# US 2019/0296777 A1 · Multi-Mode Multi-Band Self-Realigning Power Amplifier

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- Number: US 2019/0296777 A1
- Document ID: US20190296777A1
- Status: Published application
- Kind: A1
- Application number: 16/436,397
- Filed: 2019-06-10
- Published: 2019-09-26
- Earliest claimed: 2011-07-24
- Assignees: Ethertronics, Inc.
- Applicants: Ethertronics, Inc.
- Inventors: Laurent Desclos; Alexandre Dupuy
- Web page: https://patentgrep.com/patent/US20190296777A1

## CPC

- H04B 1/006: {using switches for selecting the desired band (H04B1/0057 takes precedence)}
- H03F 1/0277: {Selecting one or more amplifiers from a plurality of amplifiers}
- H03F 1/565: {using inductive elements}
- H03F 3/211: {using a combination of several amplifiers (H03F3/60 takes precedence)}
- H03F 3/245: {with semiconductor devices only}
- H03F 3/602: {Combinations of several amplifiers}
- H03F 3/68: Combinations of amplifiers, e.g. multi-channel amplifiers for stereophonics {(power amplifiers using a combination of several semiconductor amplifiers H03F3/211; combinations of amplifiers using coupling networks with distributed constants H03F3/602)}
- H04W 88/06: adapted for operation in multiple networks {or having at least two operational modes}, e.g. multi-mode terminals
- H03F 2200/111: the amplifier being a dual or triple band amplifier, e.g. 900 and 1800 MHz, e.g. switched or not switched, simultaneously or not
- H03F 2200/318: A matching circuit being used as coupling element between two amplifying stages
- H03F 2200/378: A variable capacitor being added in the output circuit, e.g. collector, drain, of an amplifier stage
- H03F 2200/408: the output amplifying stage of an amplifier comprising three power stages
- H03F 2200/423: Amplifier output adaptation especially for transmission line coupling purposes, e.g. impedance adaptation
- H03F 2200/543: A transmission line being used as coupling element between two amplifying stages
- H04B: TRANSMISSION
- H03F: AMPLIFIERS
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

A power amplifier (PA) system is provided for multi-mode multi-band operations. The PA system includes one or more amplifying modules, each amplifying module including one or more banks, each bank comprising one or more transistors; and a plurality of matching modules, each matching module being configured to be adjusted to provide impedances corresponding to frequency bands and conditions. A controller dynamically controls an input terminal of each bank and adjusts the matching modules to provide a signal path to meet specifications on properties associated with signals during each time interval.

## Claims

### Claim at position 1

1-20. (canceled)

### Claim 21

A communication system configured to operate for a plurality of modes and a plurality of frequency bands, comprising:
an antenna configured to receive (Rx) signals or transmit out transmit (Tx) signals in a mode selected from the plurality of modes and in a frequency band selected from the plurality of frequency bands during a time interval;
a switch coupled to the antenna;
an input port for inputting the Tx signals;
an output port for outputting the Rx signals;
a Tx section coupled to the input port and the switch, the Tx section being configured to receive the Tx signals from the input port, process the Tx signals and send the Tx signals to the switch, the Tx section comprising a power amplifier (PA) system that is configured to amplify the Tx signals;
an Rx section coupled to the output port and the switch, the Rx section being configured to receive the Rx signals from the switch, process the Rx signals and send the Rx signals to the output port; and
a controller coupled to the Tx section and the antenna through a bidirectional control line, the controller being configured to receive information on the Tx signals and to control the Tx section to process the Tx signals corresponding to the frequency band, and the mode during the time interval, wherein the controller configured to controls the Tx section variably with time as the information varies during each time interval.

### Claim 22 (depends on 21)

The communication system of claim 21, wherein the antenna is a tunable antenna that is configured to be controlled by the controller to adjust one or more properties associated with the Tx signals.

### Claim 23 (depends on 21)

The communication system of claim 21, wherein the controller is coupled to the PA system, the antenna, a filter system, a transceiver, a CPU, an application CPU, and a baseband.

### Claim 24 (depends on 23)

The communication system of claim 23, wherein the controller resides in the CPU, the application CPU or the baseband.

### Claim 25 (depends on 21)

The communication system of claim 21, wherein the PA system comprises:
one or more amplifying modules, each amplifying module comprising one or more banks, each bank comprising one or more transistors, wherein each bank is configured to have an input terminal and amplify power of signals to a predetermined level;
a plurality of matching modules, each matching module being configured to be adjusted to provide an impedance corresponding to the frequency band and the conditions, wherein
based on the information the controller is configured to control the input terminal of each bank to select one bank from each amplifying module in a predetermined series to turn on the selected banks in the series and to adjust the plurality of matching modules, and wherein
the controller is configured to control the input terminal of each bank and to adjust the matching modules variably with time as the information varies to provide a signal path that has the selected banks and the adjusted matching modules during each time interval.

### Claim 26 (depends on 21)

The communication system of claim 21, wherein the information includes selection of the mode and the frequency band during the time interval, and based on the information the controller is configured to control the Tx section in the mode and in the frequency band during the time interval.

### Claim 27 (depends on 21)

The communication system of claim 21, wherein the information includes a change in distance to a base station, and based on the information the controller is configured to control the Tx section to have less output power than nominal output power when the distance is shorter than a nominal distance and more output power than the nominal output power when the distance is longer than the nominal distance.

### Claim 28 (depends on 21)

The communication system of claim 21, wherein the information includes changes in the conditions caused by a head, a hand, a metal object or other interference-causing objects placed in proximity of the antenna.

### Claim 29 (depends on 21)

The communication system of claim 21, wherein the information includes changes in the conditions causing a shift in frequency, and based on the information the controller is configured to control the Tx section to provide the frequency band during the time interval.

### Claim 30 (depends on 21)

The communication system of claim 21, wherein the information includes changes in the conditions causing a shift in impedance for the Tx signals, and based on the information the controller is configured to control the Tx section to provide an impedance corresponding to the frequency band and the conditions during the time interval.

### Claim at position 12

31-45. (canceled)