Some results on interference suppression on electromagnetically dense platforms

Radio Systems Parameters and Performance Criteria Concerning Computation and Mitigation of EMI Effects

“…In the case of narrowband noise and inter ference, the SNR at the Rx input is slightly higher than at the detector input (SNR) S , but in the case of wideband noise they are filtered by the selective IF filters and the (SNR) S is usually significantly higher than the SNR level [14,45].…”

“…7. For a well-designed EICS an interference power level cancellation of more than 50 dB may be achieved and the protected victim Rx can op erate properly even on channels adjacent to the collocated interfering Tx [45,113]. A sample signal from the potentially interfering Tx is introduced via a coupler or an auxiliary antenna Rx.…”

“…Using a frequency-independent strongsignal suppressor (FISSS) circuit to suppress high-amplitude interfering signals and reduce only slightly the desired signal of low ampli tude. This technique is simple and efficient for radio communication and radar systems affected by CCI or ACI but does not perform as well as EICS [40,45]. The low-level desired signal is introduced through the Rx diplexer with a negligible loss and the high power level interfering signal can be sup pressed up to 40 dB for narrowband and up to 20 dB for broadband interfering signals [45].…”