SWITCHABLE SUPPLY AND TUNABLE LOAD IMPEDANCE POWER AMPLIFIER
First Claim
1. A transceiver configured to transmit data in a plurality of operating modes including a Wi-Fi mode and two or more different Bluetooth power modes, the transceiver comprising:
- a first amplifier configured to amplify Bluetooth signals;
a second amplifier configured to amplify Wi-Fi signals;
an antenna coupled to the second amplifier; and
a tunable load circuit, coupled between the first amplifier and the second amplifier, configured to provide a different load impedance for each of the plurality of operating modes, the tunable load circuit including;
two impedance paths coupled in parallel between output terminals of the first and second amplifiers, the two impedance paths comprising (i) a first impedance path including a first capacitor, one or more first transistors, and a second capacitor coupled in series between the output terminals of the first and second amplifiers, and (ii) a second impedance path including a third capacitor and a fourth capacitor coupled in series between the output terminals of the first and second amplifiers; and
a number of shunt paths coupled between the tunable load circuit and ground potential, the number of shunt paths comprising (i) a first shunt path including a second transistor coupled between ground potential and a common node of the third and fourth capacitors, and (ii) a second shunt path including a third transistor and a fifth capacitor coupled in series between ground potential and the common node.
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Accused Products
Abstract
A transceiver configured to transmit data in a plurality of operating modes including a Wi-Fi mode and two or more different Bluetooth power modes, the transceiver comprising: a first power amplifier configured to amplify Bluetooth signals; a second power amplifier configured to amplify Wi-Fi signals; an antenna coupled to the second power amplifier; and a tunable load circuit, coupled between the first amplifier and the second amplifier, configured to provide a different load impedance for each of the plurality of operating modes, the tunable load circuit consisting of: two impedance paths coupled in parallel between output terminals of the first and second amplifiers; and a number of shunt paths coupled between the tunable load circuit and ground potential.
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Citations
30 Claims
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1. A transceiver configured to transmit data in a plurality of operating modes including a Wi-Fi mode and two or more different Bluetooth power modes, the transceiver comprising:
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a first amplifier configured to amplify Bluetooth signals; a second amplifier configured to amplify Wi-Fi signals; an antenna coupled to the second amplifier; and a tunable load circuit, coupled between the first amplifier and the second amplifier, configured to provide a different load impedance for each of the plurality of operating modes, the tunable load circuit including; two impedance paths coupled in parallel between output terminals of the first and second amplifiers, the two impedance paths comprising (i) a first impedance path including a first capacitor, one or more first transistors, and a second capacitor coupled in series between the output terminals of the first and second amplifiers, and (ii) a second impedance path including a third capacitor and a fourth capacitor coupled in series between the output terminals of the first and second amplifiers; and a number of shunt paths coupled between the tunable load circuit and ground potential, the number of shunt paths comprising (i) a first shunt path including a second transistor coupled between ground potential and a common node of the third and fourth capacitors, and (ii) a second shunt path including a third transistor and a fifth capacitor coupled in series between ground potential and the common node. - View Dependent Claims (2, 3, 4, 5, 8, 9, 10)
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6. (canceled)
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7. (canceled)
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11. A method for operating a transceiver to transmit data in a plurality of operating modes including a Wi-Fi mode and two or more different Bluetooth power modes, the method comprising:
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amplifying Bluetooth signals for wireless transmission, using a first amplifier, during the two or more different Bluetooth power modes; amplifying Wi-Fi signals for wireless transmission, using a second amplifier, during the Wi-Fi mode; and providing a different load impedance for each of the plurality of operating modes using a tunable load circuit including first and second parallel impedance paths and a number of shunt paths coupled to ground potential, wherein; the first and second parallel impedance paths comprise (i) a first impedance path including a first capacitor, one or more first transistors, and a second capacitor coupled in series between output terminals of the first and second amplifiers, and (ii) a second impedance path including a third capacitor and a fourth capacitor coupled in series between the output terminals of the first and second amplifiers; and the number of shunt paths comprise (i) a first shunt path including a second transistor coupled between ground potential and a common node of the third and fourth capacitors, and (ii) a second shunt path including a third transistor and a fifth capacitor coupled in series between ground potential and the common node. - View Dependent Claims (12, 13, 14, 15, 18)
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16. (canceled)
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17. (canceled)
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19. A transceiver configured to transmit data in a plurality of operating modes including a Wi-Fi mode and two or more different Bluetooth power modes, the transceiver comprising:
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means for amplifying Bluetooth signals, using a first amplifier, for wireless transmission during the two or more different Bluetooth power modes; means for amplifying Wi-Fi signals, using a second amplifier, for wireless transmission during the Wi-Fi mode; and means for providing a different load impedance for each of the plurality of operating modes using a tunable load circuit including first and second parallel impedance paths and a number of shunt paths coupled to ground potential, wherein; the first and second parallel impedance paths comprise (i) a first impedance path including a first capacitor, one or more first transistors, and a second capacitor coupled in series between output terminals of the first and second amplifiers, and (ii) a second impedance path including a third capacitor and a fourth capacitor coupled in series between the output terminals of the first and second amplifiers; and the number of shunt paths comprise (i) a first shunt path including a second transistor coupled between ground potential and a common node of the third and fourth capacitors, and (ii) a second shunt path including a third transistor and a fifth capacitor coupled in series between ground potential and the common node. - View Dependent Claims (20, 21, 22, 23, 24)
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25. A transceiver configured to transmit data in a plurality of operating modes, the transceiver comprising:
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a first amplifier configured to amplify first data signals; a second amplifier configured to amplify second data signals; an antenna coupled to the second amplifier; and a tunable load circuit, coupled between output terminals of the first and second amplifiers, configured to provide a different load impedance for each of the plurality of operating modes, the tunable load circuit comprising; a first impedance path including a first capacitor, one or more first transistors, and a second capacitor coupled in series between the output terminals of the first and second amplifiers; a second impedance path including a third capacitor and a fourth capacitor coupled in series between the output terminals of the first and second amplifiers; a first shunt path including a second transistor coupled between ground potential and a common node of the third and fourth capacitors; and a second shunt path including a third transistor and a fifth capacitor coupled in series between ground potential and the common node. - View Dependent Claims (26, 27, 28, 29, 30)
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Specification