Skyworks Solutions, Inc.

Intermec IP Corporation

Rockwell International Corporation

Leo John Wilz

James Phillip Young

David Steven Ripley

Matthew Lee Banowetz

Jonathan Christian Crandall

Ali J Mahmud

Robert J Baeten

Brian E Petted

Jeffrey P Ortiz

A switch control circuit includes a positive voltage bias node, a voltage-regulated positive supply rail coupled to the positive voltage bias node, a charge pump coupled to a charge pump supply node, and a current source positive supply rail coupled to the charge pump supply node and configured to supply the charge pump.

Switch biasing using isolated negative and positive bias circuitry

A switch bias control circuit includes a level shifter and voltage regulator circuitry configured to receive a voltage reference signal, provide a first voltage output at a first node and provide a second voltage output at a second node, the first node and the second node being at least partially isolated from one another. coupling circuitry couples the first node to the level shifter and couples the second node to a negative voltage generator.

Radio frequency switches with reduced clock noise

According to one aspect, embodiments of the invention provide a wireless device comprising an overstress indicator circuit including a sense circuit configured to monitor a parameter of the wireless device and generate a sense signal corresponding to the parameter, a detection circuit configured to receive the sense signal from the sense circuit and generate a detection signal in response to a determination that the sense signal is indicative of an overstress condition in the device, an interface circuit, and a memory circuit coupled to the detection circuit and the interface circuit and configured to store an overstress condition indication for access via the interface circuit in response to receiving the detection signal, at least one power amplifier coupled to the interface circuit, and a transceiver coupled to the at least one power amplifier and configured to produce an RF transmit signal and to receive an RF receive signal.

Wireless device with overstress indicator

According to one aspect, embodiments of the invention provide an overstress indicator circuit comprising a sense circuit configured to monitor a parameter of a device and generate a sense signal corresponding to the parameter, a detection circuit coupled to the sense circuit and configured to receive the sense signal from the sense circuit and generate a detection signal at a first level in response to a determination that the sense signal is indicative of an overstress condition in the device, an interface circuit, and a memory circuit coupled to the detection circuit and the interface circuit and configured to store an overstress condition indication for access via the interface circuit in response to receiving the detection signal at the first level.

Overstress indicator

A communications transceiver incorporating diversity architecture for utilization with a wireless communications network and having improved receiver sensitivity is disclosed. In a first embodiment of the invention, the communications transceiver comprises a pair of antennas connected to a pair of amplifiers and a selector connected between the amplifiers and the intermediate frequency stage of the transceiver for providing selective operation of the communications transceiver with either antenna of the pair of antennas. In a second embodiment of the invention, the communications transceiver comprises a pair of antennas, a pair of amplifiers and a selector disposed between the first amplifier and the intermediate frequency stage of the transceiver and between the second antenna and the second amplifier for providing selective operation of the communications transceiver with either of the antennas. The architecture of the communications transceiver of the present invention provides improved receiver selectivity, improved noise figure, improved signal-to-noise ration, and improved power output.

Receiver sensitivity for transceiver having diversity architecture

A hybrid shield and antenna unit for a printed circuit board is disclosed. A shielding enclosure for providing RF and electromagnetic shielding of the electronic components of a circuit board is integrated with an antenna as a single unit. The hybrid shield and antenna combination may be fabricated as a single unit to provide for reduced steps in the manufacturing process thereby leading to improved economy. The hybrid shield and antenna includes a shielding enclosure for providing RF and electromagnetic shielding of an electronic component, and an antenna disposed at an end of said central enclosure, wherein the antenna and the central enclosure comprise a single continuous unit.

Hybrid printed circuit board shield and antenna

A biasing network for use in conjunction with a mixer employing field effect transistors which provides for minimum conversion loss over a range of process and temperature conditions. The biasing circuit includes a first field effect transistor having a small gate periphery which is configured as a current source, a second or reference field effect transistor having a gate periphery substantially equal to the gate peripheries of the transistors in the mixer to which the biasing circuit is providing DC biasing voltages and a voltage divider which is functional in defining operating conditions for the reference transistor.

Growing community of inventors

Cedar Rapids, IA, United States of America

Leo John Wilz