Abstract
A Ka-band GaAs Monolithic Microwave Integrated Circuit (MMIC) 4-bit digital phase shifter for a soil moisture radiometer phased array antenna is presented. The phase shifter is comprised of GaAs pHEMT passive devices and high-pass/low-pass (HP/LP) and switched filter networks. The passive HEMT's gate is biased with 0 or -3 V to control the desired phase shifts. The simulation results demonstrate 11 ± 1 dB insertion loss (IL) and the input and output return loss (RL) is higher than 8.8 dB over the band of 36 - 38 GHz. The root mean square (RMS) phase error is smaller than 4° within the band. The phase shifter is designed using 0.15 µm GaAs pHEMT process. The phase shifter power consumption is almost zero. The chip size is about 2 mm × 1 mm, including the pads and scribe lines.
| Original language | English |
|---|---|
| Title of host publication | 2020 IEEE Eighth International Conference on Communications and Electronics (ICCE) |
| Editors | Saewoong Bahk, Phuoc Tran-Gia, Jan Van der Spiegel, Nguyen Xuan Quynh |
| Place of Publication | Piscataway NJ USA |
| Publisher | IEEE, Institute of Electrical and Electronics Engineers |
| Pages | 197-202 |
| Number of pages | 6 |
| ISBN (Electronic) | 9781728154701, 9781728154718 |
| ISBN (Print) | 9781728154695, 9781728154725 |
| DOIs | |
| Publication status | Published - 2020 |
| Event | International Conference on Communications and Electronics (HUT-ICCE) 2020 - Phu Quoc Island, Vietnam Duration: 13 Jan 2021 → 15 Jan 2021 Conference number: 8th https://ieeexplore-ieee-org.ezproxy.lib.monash.edu.au/xpl/conhome/9352035/proceeding (Proceedings) |
Conference
| Conference | International Conference on Communications and Electronics (HUT-ICCE) 2020 |
|---|---|
| Abbreviated title | HUT-ICCE 2020 |
| Country/Territory | Vietnam |
| City | Phu Quoc Island |
| Period | 13/01/21 → 15/01/21 |
| Internet address |
Keywords
- 0.15 µm GaAs pHEMT process
- GaAs MMIC
- Ka-band
- passive HEMTs
- passive phase shifter
- soil moisture radiometer
- switch-type
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