Abstract
Operation of a frequency sextupler (X6) as a radio frequency (RF) $E$ -band upconverting transmitter is experimentally demonstrated. An 8-phase-shift keying signal is digitally upconverted to 13.1-GHz intermediate frequency (IF). The resulting signal then goes through the X6 resulting in IF-to-RF upconversion to 78.6 GHz without the need for high-frequency oscillator, mixer, or modulator. A simple one-sixth phase retardation of the baseband signal is used as digital predistortion. A full signal processing chain is implemented at the digital receiver. Techniques to mitigate remaining nonlinearity and worsened phase noise are considered.
| Original language | English |
|---|---|
| Article number | 8272033 |
| Pages (from-to) | 177-179 |
| Number of pages | 3 |
| Journal | IEEE Microwave and Wireless Components Letters |
| Volume | 28 |
| Issue number | 2 |
| DOIs | |
| Publication status | Published - Feb 2018 |
| Externally published | Yes |
Keywords
- Data transmission
- digital predistortion (DPD)
- E-band
- frequency multiplier
- frequency sextupler
- multiplierbased transmitter
- nonlinearity
- phase noise
- phase retarder
- phase-noise mitigation
- phase-shift keying (PSK)
- postdistortion
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