Abstract
This paper presents a compact 77-GHz four-way differential power combined power amplifier for automotive radar application. At E-band, the insertion loss of matching network and power combining network are the limiting factor for the power amplifier's performance. In this work, the insertion loss of the matching networks is reduced by taking advantage of the proposed coplanar waveguide differential transmission line with floating substrate noise shielding grids. The voltage-current power combining method that takes care of impedance matching and power combining is adopted to decrease the insertion loss from power combining and output matching network. The power amplifier is implemented in a 40 nm CMOS process. From 69 to 85 GHz, the power amplifier delivers more than 19 dBm output power with the maximum $P_{sat}$ of 19.7 GHz at 77 GHz. The final layout power amplifier achieves 19.4 dB peak small signal gain, and the maximum PAE is 22.7 %.
| Original language | English |
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| Title of host publication | 2021 IEEE MTT-S International Wireless Symposium, IWS 2021 - Proceedings |
| Publisher | Institute of Electrical and Electronics Engineers |
| Number of pages | 3 |
| ISBN (Electronic) | 978-1-6654-3527-7 |
| DOIs | |
| Publication status | Published - 10 Aug 2021 |
| Event | 2021 IEEE MTT-S International Wireless Symposium, IWS 2021 - ZOOM Conference, Nanjing, China Duration: 23 May 2021 → 26 May 2021 |
Conference
| Conference | 2021 IEEE MTT-S International Wireless Symposium, IWS 2021 |
|---|---|
| Country/Territory | China |
| City | Nanjing |
| Period | 23/05/21 → 26/05/21 |
Keywords
- Automotive radar
- CMOS
- Coplanar waveguide differential transmission line
- E-band
- Power amplifier
- Voltage-current power combining