An LC Quadrature VCO With Compensated Coupling Networks for Low Supply Sensitivity and I/Q Phase Enhancement
Abstrak
ABSTRACT An LC quadrature voltage‐controlled oscillator (LC‐QVCO) with novel compensated coupling networks to achieve both low supply sensitivity and quadrature phase enhancement is proposed. Designed and fabricated in a standard 0.18‐μm CMOS process, the proposed QVCO improves the supply noise rejection by more than 16.72 dB compared with the conventional LC‐QVCO and achieves quadrature phase error of < 0.86° within the frequency tuning range from 3.32 to 3.52 GHz, whereas occupying a core area of 504 × 400 μm2 and consuming 3.2 mA including the bias circuitry, from a 1.8‐V supply voltage. The phase noise is measured to be −110.64 dBc/Hz at 1 MHz offset and −130.49 dBc/Hz at 10 MHz offset from the high‐band carrier frequency at 3.52 GHz.
Topik & Kata Kunci
Penulis (6)
Yukun He
Renjie Tang
Ka'nan Wang
Dan Li
Li Geng
Xiaoyan Gui
Akses Cepat
- Tahun Terbit
- 2025
- Sumber Database
- DOAJ
- DOI
- 10.1049/mia2.70005
- Akses
- Open Access ✓