Shiyuan Zheng

TL;DR: A mm-wave subharmonic injection-locked (SHIL) fractional-N frequency synthesizer for wireless multiband point-to-point backhaul communications and the proposed ILFM chain employs higher-order LC tanks to generate a rippled phase response over a wide frequency range to significantly enhance the locking range and to eliminate expensive mm- wave frequency calibration loops.

TL;DR: The proposed architecture is composed of a digital interpolation filter for up-sampling of the input amplitude-control word (ACW), a 9-bit switched-capacitor array for the digital polar modulation (DPM), and a 6-bit PA array to achieve the output power range for the target applications.

TL;DR: This paper presents a single-chip digital-intensive polar transmitter for WCDMA and WLAN integrating a low-phase-noise all-digital phase-locked loop, a digitally-controlled wideband phase/amplitude modulator, and a calibration-free high-linearity power amplifier.

TL;DR: In this article, a wideband quadrature digitally-controlled oscillator (QDCO) operates in Class-C mode with embedded phase shifters for better phase noise and I-Q accuracy.

TL;DR: A 0.9–5.8-GHz receiver RF front-end integrating a dual-band low-noise transconductance amplifier (LNTA), a passive harmonic-rejection down-conversion mixer, and an all-digital frequency synthesizer for software-defined radios are presented.