scispace - formally typeset
Patent

Circuit for boosting DC voltage

Wayne M. Struble
Reads0
Chats0
TLDR
In this paper, a bias circuit that includes a rectifier having an input, an output and a DC control voltage input, where the rectifier is configured to produce the output of a bias extractor, while providing a substantially high input impedance at the extractor input, is presented.
Abstract: 
A bias circuit that includes a rectifier having an input, an output and a DC control voltage input, wherein the rectifier is configured to produce the rectifier output, while providing a substantially high input impedance at the rectifier input, a rectified voltage from an alternating input signal applied at the rectifier input; and a bias extractor having an extractor input, a control voltage input and an extractor output, coupled to the rectifier output, and being configured to produce at the extractor output a DC voltage that is greater in magnitude than the DC control voltage input.

read more

Citations
More filters
Patent

Charge pump based power amplifier envelope power supply and bias power supply

Chris Levesque, +4 more
TL;DR: In this paper, a direct current (DC)-DC converter, which includes a charge pump-based radio frequency (RF) power amplifier (PA) envelope power supply and a PA bias power supply, is described.
Patent

Envelope power supply calibration of a multi-mode radio frequency power amplifier

Brian Baxter, +3 more
TL;DR: In this paper, an envelope power supply calibration of a multi-mode RF power amplifier (PA) was proposed to ensure adequate headroom when operating using one of multiple communications modes. But, the power supply was not restricted to provide a minimum allowable magnitude based on an RF signal level of the PA.
Patent

PA envelope power supply undershoot compensation

Hirofumi Honjo, +8 more
TL;DR: In this article, a step change from a high magnitude to a low magnitude that exceeds the step change limit is considered, which may cause the PA envelope power supply to undershoot.
Patent

Direct current (DC)-DC converter having a multi-stage output filter

Chris Levesque, +4 more
TL;DR: In this article, a direct current (DC)-DC converter that includes a first switching converter and a multi-stage filter is disclosed, which includes at least a first inductance (L) capacitance (C) filter and a second LC filter coupled in series between the first switching converters and a DC-DC converter output.
Patent

DC-DC converter current sensing

Jean-Christophe Berchtold, +6 more
TL;DR: In this paper, a sample-and-hold (SAH) current estimating circuit and a first switching power supply are described, where the first switch power supply selects the ON state of the series switching element, such that during the ramping signal peak, the switching element has a series current having a magnitude, which is about equal to a magnitude of the output current of the first SW output signal.
References
More filters
Patent

Switch Circuit and Method of Switching Radio Frequency Signals

Mark L. Burgener, +1 more
TL;DR: In this paper, a fully integrated RF switch is described including control logic and a negative voltage generator with the RF switch elements, which includes an oscillator, a charge pump, CMOS logic circuitry, level-shifting and voltage divider circuits, and an RF buffer circuit.
Journal ArticleDOI

A GaAs high-power RF single-pole double-throw switch IC for digital mobile communication system

K. Miyatsuji, +5 more
TL;DR: The high-power GaAs monolithic RF switch IC reported here handles over 5W (PldB: 37dBm) with insertion loss less than 1.0 dB using a circuit to feed forward the signal to the control gate.
Patent

High-frequency switch circuit

Y. Takahashi, +1 more
TL;DR: In this article, a high-frequency switch circuit has a plurality of highfrequency switches for passing and blocking a highfrequency signal between an input terminal and an output terminal depending on a control potential applied as a control signal.
Proceedings ArticleDOI

A high-power-handling GSM switch IC with new adaptive-control-voltage-generator circuit scheme

Keiichi Numata, +3 more
TL;DR: In this article, a high-power-handling switch circuit using a new adaptive-control-voltage-generator circuit (AVG) is proposed, which enables the internal control node voltages to be automatically increased in high input power conditions.
Patent

Gallium arsenide antenna switch

Edward T. Clark, +1 more
TL;DR: In this paper, an RF signal is transformed (12 and 12') to increase its current component, while reducing its voltage component below the voltage that would damage a GaAs switching device (16 or 16').