| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 545694 | Microelectronics Journal | 2014 | 6 Pages |
Abstract
A fully integrated continuous-time bandpass delta-sigma modulator (BPDSM) fabricated in a 0.25 μm SiGe BiCMOS is presented. It consists of a two-stage second-order resonator, high-speed comparator, multi-feedback current digital-to-analog converter, and an output buffer. The input frequency can be tuned from 3.55 to 3.9 GHz at a 9.5 GHz fixed sampling clock frequency. This modulator dissipates 109 mA from a 3.3 V power supply. The peak signal-to-noise ratio (SNR) of the sine-wave input is 37.3 dB in a 20 MHz channel bandwidth, and the error vector magnitude (EVM) of a 64QAM long-term evolution (LTE) downlink signal is 5.94% with a 10.5 dB peak-to-average-power ratio (PAPR).
Related Topics
Physical Sciences and Engineering
Computer Science
Hardware and Architecture
Authors
Bong-Hyuk Park, Seung-Hyun Jang, Philip Ostrovskyy, Jae-Ho Jung,