Avago Technologies International Sales Pte. Limited

University of Michigan

Yonghyun Shim

Jun Cao

Delong Cui

Guansheng Li

Mina Raieszadeh

YU-Ming Ying

Hyung-Joon Jeon

Muzhi Wang

In some implementations, a circuitry may include a series of symmetrical stages with an initial stage in the series coupled to an input signal having a first plurality of phases and an output stage in the series coupling an output signal comprising a second plurality of phases to a calibration engine, where a quantity of the phases in the output signal is increased based at least on a quantity of the symmetrical stages and a quantity of the first plurality of the phases in the input signal. In addition, the circuitry may include implementations, where the calibration engine calibrates a frequency of the circuitry within a range based at least on a target frequency. The circuitry may include implementations, where the calibration engine outputs a current provided to the series, where the output current can be based at least on a calibrated frequency.

Method and system for injection locked divider with frequency calibration

A system includes a first phase interpolator, a second phase interpolator, and a circuit. The circuit is configured to receive a first signal and a second signal provided by the first phase interpolator and a third signal and a fourth signal provided by the second phase interpolator. The first circuit is configured to provide at least eight phase signals, each of the eight phase signals being at a respective phase angle in response to the first signal, the second signal, the third signal and the fourth signal.

Systems for and methods of phase interpolation

A system includes a sampler, a receiver phase-locked loop circuit configured to provide one or more input clock signals, and a phase interpolation circuit coupled to the receiver phase-locked loop circuit and the sampler. The phase interpolation circuit further includes a first phase interpolator configured to generate a first recovered clock signal based on the one or more input clock signals and a first code, and a second phase interpolator configured to generate a second recovered clock signal based on the one or more input clock signals and a second code, wherein the second code has an interpolation code offset from the first code, wherein the interpolation code offset corresponds to a phase shift in the second recovered clock signal relative to the first recovered clock signal, wherein the outputs of the first phase interpolator and second phase interpolator are configured to be merged.

Variation tolerant linear phase-interpolator

An RF switch is provided with a direct heating method. The RF switch is comprised of two RF electrodes disposed on opposing sides of a phase change element. Depending on the state of the phase change material, the RF electrodes form a conductive path through the phase change material for an RF signal. To control the state of the phase change material, the RF switch further includes a heater formed from two heater electrodes. The two heater electrodes are configured to draw a current through the phase change element in a direction transverse to the conductive path.

Directly heated RF phase change switch

A wide range tunable capacitor bank is provided. The capacitor bank comprises a variable capacitor, the capacitance value of which is adjustable within a predetermined capacitance range defined by a minimum capacitance value and a maximum capacitance value. The capacitor bank further comprises one or more switched capacitors each electrically connected in circuit to the variable capacitor. The variable capacitor is configured to allow the capacitance value thereof to be adjusted within the predetermined capacitance range and the one or more switched capacitors are configured to be selectively actuated to permit continuous tuning of the capacitor bank over a second capacitance range that is greater than the predetermined capacitance range. Applications in which the capacitor bank may be implemented, and a method of fabricating an integrated system comprising a plurality of passive components, such as, for example, those of the capacitor bank and high quality factor inductors, are also provided.

Growing community of inventors

Irvine, CA, United States of America

Yonghyun Shim