Patent application number | Description | Published |
20110298280 | APPARATUS AND METHOD FOR VARIABLE VOLTAGE DISTRIBUTION - Apparatus and methods for providing regulated voltages are disclosed. Using a single voltage regulator, a plurality of regulated voltages can be generated with a voltage distribution function. In addition, variable voltage control elements can be used to adjust a regulated voltage, thereby providing a variable regulated voltage. Together, voltage distribution and variable voltage control can create variable voltage distribution of regulated voltages. These regulated voltages can be used in a variety of applications, for example, as a bias voltage for a power amplifier. | 12-08-2011 |
20110298432 | APPARATUS AND METHOD FOR VARIABLE VOLTAGE FUNCTION - Apparatus and methods for providing variable regulated voltages are disclosed. Variable voltage control elements can adjust a regulated voltage provided by a single voltage regulator, thereby providing a variable regulated voltage. The regulated voltage can be used in a variety of applications, for example, as a bias voltage for a power amplifier. | 12-08-2011 |
20110298435 | APPARATUS AND METHOD FOR VOLTAGE DISTRIBUTION - Apparatus and methods for providing regulated voltages are disclosed. Using a single voltage regulator, a plurality of regulated voltages can be generated with a voltage distribution function. These regulated voltages can be used in a variety of applications, for example, as a bias voltage for a power amplifier. In addition, the distributed regulated voltages can implement a variety of functions, such as selectively enabling or disabling power amplifiers. | 12-08-2011 |
20110298444 | APPARATUS AND METHOD FOR DIFFUSION SENSING - Apparatuses and methods for diffusion sensing are disclosed. In one embodiment, an apparatus includes a complimentary metal oxide semiconductor (CMOS) switch and a switch sense block. The switch includes a gate, a drain, a source, and a well. The source and drain are formed in the well. The gate is formed adjacent the well between the source and drain, and the source is configured to receive a bias voltage from a power amplifier. The switch sense block is configured to measure a signal indicative of the voltage of at least one of the source or drain voltage of the switch and to generate an output signal based on the measurement. | 12-08-2011 |
20110298537 | VOLTAGE DISTRIBUTION FOR CONTROLLING CMOS RF SWITCH - Disclosed are voltage distribution device and method for controlling CMOS-based devices for switching radio frequency (RF) signals. In certain RF devices such as mobile phones, providing different amplification modes can yield performance advantages. For example, a capability to transmit at low and high power modes typically results in an extended battery life, since the high power mode can be activated only when needed. Switching between such amplification modes can be facilitated by one or more switches formed in an integrated circuit and configured to route RF signal to different amplification paths. In certain embodiments, such RF switches can be formed as CMOS devices, and can be based on triple-well structures. In certain embodiments, various bias voltages applied to such a CMOS RF switch can be facilitated by a voltage distribution component. | 12-08-2011 |
20110298559 | APPARATUS AND METHOD FOR DIRECTIONAL COUPLING - Apparatuses and methods for directional coupling are disclosed. In one embodiment, an apparatus includes a directional coupler, a termination impedance, a switch, and a control block. The directional coupler includes a power input terminal, a power output terminal, a couple terminal and a terminate terminal. The power input terminal can receive a radio frequency signal from a power amplifier, and the power output terminal can be electrically connected to a load. The switch has an ON state and an OFF state, and includes an input electrically connected to the terminate terminal and an output electrically connected to the termination impedance. The switch is configured to provide a relatively low impedance path between the input and the output when in the ON state and to provide a relatively high impedance path between the input and the output when in the OFF state. The control block can set the state of the switch. | 12-08-2011 |
20110300898 | HIGH LINEARITY CMOS RF SWITCH PASSING LARGE SIGNAL AND QUIESCENT POWER AMPLIFIER CURRENT - Disclosed are high linearity CMOS-based devices capable of passing large signal and quiescent power amplifier current for switching radio frequency (RF) signals, and methods for biasing such devices. In certain RF devices such as mobile phones, providing different amplification modes can yield performance advantages. For example, a capability to transmit at low and high power modes typically results in an extended battery life, since the high power mode can be activated only when needed. Switching between such amplification modes can be facilitated by one or more switches formed in an integrated circuit and configured to route RF signal to different amplification paths. In certain embodiments, such RF switches can be formed as CMOS devices, and can be based on triple-well structures. In certain embodiments, a bias voltage applied to an isolated well of such a triple-well structure can be substantially tied to a source voltage coupled to source and drain, so as to yield desired performance features such as high amplification linearity even when the source voltage changes. | 12-08-2011 |
20130293316 | METHODS FOR DIRECTIONAL COUPLER TERMINATION IMPEDANCE CONTROL - Methods for directional coupler termination impedance control are provided. In one embodiment, a method for termination impedance selection of a directional coupler in a power amplifier module is provided. The method includes determining at least one of a power mode or a frequency band of operation of the power amplifier module. The method further includes selecting a termination impedance of the directional coupler based on the determination using at least one switch. | 11-07-2013 |