Patent application number | Description | Published |
20080231366 | Method and System for a Low Noise Amplifier with Tolerance to Large Inputs - Methods and systems for a low noise amplifier with tolerance to large inputs are disclosed. Aspects of one method may include providing an individual current source for each input transistor to a low noise amplifier (LNA), wherein the individual current sources may be isolated from each other when the LNA is turned off. The individual current sources may also form a common current source for the input transistors when the LNA is turned on. Accordingly, the input transistors to the LNA may float when the LNA is turned off, thereby coupling the input signal voltage to the source and drain terminals. The individual current sources may be isolated from each other by a coupling transistor that is turned off. When the LNA is turned on, the coupling transistor may be turned on to couple the individual current sources to each other to form the common current source for the input transistors. | 09-25-2008 |
20090273411 | METHOD AND SYSTEM FOR FLIP CHIP CONFIGURABLE RF FRONT END WITH AN OFF-CHIP BALUN - Methods and systems for a flip chip configurable RF front end with an off-chip balun may include bonding a balun package to a single integrated circuit (IC) comprising an integrated transmitter and a receiver. The balun package may comprise one or more layers and may be electrically coupled to the IC. The balun package may comprise various devices such as, for example, inductors, capacitors, resistors, and/or switches, which may be on an exterior surface and/or inner layers of the balun package. Accordingly, the balun package and/or the IC may be configured for receiving RF signals and/or transmitting RF signals. The balun package and/or the IC may also be configured for single-ended RF input, single-ended RF output, differential RF input, and/or differential RF output. An off-chip amplifier may be used to amplify signals on the single transmit line in the single-ended RF output mode of operation. | 11-05-2009 |
20090275295 | METHOD AND SYSTEM FOR FLIP-CHIP RF FRONT END WITH A SWITCHABLE POWER AMPLIFIER - Methods and systems for a flip-chip RF front end with switchable power amplifier. Aspects of one method may include controlling at least one MEMS switch to allow an on-chip PA and/or an off-chip PA to amplify RF signals for transmission. The MEMS switch may be part of a device package that may be mounted above the flip-chip bonded integrated circuit (IC). Accordingly, various embodiments of the invention may enable controlling of switches to amplify the RF signals via the on-chip RF PA, and the off-chip PA may be bypassed if there is an off-chip RF PA. Various embodiments of the invention may enable controlling the switches to amplify the RF signals via an off-chip RF PA and bypassing an on-chip RF PA. Various embodiments of the invention may also enable controlling the switches to amplify the RF signals via an off-chip RF PA and an on-chip RF PA. | 11-05-2009 |
20100080325 | Method and System for Independent I and Q Loop Amplitude Control for Quadrature Generators - Certain aspects of a method and system for independent in-phase (I) and quadrature (Q) loop amplitude control for quadrature generators may include determining an amplitude voltage associated with an in-phase (I) component and a quadrature (Q) component of a generated signal. A DC reference voltage associated with the I component and the Q component may be determined. The determined amplitude voltage may be compared with the determined reference voltage to generate a control signal. The amplitude mismatch between the I component and the Q component may be compensated by controlling a biasing current of one or more programmable buffers associated with one or both of the I component and the Q component, based on the generated control signal. | 04-01-2010 |
20110051868 | VARIOUS IMPEDANCE FM RECEIVER - A receiver within a wireless device is able to couple to different antennas with different impedances. The wireless device includes a first antenna pin for coupling to a first antenna with a first impedance, a second antenna pin for coupling to a second antenna with a second impedance and a switch for selecting at least one of the first antenna and the second antenna to couple to the receiver. | 03-03-2011 |
20110103526 | Method and System for Mitigating the Effects of Pulling in Multiple Phase Locked Loops in Multi-Standard Systems - Certain aspects of a method and system for mitigating effects of pulling in multiple phase locked loops in multi-standard systems may include selecting an input frequency range of operation at a voltage controlled oscillator based on a particular wireless band of operation in a system that handles a first wireless communication protocol and a second wireless communication protocol. An image rejection mixer may be enabled to generate an output signal for the particular wireless band of operation based on mixing a plurality of received signals within a selected frequency range. An in-phase (I) component and a quadrature (Q) component of the generated output signal may be generated by utilizing a RC-CR quadrature network. | 05-05-2011 |
20110215880 | Method and System for Flip Chip Configurable RF Front End With an Off-Chip Balun - Methods and systems for a flip chip configurable RF front end with an off-chip balun may include bonding a balun package to a single integrated circuit (IC) comprising an integrated transmitter and a receiver. The balun package may comprise one or more layers and may be electrically coupled to the IC. The balun package may comprise various devices such as, for example, inductors, capacitors, resistors, and/or switches, which may be on an exterior surface and/or inner layers of the balun package. Accordingly, the balun package and/or the IC may be configured for receiving RF signals and/or transmitting RF signals. The balun package and/or the IC may also be configured for single-ended RF input, single-ended RF output, differential RF input, and/or differential RF output. An off-chip amplifier may be used to amplify signals on the single transmit line in the single-ended RF output mode of operation. | 09-08-2011 |
20120231752 | Method and System for a Configurable Front End - Methods and systems for a configurable front end are disclosed. Aspects of one method may include a transceiver on a single chip that may comprise a power amplifier (PA) and a low noise amplifier (LNA). The PA may amplify signals to be transmitted over a range of output transmit power. An upper limit for a power range may of substantially 12 dBm. The LNA may be tolerant to PA signals by, for example, being configured to follow signal voltages generated from an output of the power amplifier. For example, each input transistor of the LNA may be isolated from other transistors in the LNA. Accordingly, the input transistors may float since they may not be tied to a voltage level via other transistors. This may allow the input transistors to avoid damage. The transceiver may also be configured for differential RF input, differential RF output, single-ended RF input, and/or single-ended RF output. In some configurations, the transceiver may also support use of a power amplifier external to the transceiver to amplify RF signals communicated by the transceiver. | 09-13-2012 |
20120302181 | RADIO FRONT END AND APPLICATIONS THEREOF - A radio front end includes a transformer and an adjustable load. The transformer includes a first winding and a second winding, wherein the first winding is operably coupled to an antenna and the second winding coupled to at least one of a power amplifier and a low noise amplifier. The adjustable load is operably coupled to the second winding, wherein the adjustable load provides a first impedance based on a first impedance selection signal when the radio front end is in a transmit mode and provides a second impedance based on a second impedance selection signal when the radio front end is in a receive module such that impedance at the first winding is substantially similar in the transmit mode and in the receive mode. | 11-29-2012 |