Intel Corporation

Fujitsu Semiconductor Limited

Patrick Rakers

Omid Oliaei

Haolu Xie

David A Newman

Benjamin Gilsdorf

Mohammed Alam

Chi-Taou Robert Tsai

Manish N Shah

Tomoyuki Arai

A user equipment (UE), receiver and method are generally described herein. The UE may include a mixer, a local oscillator (LO) and an analog-to-digital converter (ADC). The mixer may downconvert a differential radio frequency (RF) signal using LO signals and provide downconverted signals to the ADC. The mixer may provide decoupled lowpass filtering. The lowpass filter capacitors may retain charge when discharging is completed. For each differential signal, the mixer may have an input pullup resistor, first switches receiving the signal and driven by different LO signals, second switches receiving signals from the first switches such that connected pairs of switches may have driven by different LO signals, an ADC input resistor, charging capacitors each connected between first switches driven by the same LO signal, and grounding capacitors each connected to second switches associated with different RF signal outputs and driven by different LO signals.

High performance receiver architecture and methods thereof

A method may include receiving a positive in-phase ('I')-channel signal ('I+ signal'), a negative I-channel signal (&#x201c;I&#x2212; signal&#x201d;), a positive quadrature-phase (&#x201c;Q&#x201d;)-channel signal (&#x201c;Q+ signal&#x201d;), and a negative Q-channel signal (&#x201c;Q&#x2212; signal&#x201d;). The method may further include outputting a truncated I+ signal, a truncated I&#x2212; signal, a truncated Q+ signal, and a truncated Q&#x2212; signal. The method may further include generating the truncated I+ signal based on the I+ and Q+ signals and a complement of the truncated Q&#x2212; signal, generating the truncated I&#x2212; signal based on the I&#x2212; and Q&#x2212; signals and a complement of the truncated Q+ signal, generating the truncated Q+ signal based on the I&#x2212; and Q+ signals and a complement of the truncated I+ signal, and generating the truncated Q&#x2212; signal based on the I+ and Q&#x2212; signals and a complement of the truncated I&#x2212; signal.

Signal duty cycle reduction

A shield for differential transmission lines formed in a first metal layer may include one or more floating shields, each floating shield comprising an upper-side tile formed in a second metal layer of the integrated circuit adjacent to the first metal layer, a lower-side tile formed in a third metal layer of the integrated circuit adjacent to the first metal layer and non-adjacent to the second metal layer, and at least one via configured to electrically couple the upper-side tile at an end of the length of the upper-side tile to the lower-side tile and at an end of the length of the lower-side tile.

Differential transmission line shielded by two or more spaced groups of shields

In accordance with embodiments of the present disclosure, a continuous-time incremental analog-to-digital converter (ADC) may include a plurality of resettable integrators and a feed-in gain element. Each integrator may be configured to convert a sum of signals received at its input to a signal indicative of an integral over time of the sum of signals. The plurality of integrators may include a first-stage integrator configured to receive at its input the baseband signal and a final-stage integrator configured to produce at its output a final-stage analog signal. The plurality of integrators may be arranged in a cascade configuration such that an output of each of the plurality of integrators other than the final-stage integrator is coupled to the input of a subsequent integrator. The feed-in gain element may be coupled between the input of the first-stage integrator and the input of another integrator of the plurality of integrators.

Continuous-time incremental analog-to-digital converter

In accordance with some embodiments of the present disclosure, a multi-band transmitter comprises a plurality of band paths with each band path configured for a different frequency range. Each band path comprises a modulator configured to modulate a data signal onto a carrier signal associated with the frequency range of the band path to generate a radio frequency (RF) signal associated with the band path and frequency range of the band path. Each band path also comprises a step-down balun that includes an input coil configured to receive the RF signal from the modulator. Each band path further comprises a tuner configured to tune the input coil to the frequency range of the band path. The tuner is also configured to compensate for off-state conduction of switches of the tuner to reduce non-linear tuning effects of the balun associated with the off-state conduction.

System and method for a multi-band transmitter

A technique for improving the linearity of a mixer is disclosed. A converter may include a mixer comprising a first metal-oxide semiconductor field-effect transistor (MOSFET) having a gate, a first conducting terminal coupled to an input of the converter, and a second conducting terminal coupled to an output of the converter, and a mixer driver having a first output coupled to the gate of the first MOSFET, the mixer driver configured to receive a local-oscillator signal having a first phase and a second phase, drive the first MOSFET off during the first phase of the local-oscillator signal, drive the first MOSFET on for a first period of time in response to a transition from the first phase of the local-oscillator signal to the second phase of the local-oscillator signal, and force the gate of the first MOSFET into a high impedance state for a second period of time during the second phase of the local-oscillator signal and after the expiration of the first period of time.

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Scottsdale, AZ, United States of America

Patrick Rakers