Abstract:
Multimode radio frequency (RF) amplifier systems and techniques are disclosed. In one embodiment, a multimode radio frequency (RF) amplifier system has a first RF amplifier and a second RF amplifier. The first RF amplifier may support a first RF communication standard. The second RF amplifier may support a second RF communication standard. The first RF amplifier includes an auxiliary circuit. The auxiliary circuit may provide a service or a utility to a second RF amplifier. For example, the auxiliary circuit may generate a supply voltage to power the second RF amplifier.
Abstract:
Aspects disclosed in the detailed description include an antenna on a device assembly. A device assembly includes a silicon device layer having at least one antenna. The device assembly also includes a polymer substrate that is formed with insulating material that does not interfere with the at least one antenna in the silicon device layer. As a result, it is unnecessary to shield the at least one antenna from the polymer substrate, thus allowing radio frequency (RF) signals radiating from the at least one antenna to pass through the polymer substrate.
Abstract:
A front end radio architecture (FERA) with power management is disclosed. The FERA includes a first power amplifier (PA) block having a first-first PA for amplifying first-first signals and a first-second PA for amplifying first-second signals. Also included is a second PA block having a second-first PA for amplifying second-first signals and a second-second PA for amplifying second-second signals. At least one power supply is adapted to selectively supply power to the first-first PA and the second-second PA through a first path. The power supply is also adapted to selectively supply power to the first-second PA and the second-first PA through a second path. A control system is adapted to selectively enable and disable the first-first PA, the first-second PA, the second-first PA, and the second-second PA.
Abstract:
Embodiments of bus interface systems are disclosed. In one embodiment, a bus interface system includes a master bus controller and a slave bus controller coupled along a bus line. The master bus controller is configured to generate an input data signal that is received by the slave bus controller along the bus line. The slave bus controller includes power conversion circuitry configured to convert the input data signal from the master bus controller into a supply voltage. By providing the power conversion circuitry, the slave bus controller is powered using the input data signal and without requiring an additional bus line to transfer a supply voltage to the slave bus controller.
Abstract:
A bus interface system is disclosed that includes a master bus controller and a slave bus controller that are coupled by a bus line. The slave bus controller includes a decoder that allows for data to be transmitted along just the bus line. The decoder includes an oscillator, a first counter, and a comparison circuit. The oscillator is configured to be enabled by data pulses defined by the input data signal and generate oscillation pulses while enabled. The first counts the oscillation pulses and indicates a number of the oscillation pulses generated during a time slot. The comparison circuit is configured to this number with a reference number and generate a data output that represents a first logical value in response to the number being greater than the reference parameter and represents a second logical value in response to the number being less than the reference parameter.
Abstract:
A front end radio architecture (FERA) with power management is disclosed. The FERA includes a first power amplifier (PA) block having a first-first PA for amplifying first-first signals and a first-second PA for amplifying first-second signals. Also included is a second PA block having a second-first PA for amplifying second-first signals and a second-second PA for amplifying second-second signals. At least one power supply is adapted to selectively supply power to the first-first PA and the second-second PA through a first path. The power supply is also adapted to selectively supply power to the first-second PA and the second-first PA through a second path. A control system is adapted to selectively enable and disable the first-first PA, the first-second PA, the second-first PA, and the second-second PA.
Abstract:
The disclosure relates to bus interface systems. In one embodiment, the bus interface system includes a bus line along with a master bus controller and a slave bus controller coupled to the bus line. In order to start a data frame, the master bus controller is configured to generate a sequence of data pulses along the bus line such that the sequence of data pulses is provided in accordance to a start of sequence (SOS) pulse pattern. The slave bus controller is configured to recognize that the sequence of data transmitted along the bus line by the master bus controller has been provided in accordance with the SOS pulse pattern. In this manner, the slave bus controller can detect when the master bus controller has started a new data frame. As such, the exchange of information through data frames can be synchronized along the bus line with requiring an additional bus line for a clock signal.
Abstract:
An efficient power transfer power amplifier (PA) architecture is disclosed that includes a first PA, a first impedance transformation network (ITN) coupled to the first PA, a second PA, and a second ITN coupled to the second PA. A switching network having a plurality of load outputs along with a first switch input coupled to a first impedance output of the first ITN and a second switch input coupled to a second impedance output of the first ITN, a third switch input coupled to a third impedance output of the second ITN, and a fourth switch input coupled to a fourth impedance output of the second ITN. A control system is adapted to control the switching network to switch signals at the first, second, third, and fourth switch inputs such that select ones of the signals travel paths having matching impedances to loads coupled to the plurality of load outputs.
Abstract:
In one embodiment, saturation of the control system of a power amplifier is limited by comparing a control voltage at a first control node against a scaled battery voltage, and then drawing an error current away from the first control node when the control voltage exceeds the scaled battery voltage. The first control node may be located after a trans-conductance amplifier in a feedback control system.
Abstract:
Disclosed is a digital communication control system having a serial bus buffer that includes a primary interface adapted to support serial communication over a primary bus, a buffered interface adapted to support serial communication over a buffered bus, and a controller coupled between the primary bus and the buffered bus. The primary bus is coupled to a first device and at least one second device and the buffered bus is coupled to at least one third device. The controller is adapted to receive a first data signal and a clock signal at the primary interface and replicate the first data signal and the clock signal at the buffered interface.