28.7 A Wideband Blocker-Tolerant Receiver with High-Q RF-Input Selectivity and <-80dBm LO Leakage

6.5 A 3dB-NF 160MHz-RF-BW Blocker-Tolerant Receiver with Third-Order Filtering for 5G NR Applications

“…With a -60dBm 143MSym/s (0.85Gb/s) 64-QAM OFDM input signal, the RX EVM only degrades from -26.4dB to -25.5dB when a -8dBm blocker is applied at |Δf|/BW=5. Benchmarking with prior LNTA-based RXs [5][6][7] (Fig. 7), this work offers the highest filtering order and flat BW, while maintaining a low NF.…”

“…However, the OB LNTA gain (GLNTA) and the ultimate input rejection will be limited by Rsw, imposing a strong tradeoff between area, LO power, and linearity. A more promising solution is to place a band-stop N-path filter in the LNTA's feedback [5][6]. In this way, a larger transconductance gain of LNTA (Gm) simultaneously results in better NF and OB rejection, as the far-out OB Zin is ~1/Gm.…”

A Survey of Self-Interference in LTE-Advanced and 5G New Radio Wireless Transceivers

“…To achieve good filtering performance, the switching resistance should be low, which is achieved by using large switches. Because of the mismatch between the switches, strong LO leakage is introduced, which has to be below the spurious emission requirements defined by the 3GPP [62]. In addition, large capacitors are required to achieve narrowband filtering due to the small source impedance [63].…”