenna is proposed in this paper. By employing an offset microstrip-fed line and a strip close to the radiating edges in the circular slot patch, an antenna operating at dual frequency with the impedance bandwidth of 26.2% and 22.2% respectively is presented. By attaching a strip to the radiating edges opposite to the microstrip fed line, this alters the current distribution and radiation on the antenna at the second resonant frequency.

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