Abstract
A reconfigurable filtering slot antenna (filtesnna) for Wi-Fi/LTE mobile systems is proposed. The reconfigurable filtesnna is based on integrating a switchable bandpass filter inside the feeding line of a slot antenna structure. This design is achieved by using an open/short-ended inter-digital E-shaped patch via two integrated pin diodes within its structure. The proposed filtesnna has a small size of 0.25λ0 × 0.1λ0 (λ0 is the free-space wavelength at 2.1 GHz). The filtesnna is designed at centre frequencies of 2.1/2.4 GHz with measured 10 dB return loss impedance bandwidths from 2.03 to 2.17 GHz or 2.37 to 2.51 GHz when the diodes are ON or OFF, respectively. A prototype of the reconfigurable filtesnna has been fabricated and measured. A good adaptation is acquired between the simulated and the measured results.
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