A 90 GHz Broadband Balanced 8-Way Power Amplifier for High Precision FMCW Radar Sensors in 65-nm CMOS
We present a W-band 8-way wideband power amplifier (PA) for a high precision frequency modulated continuous wave (FMCW) radar in 65-nm CMOS technology. To achieve a broadband operation with an improved output power for a high range resolution and high distance coverage of FMCW radar sensors, a balan...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-04-01
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| Series: | Sensors |
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| Online Access: | https://www.mdpi.com/1424-8220/22/9/3114 |
| _version_ | 1827671532331073536 |
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| author | Hyeonseok Lee Van-Son Trinh Jung-Dong Park |
| author_facet | Hyeonseok Lee Van-Son Trinh Jung-Dong Park |
| author_sort | Hyeonseok Lee |
| collection | DOAJ |
| description | We present a W-band 8-way wideband power amplifier (PA) for a high precision frequency modulated continuous wave (FMCW) radar in 65-nm CMOS technology. To achieve a broadband operation with an improved output power for a high range resolution and high distance coverage of FMCW radar sensors, a balanced architecture is employed with the Lange coupler which naturally combines the output powers from two 4-way push-pull PAs. By utilizing a transformer-based push-pull structure with a cross-coupled capacitive neutralization technique, the gate-drain capacitance of the 4-way PA is compensated for the stabilization with an improved power gain. Interstage matching was performed with transformers for a reduced loss from the matching network and minimal area occupation. The implemented balanced 8-way PA achieved a saturated output power (<i>P<sub>sat</sub></i>) of 16.5 dBm, a 1-dB compressed output power (OP<sub>1dB</sub>) of 13.3 dBm, a power-added efficiency (PAE) of 9.9% at 90 GHz and 3-dB power bandwidth was 20.4 GHz (79.2–99.6 GHz). |
| first_indexed | 2024-03-10T03:44:09Z |
| format | Article |
| id | doaj.art-a7e2339bea0141deb8fd08d27bbc18f4 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-03-10T03:44:09Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-a7e2339bea0141deb8fd08d27bbc18f42023-11-23T09:13:38ZengMDPI AGSensors1424-82202022-04-01229311410.3390/s22093114A 90 GHz Broadband Balanced 8-Way Power Amplifier for High Precision FMCW Radar Sensors in 65-nm CMOSHyeonseok Lee0Van-Son Trinh1Jung-Dong Park2Division of Electronics and Electrical Engineering, Dongguk University, Seoul 04620, KoreaDivision of Electronics and Electrical Engineering, Dongguk University, Seoul 04620, KoreaDivision of Electronics and Electrical Engineering, Dongguk University, Seoul 04620, KoreaWe present a W-band 8-way wideband power amplifier (PA) for a high precision frequency modulated continuous wave (FMCW) radar in 65-nm CMOS technology. To achieve a broadband operation with an improved output power for a high range resolution and high distance coverage of FMCW radar sensors, a balanced architecture is employed with the Lange coupler which naturally combines the output powers from two 4-way push-pull PAs. By utilizing a transformer-based push-pull structure with a cross-coupled capacitive neutralization technique, the gate-drain capacitance of the 4-way PA is compensated for the stabilization with an improved power gain. Interstage matching was performed with transformers for a reduced loss from the matching network and minimal area occupation. The implemented balanced 8-way PA achieved a saturated output power (<i>P<sub>sat</sub></i>) of 16.5 dBm, a 1-dB compressed output power (OP<sub>1dB</sub>) of 13.3 dBm, a power-added efficiency (PAE) of 9.9% at 90 GHz and 3-dB power bandwidth was 20.4 GHz (79.2–99.6 GHz).https://www.mdpi.com/1424-8220/22/9/3114frequency-modulated continuous-wave (FMCW)CMOSbroadbandtransformer-based combinerpower amplifier (PA)W-band |
| spellingShingle | Hyeonseok Lee Van-Son Trinh Jung-Dong Park A 90 GHz Broadband Balanced 8-Way Power Amplifier for High Precision FMCW Radar Sensors in 65-nm CMOS Sensors frequency-modulated continuous-wave (FMCW) CMOS broadband transformer-based combiner power amplifier (PA) W-band |
| title | A 90 GHz Broadband Balanced 8-Way Power Amplifier for High Precision FMCW Radar Sensors in 65-nm CMOS |
| title_full | A 90 GHz Broadband Balanced 8-Way Power Amplifier for High Precision FMCW Radar Sensors in 65-nm CMOS |
| title_fullStr | A 90 GHz Broadband Balanced 8-Way Power Amplifier for High Precision FMCW Radar Sensors in 65-nm CMOS |
| title_full_unstemmed | A 90 GHz Broadband Balanced 8-Way Power Amplifier for High Precision FMCW Radar Sensors in 65-nm CMOS |
| title_short | A 90 GHz Broadband Balanced 8-Way Power Amplifier for High Precision FMCW Radar Sensors in 65-nm CMOS |
| title_sort | 90 ghz broadband balanced 8 way power amplifier for high precision fmcw radar sensors in 65 nm cmos |
| topic | frequency-modulated continuous-wave (FMCW) CMOS broadband transformer-based combiner power amplifier (PA) W-band |
| url | https://www.mdpi.com/1424-8220/22/9/3114 |
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