A -10.1dBm IIP3, 0.3-40GHz Receiver Using Hybrid-Path Band-Selection with Reduced LO Coverage Bandwidth Supporting 480Mb/s 4096-QAM and 7.2Gb/s 64-QAM Modulation

The increasing demand for multi-band applications, including the 5G (FR1 and FR2), 6G, and WiFi, covers a frequency range from 0.45 to 40GHz. To meet specific requirements of different standards, various wideband receivers are developed [1]–[3]. In [1] and [2], the harmonic selection technique and wideband LNA are introduced to achieve wideband receiver covering the 5G FR2 band, respectively. However, to satisfy the sub-6G operation, the receiver covering the 0.45-6GHz is required, which desires a high
$\mathrm{f}_{\text{high}}/\mathrm{f}_{\text{low}}$
ratio of 13.3 and is not easy to implement using on-chip transformer-based matching. Then, the resistive-load method is used for the high
$\mathrm{f}_{\text{high}}/\mathrm{f}_{\text{low}}$
receiver design [3]. In this way, a 0.4-6GHz receiver is achieved. However, the mm-wave band performance is limited by the circuit parasitic. To cover both the mm-wave band and sub-6G, numerous receiver channels are used [4]. As shown in Fig. 1, the communication band selection is implemented by the SPNT on RF path, which increases the NF. Besides, a wideband LO coverage range is required, which increases the power consumption of the LO generation network. This work introduces a 0.3-40GHz hybrid-path band-selection receiver. The receiver supports 40MHz and 50MHz 4096-QAM modulation at 2.4 and 3.5GHz, while a 1.2GHz 64-QAM modulation at 18GHz is achieved. The receiver also achieves the 400MHz 256-QAM at 24, 28, 37, and 39GHz, respectively.