LTE-ADVANCED (4G) FRONT END RADIO ARCHITECTURE
First Claim
1. A front end radio architecture (FERA) comprising:
- a transmitter block having a first output terminal and a second output terminal;
a power amplifier (PA) having a first input terminal coupled to the first output terminal of the transmitter block, a second input terminal coupled to the second output terminal of the transmitter block, a first output terminal, and a second output terminal, the PA comprising;
a PA die having a first half amplifier cell including an output amplifier stage, wherein the first half amplifier cell is coupled to the first input terminal, and a second half amplifier cell including an output amplifier stage, wherein the second half amplifier cell is coupled to the second input terminal; and
a first PA transformer and a second PA transformer each having a first winding, a second winding, and a third winding, wherein the first winding of the first PA transformer is coupled to the output amplifier stage of the first half amplifier cell, and the first winding of the second PA transformer is coupled to the output amplifier stage of the second half amplifier cell, and wherein the second winding of the first PA transformer is coupled in series with the second winding of the second PA transformer, the second winding of the first PA transformer having an end that makes up the first output terminal, and the second winding of the second PA transformer having an end that is coupled to a fixed voltage node, and wherein the third winding of the first PA transformer is coupled in series with the third winding of the second PA transformer, the third winding of the first PA transformer having an end coupled to the fixed voltage node, and the third winding of the second PA transformer having an end making up the second output terminal;
a first duplexer coupled to the first output terminal of the PA; and
a second duplexer coupled to the second output terminal of the PA.
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Accused Products
Abstract
A front end radio architecture (FERA) is disclosed that includes a power amplifier (PA). The PA includes first and second input terminals and first and second output terminals and a PA die having first and second half amplifier cells, each of which includes an output amplifier stage. The first and second half amplifier cells are coupled to the first and second input terminals. First and second PA transformers each include first, second, and third windings. The first windings are coupled to the output amplifier stages. The second winding of the first PA transformer is coupled to the first output terminal of the PA and also coupled in series with the second winding of the second PA transformer. The third winding of the first PA transformer is coupled in series with the third winding of the second PA transformer, with one end of the second PA transformer being coupled to the second output terminal of the PA.
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Citations
40 Claims
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1. A front end radio architecture (FERA) comprising:
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a transmitter block having a first output terminal and a second output terminal; a power amplifier (PA) having a first input terminal coupled to the first output terminal of the transmitter block, a second input terminal coupled to the second output terminal of the transmitter block, a first output terminal, and a second output terminal, the PA comprising; a PA die having a first half amplifier cell including an output amplifier stage, wherein the first half amplifier cell is coupled to the first input terminal, and a second half amplifier cell including an output amplifier stage, wherein the second half amplifier cell is coupled to the second input terminal; and a first PA transformer and a second PA transformer each having a first winding, a second winding, and a third winding, wherein the first winding of the first PA transformer is coupled to the output amplifier stage of the first half amplifier cell, and the first winding of the second PA transformer is coupled to the output amplifier stage of the second half amplifier cell, and wherein the second winding of the first PA transformer is coupled in series with the second winding of the second PA transformer, the second winding of the first PA transformer having an end that makes up the first output terminal, and the second winding of the second PA transformer having an end that is coupled to a fixed voltage node, and wherein the third winding of the first PA transformer is coupled in series with the third winding of the second PA transformer, the third winding of the first PA transformer having an end coupled to the fixed voltage node, and the third winding of the second PA transformer having an end making up the second output terminal; a first duplexer coupled to the first output terminal of the PA; and a second duplexer coupled to the second output terminal of the PA. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A mobile terminal comprising:
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a first antenna; a second antenna; a control system; a front end radio architecture (FERA) comprising; a transmitter block having a first output terminal and a second output terminal; a power amplifier (PA) having a first input terminal coupled to the first output terminal of the transmitter block, a second input terminal coupled to the second output terminal of the transmitter block, a first output terminal, and a second output terminal, the PA comprising; a PA die having a first half amplifier cell having a multiplexer switch including a pair of differential terminals adapted to crisscross in response to a first control signal provided by the control system, and an output amplifier stage, wherein the first half amplifier cell is coupled to the first input terminal, and a second half amplifier cell having a multiplexer switch including a pair of differential terminals adapted to crisscross in response to a second control signal provided by the control system, and an output amplifier stage, wherein the second half amplifier cell is coupled to the second input terminal; and a first PA transformer and a second PA transformer each having a first winding, a second winding, and a third winding, wherein the first winding of the first PA transformer is coupled to the output amplifier stage of the first half amplifier cell, and the first winding of the second PA transformer is coupled to the output amplifier stage of the second half amplifier cell, and wherein the second winding of the first PA transformer is coupled in series with the second winding of the second PA transformer, the second winding of the first PA transformer having an end that makes up the first output terminal, and the second winding of the second PA transformer having an end that is coupled to a fixed voltage node, and wherein the third winding of the first PA transformer is coupled in series with the third winding of the second PA transformer, the third winding of the first PA transformer having an end coupled to the fixed voltage node, and the third winding of the second PA transformer having an end that makes up the second output terminal; a first duplexer coupled between the first output terminal of the PA and the first antenna; and a second duplexer coupled between the second output terminal of the PA and the second antenna. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24)
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25. A power amplifier (PA) comprising:
a PA die comprising; a first input terminal; a second input terminal; a first half amplifier cell having a multiplexer switch including a pair of differential terminals adapted to crisscross in response to a first control signal, and an output amplifier stage, wherein the multiplexer switch is communicatively coupled to the first input terminal; a second half amplifier cell having a multiplexer switch including a pair of differential terminals adapted to crisscross in response to a second control signal, and an output amplifier stage, wherein the multiplexer switch is communicatively coupled to the second input terminal; a first PA transformer having a first winding, a second winding, and a third winding, wherein the first winding is coupled to the output amplifier stage of the first half amplifier cell; a second PA transformer having a first winding, a second winding, and a third winding, wherein the first winding is coupled to the output amplifier stage of the second half amplifier cell; a first output terminal coupled to the second winding of the first PA transformer which is coupled in series with the second winding of the second PA transformer, wherein the second winding of the second PA includes an end coupled to a fixed voltage node; and a second output terminal coupled to the third winding of the second PA transformer which is coupled in series with the second winding of the first PA transformer, wherein the second winding of the first PA transformer includes an end coupled to the fixed voltage node. - View Dependent Claims (26)
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27. A front end radio architecture (FERA) comprising:
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a power amplifier (PA) having a first input terminal, a second input terminal, and a PA die having a first half amplifier cell with an output stage and a second half amplifier cell with an output stage, wherein the first half amplifier cell is communicably coupled to the first input terminal and the second half amplifier cell is communicably coupled to the second input terminal; a first PA transformer having a first winding, a second winding, and a third winding, wherein the first winding is coupled to the output amplifier stage of the first half amplifier cell; a second PA transformer having a first winding, a second winding, and a third winding, wherein the first winding is coupled to the output amplifier stage of the second half amplifier cell; a first output terminal coupled to the second winding of the first PA transformer which is coupled in series with the second winding of the second PA transformer, wherein the second winding of the second PA includes an end coupled to a fixed voltage node; and a second output terminal coupled to the third winding of the second PA transformer which is coupled in series with the second winding of the first PA transformer, wherein the second winding of the first PA transformer includes an end coupled to the fixed voltage node. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38, 39, 40)
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Specification