This paper presents a low-power high-bit-rate phase modulator based on a digital PLL with
single-bit TDC and two-point injection scheme. At high bit rates, this scheme requires a …

This paper presents a 60 GHz, 16% tuning range VCO, and a 40 GHz, 18 bits, 14% tuning
range DCO incorporating variable inductor (VID) techniques. The variable inductor …

In this work, we implemented and evaluated a fully integrated 2.4 GHz CMOS RF transceiver
using various low-power techniques for low-rate wireless personal area network (IEEE …

The past several years have successfully brought all-digital techniques to the RF frequency
synthesis, which could arguably be considered one of the last strong bastions of the …

We propose a new multirate architecture of an all-digital PLL (ADPLL) featuring
phase/frequency modulation capability. While the ADPLL approach has already proven its …

This paper discusses the circuits and system design methodology of a highly-efficient
wideband RF polar transmitter (TX) using the envelope-tracking (ET) technique for mobile …

We present a highly efficient RF transmitter over broad average power range using a
multilevel envelope-tracking power amplifier (ML-ET PA). The ML-ET PA delivers enhanced …

A novel digital-intensive hybrid transmitter (TX) architecture is presented, combining
conventional inphase and quadrature (I/Q) with constrained phase modulation. The …

A low-power, multimode polar transmitter based on a two-point injection PLL with a
linearized VCO is implemented in 65-nm CMOS technology. A wideband feedback loop …

Radio transmitters are evolving towards digital-intensive solutions to exploit reconfigurability
and benefit from CMOS process scaling. Outphasing has been identified as a suitable …