A 45‐ to 57‐GHz low‐power amplifier in 90 nm bulk CMOS

Abstract

By using 2 3 2 MIMO and photonics-aided heterodyne coherent detection based on advanced digital signal procession, we have experimentally demonstrated a radio-overfiber system which can reliably deliver a 59.52 Gbit/s PDM-SC-16QAM signal over a 20 km SMF-28 and a 40 m W-and wireless link with the BER less than HD-FEC threshold. When we extend the transmission fiber length to be 100 km, we can realize 51.2 Gbit/s PDM-SC-16QAM signal transmission over the same wireless link. To our knowledge, this is one record for the PDM-SC-16QAM signal wireless transmission at W-band. AbstractIn this article, a novel two-stage 45-57 GHz low-power amplifier is presented and implemented in a 90-nm bulk CMOS technology. The crossing-capacitor neutralization technique is adopted to improve the gain and isolation of the amplifier. Meanwhile, the low-loss transmission line and on-chip transformer are designed for the matching networks. The measurement results show that the proposed amplifier achieves 3-dB gain bandwidth of 12 GHz, from 45 to 57 GHz. The maximum small-signal gain of this amplifier is 7.2 dB at 48.4 GHz, and the output 1-dB compression power is 26.8 dBm at 48.4 GHz. This amplifier consumes total power of 5.52 mW under 1.2 V voltage supply. K E Y W O R D S

An analytical approach to designing millimeter‐wave LNAs with transformer‐based matching networks

“…On the other hand, differential common source (CS) or cascode circuits are widely used due to their excellent common mode suppression characteristics, the NC structure for improving gain and isolation, and matching transformer network for reducing chip area. [9][10][11][12][13][14][15][16] However, it is necessary to consider the transformer as a multiorder network, which makes the actual design complex and sometimes even requires multiple iterations and optimizations.…”

“…However, the complex coupling exacerbates the mutual influence between the front and rear stages of the circuit, resulting in a decrease in the unilateralization of the circuit and requiring more repetitive tuning. On the other hand, differential common source (CS) or cascode circuits are widely used due to their excellent common mode suppression characteristics, the NC structure for improving gain and isolation, and matching transformer network for reducing chip area 9–16 . However, it is necessary to consider the transformer as a multiorder network, which makes the actual design complex and sometimes even requires multiple iterations and optimizations.…”

A A 57-64 GHz High-gain Amplifier using Ultra-wideband Inductors in the IMNs and Optimization by PCA and SDSM

“…In the design of these amplifiers, by the appropriate input/output and inter-stage impedance matchings, the returned power decreases, and the transmitted power increases, which in turn increases the gain. The transmission line impedance matching networks for millimeter-wave amplifiers have been implemented in low noise amplifier [1][2][3][4][5][6][7], high-gain low noise amplifier [8], wideband low noise amplifier [9], distributed amplifier for ultra-wideband application [10], ultra-low power low noise amplifier [11], low-power high-gain amplifier [12], low power amplifier [13], power amplifier [14][15][16][17][18], wideband power amplifier [19][20][21], and millimeter-wave amplifiers [22][23][24][25]. However, only the simulated results have been provided in these references, and no solutions were proposed analytically to optimize the networks.…”

A 27‐33 GHz compact medium power amplifier with pole‐tuning technique in 130 nm CMOS technology

“…Wideband millimeter (mm)-wave integrated circuits are crucial to meet the growing demand for high data rate wireless communications and high definition video transmission. [1][2][3][4][5][6][7][8] The mm-wave amplifier is one of the crucial blocks in the transceiver systems. [9][10][11][12][13][14][15][16] Silicon technology is a good choice for the mm-wave amplifier due to its great advantages in cost, volume, and yield.…”

“…Wideband millimeter (mm)‐wave integrated circuits are crucial to meet the growing demand for high data rate wireless communications and high definition video transmission 1‐8 . The mm‐wave amplifier is one of the crucial blocks in the transceiver systems 9‐16 .…”