Compact Non-reflecting Tapered Slot Antenna with Effective Short-pulse Transmission Capability

A compact non-reflecting tapered slot antenna (NRTSA) with effective short-pulse transmission capability is proposed. The NRTSA integrates a loading network composed of a resistor, an inductor, and two lumped resistively loaded loops. The loading network can effectively absorb the non-radiated reflection signal, and maintain the radiation efficiency and realized gain of the NRTSA. The NRTSA is fabricated to demonstrate its performance. The measured results show that the NRTSA features a -10-dB impedance bandwidth from DC to 20.24 GHz, a peak realized gain of 8.24 dBi at 13.5 GHz, and a 3-dB realized gain bandwidth from 9.5 GHz to 20.5 GHz (73.33%). Meanwhile, a waveform fidelity of 0.979 and a ringing level of -24.14 dB when transmitting a differential Gaussian pulse with a spectrum from 9 GHz to 20 GHz is achieved. Thus, the compact NRTSA with effective short-pulse transmission capability is promising in ultra-wideband short-pulse scenarios.