The methods and devices of the described technology each have several aspects, no single
one of which is solely responsible for its desirable attributes. In one aspect, a method of …

Apparatus and methods for phase synchronization of phase locked loops (PLLs) are
provided. In certain configurations, an RF communication system includes a PLL that …

Systems, methods, and circuitries are disclosed for gener ating a desired signal from a
received signal. In one example a signal cancellation system includes local oscillator (LO) …

A transmission module is provided that includes a transmit ter, a loopback receiver, and a
QEC controller. The QEC controller identifies quadrature imbalance in the transmitter based …

Apparatus and methods for timing offset compensation of frequency synthesizers are
provided herein. In certain embodiments, an electronic system includes a frequency …

Apparatus and methods for transceiver calibration are pro vided. In certain configurations, a
transceiver includes a transmit channel and an observation channel. The transmit channel …

(57) ABSTRACT A novel phase locked loop design utilizing novel phase frequency detector,
charge pump, loop filter and voltage controlled oscillator is disclosed. The phase-frequency …

Systems and methods for high speed communications are described herein. In certain
aspects, the systems and meth ods include innovative transceiver architectures and tech …

Apparatus and methods for compensating radio frequency (RF) transmitters for local
oscillator (LO) leakage are pro vided herein. In certain configurations herein, a transmitter …

Apparatus and methods for phase synchronization of phase locked loops (PLLs) are
provided. In certain configurations, an RF communication system includes a PLL that …