| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 330151000 | WITH AMPLIFIER BYPASS MEANS (E.G., FORWARD FEED) | 10 |
| 20090243721 | FEEDFORWARD AMPLIFIER CIRCUIT AND METHOD FOR CONTROLLING A FEEDFORWARD AMPLIFIER CIRCUIT - A feedforward amplifier circuit includes a controllable error signal subtraction module (CESSM). The CESSM has a module signal input, an error cancellation input, a module control input and a circuit output. The module signal input of the CESSM is coupled to a power amplifier via a coupler and delay circuit. The error cancellation input is coupled to a feedforward subtraction module via an error signal amplifier. The module control input is coupled to the output of a controller. In operation, the CESSM subtracts an error cancellation signal from the module signal input. Upon determining a malfunction of the power amplifier, the controller sends a signal to the module control input resulting in the CESSM isolating the module signal input from the circuit output and directly coupling the error cancellation to the circuit output. | 10-01-2009 |
| 20090256633 | Bypass Device for Microwave Amplifier Unit - The invention relates to a bypass device for a microwave amplifier unit, the microwave amplifier unit ( | 10-15-2009 |
| 20100194475 | AMPLIFYING CIRCUIT WITH BYPASS CIRCUIT, AND ELECTRONIC DEVICE USING THE SAME - An amplifying circuit with a bypassing function includes an input terminal to which a signal is input from an antenna, an amplifier connected to the input terminal, a first inductor connected between the input port and a ground, and a bypass circuit connected between the input terminal and the output port of the amplifier. The bypass circuit includes a first port connected to the input terminal, a second port connected to the output port of the amplifier, a switch, a capacitor, and a second inductor. The switch is connected in series between the first and second ports. The capacitor is connected in series to the switch between the first and second ports. The second inductor is connected in series to the switch and the capacitor between the first and second ports. The amplifying circuit does not reduce power of a signal drastically even when the signal passes through the bypass circuit, as compared to passing through the amplifier, thus maintaining a profile of a propagation property unchanged and provide preferable transmission quality. | 08-05-2010 |
| 20100237938 | HIGH EFFICIENCY LINEAR POWER AMPLIFIERS WITH LOAD COMPENSATION - The present invention addresses the problem to extend the dynamic power range where the amplifier operates linearly for a full input amplitude swing with improved efficiency. According to the present invention, the above presented problem is solved by changing the delivered power to the load by changing the value of the load and still keeping the amplifier in its linear condition. The invention enables the amplifier to maintain high efficiency over a wider power range. | 09-23-2010 |
| 20100244955 | Reconfigurable Distributed Active Transformers - Reconfigurable distributed active transformers are provided. The exemplary embodiments provided allow changing of the effective number and configuration of the primary and secondary windings, where the distributed active transformer structures can be reconfigured dynamically to control the output power levels, allow operation at multiple frequency bands, maintain a high performance across multiple channels, and sustain desired characteristics across process, temperature and other environmental variations. Integration of the distributed active transformer power amplifiers and a low noise amplifier on a semiconductor substrate can also be provided. | 09-30-2010 |
| 20110018631 | SEMICONDUCTOR DEVICE - According to one embodiment, there is a semiconductor device including a first active element, a second active element connected in parallel with the first active element, and a first stabilization circuit connected between a gate of the first active element and a gate of the second active element and configured with a parallel circuit of a gate bypass resistor, a gate bypass capacitor, and a gate bypass inductor, the first stabilization circuit having a resonant frequency equal to an odd mode resonant frequency. | 01-27-2011 |
| 20130002349 | Bypass Power Amplifier For Improving Efficiency At Low Power - Embodiments of a two-stage bypass power amplifier are provided. In general, the two-stage bypass power amplifier is configured to receive a RF signal that is to be transmitted to a remote device and provide gain to the RF signal prior to the RF signal being transmitted to the remote device. The two-stage bypass power amplifier is configured to operate efficiently (in terms of power) at two different gain or output power levels and can be extended to operate efficiently at additional gain or output power levels. | 01-03-2013 |
| 20130214862 | ADJUSTABLE BYPASS CIRCUIT FOR A SUPPLY VOLTAGE FOR AN AMPLIFIER - Techniques for bypassing a supply voltage for an amplifier are disclosed. In an exemplary design, an apparatus includes an amplifier and an adjustable bypass circuit. The amplifier (e.g., a power amplifier) receives a supply voltage from a supply source. The adjustable bypass circuit is coupled to the supply source and provides bypassing for the supply voltage. The adjustable bypass circuit includes an adjustable capacitor or a fixed capacitor coupled to an adjustable resistor. The supply source may be (i) a power supply source providing a fixed supply voltage for the amplifier or (ii) an envelope tracker providing a variable supply voltage for the amplifier. | 08-22-2013 |
| 20140015605 | Active Transducer Probes and Circuits - In an example embodiment, a method for bidirectional signal propagation comprises: a) sensing a voltage level of a first signal at a first port; b) coupling the first port to an output of an amplifier with a solid state switch if the voltage level of the first signal is less than a threshold voltage, whereby a second signal applied to a second port coupled to an input of the amplifier is propagated in a first direction from the second port to the first port; and c) bypassing the amplifier if the voltage level of the first signal is greater than the threshold voltage such that the first signal is propagated in a second direction from the first port to the second port. | 01-16-2014 |
| 20140266433 | Systems and Methods for Optimizing Amplifier Operations - Methods and systems for optimizing amplifier operations are described. The described methods and systems particularly describe a feed-forward control circuit that may also be used as a feed-back control circuit in certain applications. The feed-forward control circuit provides a control signal that may be used to configure an amplifier in a variety of ways. | 09-18-2014 |
