Abstract
In a software-defined radio (SDR) receiver it is desirable to minimize RF band-filtering for flexibility, size and cost reasons, but this leads to increased out-of-band interference (OBI). Besides harmonic and intermodulation distortion (HD/IMD), OBI can also lead to blocking and harmonic mixing. A wideband LNA [1, 2] amplifies signal and interference with equal gain. Even a low gain of 6dB can clip 0dBm OBI to a 1.2V supply, blocking the receiver. Hard-switching mixers not only translate the wanted signal to baseband but also the interference around LO harmonics. Harmonic rejection (HR) mixers have been used [3, 1, 4], but are sensitive to phase and gain mismatch. Indeed the HR in [4] shows a large spread, whereas other work only shows results from one chip [3, 1]. This paper describes techniques to relax blocking and HD/IMD, and make HR robust to mismatch.
| Original language | English |
|---|---|
| Title of host publication | IEEE International Solid-State Circuits Conference |
| Place of Publication | Piscataway |
| Publisher | IEEE |
| Pages | 232-233 |
| Number of pages | 2 |
| ISBN (Print) | 978-1-4244-3458-9 |
| DOIs | |
| Publication status | Published - 8 Feb 2009 |
| Event | IEEE International Solid-State Circuits Conference, ISSCC 2009 - San Francisco, United States Duration: 8 Feb 2009 → 12 Feb 2009 |
Conference
| Conference | IEEE International Solid-State Circuits Conference, ISSCC 2009 |
|---|---|
| Abbreviated title | ISSCC |
| Country/Territory | United States |
| City | San Francisco |
| Period | 8/02/09 → 12/02/09 |
Keywords
- METIS-263872
- IR-65508
- EWI-15404
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