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| Content Provider | IEEE Xplore Digital Library |
|---|---|
| Author | Shuw-Guann Lin Da-Chiang Chang Ying-Zong Juang Hwann-Kaeo Chiou |
| Copyright Year | 2015 |
| Description | Author affiliation: Nat. Chip Implementation Center, Nat. Appl. Res. Labs., Hsinchu, Taiwan (Shuw-Guann Lin; Da-Chiang Chang; Ying-Zong Juang) || Dept. of Electr. Eng., Nat. Central Univ., Jhongli, Taiwan (Hwann-Kaeo Chiou) |
| Abstract | As generating the wideband modulation signals, the signal quality is usually degraded by many impairments such as I/Q path delay, non-flat RF frequency response and etc. In this paper, the authors propose two methods by using Keysight SystemVue™ to create the modulation signals and download them to an arbitrary waveform generator (AWG) for further calibration. To compare these two methods, a 64 QAM modulation waveform with a bandwidth over 1GHz was evaluated. The first method is multi-tone scalar calibration which improves the error vector magnitude (EVM) from 5.3 % to 4.2 %. The other one is vector calibration which improves the EVM from 5.3% to 1.1%. Finally, these signals are used to measure the system performance of an amplifier. As found, the modulation signal with vector calibration can show the more exact effect of AM/AM and AM/PM on EVM of the amplifier than scalar does. |
| Starting Page | 1547 |
| Ending Page | 1550 |
| File Size | 434808 |
| Page Count | 4 |
| File Format | |
| ISBN | 9782874870392 |
| DOI | 10.1109/EuMC.2015.7346071 |
| Language | English |
| Publisher | Institute of Electrical and Electronics Engineers, Inc. (IEEE) |
| Publisher Date | 2015-09-07 |
| Publisher Place | France |
| Access Restriction | Subscribed |
| Rights Holder | EuMA |
| Subject Keyword | Calibration Modulation Wideband Signal generators Predistortion Finite impulse response filters wideband modulation 64 QAM arbitrary waveform generator scalar calibration vector calibration |
| Content Type | Text |
| Resource Type | Article |
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