Calibration-Free Blocker Rejection Broadband CMOS Low Noise Amplifier for Advanced Cellular Applications
Calibration-Free Blocker Rejection Broadband CMOS Low Noise Amplifier for Advanced Cellular Applications
Blog Article
This g5210t-p90 study presents a broadband complementary metal-oxide semiconductor (CMOS) low noise amplifier (LNA), containing out-of-band (OB) blocker rejection capability without an additional calibration process.In the proposed design, separate all-pass and band-stop filter stages are provided in parallel as main and auxiliary paths, respectively, whose amplitude and phase variations are identically tracked by each other over a process, voltage, and temperature dependency.By appropriately combining an in-band signal and OB blockers passed through those filter blocks, robust OB blocker rejection can be realized in the wide frequency range.The designed LNA incorporates a pre-amplifier stage for broad input matching and low-noise characteristics, an N-path filter-based frequency selective stage, and a combiner stage to suppress undesired OB blockers.
The designed calibration-free OB blocker rejection broadband LNA is fabricated in a 65 nm CMOS technology and mainly characterized in long-term evolution frequency division duplexing bands, ranging from 0.7 to 2.7 GHz.The demonstrated design consistently attains transmitter leakage and other OB blocker rejection of more than 22.
8 dB and 16 dB in low-band (LB) (0.7–1 GHz) and mid- and high-band (MB and HB) (1.7–2.7 GHz) frequency range from several samples without extra gain or phase adjustment, respectively.
The implemented LNA also achieves gains of 10.5–11.0 dB and 8.0–10.
0 dB, noise figures of 3.7–4.1 dB and 3.8–4.
9 dB, OB third-order intercept points greater than 8.2 dBm and 9.8 dBm, and princess polly dresses long sleeve OB 1-dB compression points greater than −5.2 dBm and −5.
5 dBm, for LB and MB/HB, respectively.The implemented design consumes a total bias current of 23.9 mA with a nominal supply of 1.2 V and occupies an active area of 0.
53 mm2, excluding bonding pads.