This paper presents a synthesis flow for building lumped circuit models of arbitrary complexity for mm-wave IC passive components, based on S-parameters obtained by measurements or electromagnetic (EM) field simulations. Lumped circuit models are needed in time-domain simulations, or to speed up the fine-tuning of passive circuit blocks, as iterating is much faster in circuit simulators than in EM simulator. Modeling algorithm is implemented in MATLAB, and the design flow has a few new features. The device model is given by Spice netlist, and its structure or complexity is not limited. Differential and common mode forms of admittance parameters are used to simplify solving the initial model component values that are then refined manually or by numerical optimization. The flow is illustrated by modeling a parallel LC resonator, whose response has been measured from 1 to 40 GHz.
An integrated orthogonal load-modulated balanced amplifier (OLMBA) is designed and fabricated using 22 nm CMOS FDSOI. The input control signal in OLMBA is reflected back to balanced power amplifier (PA) pair via reactively terminated quadrature hybrid at the output in order to achieve load modulation. The proposed PA operates at third generation partnership project/new radio (3GPP/NR) 26/28 GHz Frequency Range 2 (FR2), achieving 19.5 dBm output power, 16.6 dB gain, 15.7% power added efficiency (PAE) and 18.3 dBm output 1-dB compression point (P 1dB ), measured at 26 GHz. The PA shows excellent linearity performance with modulated signals. Using -28 dBc adjacent channel leakage ratio (ACLR) and -21.9 dB (8%) error vector magnitude as threshold values, the proposed PA achieves 11.4 dBm and 4.9 dBm average output power (Pavg) with 100 MHz and 400 MHz 64-QAM 3GPP/NR FR2 signal, and 14 dBm Pavg with 0.6 Gb/s (120 MHz) single carrier (SC) 64-QAM signal, measured at 26 GHz.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.
hi@scite.ai
10624 S. Eastern Ave., Ste. A-614
Henderson, NV 89052, USA
Copyright © 2024 scite LLC. All rights reserved.
Made with 💙 for researchers
Part of the Research Solutions Family.