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Content Provider | IET Digital Library |
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Author | Han, Jiang An Kong, Zhi Hui Ma, Kaixue Yeo, Kiat Seng Lim, Wei Meng |
Abstract | This study presents integration of transistor based inductive source degeneration and specially shielded transformer into a millimetre-wave power amplifier (mm-wave PA) operating at wideband. A new configuration of high Q distributed inductor is devised and embedded in CMOS transistor source to enhance stability, maximum stable gain and bandwidth of mm-wave CMOS PAs. The source inductance selection is conveniently investigated by the proposed admittance matrix condensation. In power splitting and combining part, a novel X-shape pattern-ground shielding is inserted in high turn ratio transformer to ameliorate wideband matching. Based on these techniques, a fully differential mm-wave PA was implemented in 65 nm low-power CMOS with 0.25 mm2 core area. The measurement results show that its differential drive gain and common mode rejection ratio are above 10 and 26 dB, respectively, in a wide frequency range of 41 to 61 GHz, while the power added efficiency (PAE) is still above 10.8% at 46–62 GHz. This CMOS PA also achieves 11.9 dBm output referred 1-dB compression point (P 1 dB) and 15.2 dBm saturated power (P sat) with 12.4% peak PAE. |
Starting Page | 410 |
Ending Page | 416 |
Page Count | 7 |
ISSN | 17518725 |
Volume Number | 11 |
e-ISSN | 17518733 |
Issue Number | Issue 3, Feb (2017) |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/iet-map/11/3 |
Alternate Webpage(s) | https://digital-library.theiet.org/content/journals/10.1049/iet-map.2016.0528 |
Journal | IET Microwaves, Antennas & Propagation |
Publisher Date | 2016-09-27 |
Access Restriction | Open |
Rights Holder | © The Institution of Engineering and Technology |
Subject Keyword | Admittance Matrix Condensation Algebra Amplifiers CMOS Integrated Circuit CMOS Transistor Frequency 41 GHz to 61 GHz Frequency 42 GHz to 62 GHz Inductors And Transformer Matrix Algebra Millimetre Wave Power Amplifiers Power Splitting Power Transformer Shielded Transformer Transistor-based Inductive Source Degeneration Wideband Millimetre-wave CMOS Power Amplifier X-shape Pattern-ground Shielding |
Content Type | Text |
Resource Type | Article |
Subject | Electrical and Electronic Engineering |
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