Interference (communication)

Slot antenna

Engineering

Bandwidth (computing)

Broadband

Telecommunications

Computer science

Antenna (radio)

Acoustics

Physics

Antenna measurement

Optics

Electronic engineering

Channel (broadcasting)

A novel broadband anti-interference cavity slot antenna is presented. The antenna operating bandwidth is broadened by multi-resonating frequencies technology with three radiating slots and a cavity. The antenna achieves a good impendence matching performance and filtering characteristics simultaneously. An X-band broadband antenna is simulated and optimized. The impendence bandwidth is about 46.3% (Sll $\leq$ -10dB) from 7.3GHz to 11.7GHz and the radiating patterns show good properties in the band. Furthermore, the simulated gains from 2 to 18 GHz exhibits good skirt selectivity similar to the conventional band pass filter. The gain in band increases progressively with the frequencies and it is suppressed within the out band.

A Broadband Filtering Cavity Backed Slot Antenna