Simple and robust self‐healing technique for millimetre‐wave amplifiers

Abstract

A simple and robust self-healing technique for millimetre-wave (mm-wave) amplifiers is proposed. The selfhealing technique can correct the operation frequency shifting of the amplifier (including its input and output impedance matching shifting) due to process, voltage, and temperature variations and modelling inaccuracy. A mmwave amplifier with digitally controlled artificial dielectric transmission lines as fine frequency tuning components and an on-chip power detector as the frequency shifting detector has been implemented in 65 nm complementary metaloxide-semiconductor to verify the effectiveness of the technique. The operating frequency of five amplifier chips is calibrated by running the self-healing algorithm on a field-programmable gate array development board. On average, the gain of the amplifier is improved by 2.60 dB from 13.66 to 16.26 dB and the input matching is improved by 12.78 dB from −4.89 to −17.67 dB at 56 GHz after the proposed self-healing procedure.

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.…”