A 42–62 GHz Transformer-Based Broadband mm-Wave InP PA With Second-Harmonic Waveform Engineering and Enhanced Linearity
- 1 December 2020
- journal article
- research article
- Published by Institute of Electrical and Electronics Engineers (IEEE) in IEEE Transactions on Microwave Theory and Techniques
- Vol. 69 (1), 756-773
- https://doi.org/10.1109/tmtt.2020.3037092
Abstract
Indium phosphide (InP) heterojunction bipolar transistors (HBTs) with ft/fmax of 350/675 GHz are studied and explored for a linear, high efficiency and broadband power amplifiers (PAs) at mm-wave frequencies. Unlike the conventional transmission-like-based design, this article presents a compact, broadband transformer-based power combining and impedance matching using the waveform engineering approach. We present, for the first time, mm-wave (40-60 GHz) InP topologies incorporating the following: 1) on-chip transformer for broadband, efficient and compact impedance matching and power combining; 2) synthesis of optimal second-harmonic impedance through transformer center tap to achieve high-efficiency differential PA operation; and 3) biasing techniques to reduce AM-PM distortion for linearity enhancement. This work reports a transformer-based push-pull InP PA in 0.25 μm technology across 42-62 GHz demonstrating a peak power added efficiency (PAE) of 39.5% and peak Psat of 20.6 dBm. The PA supports 4 GHz bandwidth at 52 GHz with an EVM of -22.9 dB and an adjacent channel leakage ratio (ACLR) of -32 dBc for an 8 Gb/s QPSK signal at 13.3 dBm average output power. This work presents one of the highest efficiency with wide bandwidth and highest linearity mm-wave PAs in integrated technology.Keywords
This publication has 43 references indexed in Scilit:
- Design of a $V$ -Band 20-dBm Wideband Power Amplifier Using Transformer-Based Radial Power Combining in 90-nm CMOSIEEE Transactions on Microwave Theory and Techniques, 2016
- 71–95 GHz (23–40% PAE) and 96–120 GHz (19–22% PAE) high efficiency 100–130 mW power amplifiers in InP HBTPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2016
- A 60-GHz Power Amplifier With AM–PM Distortion Cancellation in 40-nm CMOSIEEE Transactions on Microwave Theory and Techniques, 2016
- Generalized Continuous Class-F Harmonic Tuned Power AmplifiersIEEE Microwave and Wireless Components Letters, 2016
- A Methodology for Implementation of High-Efficiency Broadband Power Amplifiers With Second-Harmonic ManipulationIEEE Transactions on Circuits and Systems II: Express Briefs, 2015
- Mutual Synchronization for Power Generation and Beam-Steering in CMOS With On-Chip Sense Antennas Near 200 GHzIEEE Transactions on Microwave Theory and Techniques, 2015
- A mm-Wave Segmented Power MixerIEEE Transactions on Microwave Theory and Techniques, 2015
- A >0mW SSPA from 76-94GHz, with Peak 28.9% PAE at 86GHzPublished by Institute of Electrical and Electronics Engineers (IEEE) ,2014
- DC Boosting Effect of Active Bias Circuits and Its Optimization for Class-AB InGaP–GaAs HBT Power AmplifiersIEEE Transactions on Microwave Theory and Techniques, 2004
- Direct parameter-extraction method for HBT small-signal modelIEEE Transactions on Microwave Theory and Techniques, 2002