Abstract
A 1.15 GHz image rejection filter in 90 nm CMOS is presented. It consists of two band-pass filter stages and one band-stop filter stage, with the Q-enhancing and frequency stagger-tuning techniques to compensate the loss of low quality factor on-chip passive components and maintain enough bandwidth, respectively. The presented filter has been integrated in one K-band dual down-conversion super-heterodyne receiver and achieves 45 dB image rejection ratio at 140 MHz offset with >22 MHz signal bandwidth. The DC power consumption is 8.4 mW.
| Original language | English |
|---|---|
| Pages (from-to) | 48-53 |
| Number of pages | 6 |
| Journal | Microelectronics Journal |
| Volume | 84 |
| DOIs | |
| Publication status | Published - Feb 2019 |
Keywords
- CMOS
- Frequency stagger-tuning
- Image rejection filter
- Q-enhancing
- Super-heterodyne