Abstract
A novel dc-offset compensation technique for monostatic frequency-modulated continuous-wave (FMCW) transceivers is presented. This approach uses the intermediate frequency (IF) port of the active direct-conversion mixer to access its collector resistors. Additional external variable resistors in parallel connection can vary the total load resistance in each branch and hence compensate or generate a dc-offset voltage at the output. Since the wiring is located on the low-frequency side of the mixer, the variable resistors can also be external (off-chip), which offers great flexibility and eases application. The concept was successfully tested with an integrated 77 GHz automotive radar mixer fabricated in a 200 GHz fT Silicon Germanium (SiGe) bipolar technology.
| Original language | English |
|---|---|
| Article number | 5535199 |
| Pages (from-to) | 525-527 |
| Number of pages | 3 |
| Journal | IEEE Microwave and Wireless Components Letters |
| Volume | 20 |
| Issue number | 9 |
| DOIs | |
| Publication status | Published - Sept 2010 |
Fields of science
- 202019 High frequency engineering
- 202033 Radar technology
JKU Focus areas
- Mechatronics and Information Processing