US 12,113,496 B2Granted

Power amplifier with large output power

AssigneeTelefonaktiebolaget LM Ericsson (publ)

InventorMingquan Bao

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Abstract

A power amplifier has a number n of power cells Ai, a number n of output transmission lines TL1i for combining output powers from the power cells, and a number n of impedance transformation network ITNi, where i=1, . . . n. The number n of output transmission lines are connected in series. The output terminal of each power cells is connected to its output transmission line via its impedance transformation network. Each impedance transformation network is an upward impedance transformation network for transforming an output impedance of each power cell at the input terminal of the impedance transformation network into a higher impedance at the output terminal of the impedance transformation network. A number n of input transmission lines TL0i (i=1, 2 . . . n)=connected in series. The input terminal of the i-th power cell is connected to the second terminal of the i-th transmission line via a capacitor, where i=1, . . . n.

Claims20

Dependent claims

A power amplifier comprising:

a number n of power cells Ai, where i=1, . . . n, each power cell has an input terminal and an output terminal;
a number n of output transmission lines TL1i for combining output powers from the power cells, where i=1, . . . n, each output transmission line having a first terminal and a second terminal, the second terminal of the i-th transmission line is connected to the first terminal of the (i+1)-th transmission line such that the number n of output transmission lines are connected in series;
and
a number n of impedance transformation network ITNi, where i=1, . . . n, each impedance transformation network has an input terminal and output terminal;
the output terminal of i-th power cell is connected to the input terminal of the i-th impedance transformation network and the output terminal of the i-th impedance transformation network is connected to the first terminal of the i-th output transmission line;
and
each impedance transformation network is an upward impedance transformation network for transforming an output impedance of each power cell at the input terminal of the impedance transformation network into a higher impedance at the output terminal of the impedance transformation network.

4 more elements

An electronic device comprising a power amplifier, the power amplifier comprising:

a number n of power cells Ai, where i=1, . . . n, each power cell has an input terminal and an output terminal;
a number n of output transmission lines TL1i for combining output powers from the power cells, where i=1 . . . n, each output transmission line having a first terminal and a second terminal, the second terminal of the i-th transmission line is connected to the first terminal of the (i+1)-th transmission line such that the number n of output transmission lines are connected in series;
and
a number n of impedance transformation network ITNi, where i=1 . . . n, each impedance transformation network has an input terminal and output terminal;
the output terminal of i-th power cell is connected to the input terminal of the i-th impedance transformation network and the output terminal of the i-th impedance transformation network is connected to the first terminal of the i-th output transmission line;
and
each impedance transformation network is an upward impedance transformation network for transforming an output impedance of each power cell at the input terminal of the impedance transformation network into a higher impedance at the output terminal of the impedance transformation network.

4 more elements

Dependencies are inferred from the claim text.

Facts

Application: 17/621,781Filed 24 Jun 2019
Published: US 2022/0368298 A117 Nov 2022
Granted: 8 Oct 2024
Term ends: Not estimatedThe source records don’t support an estimate.

Classification10 codes

H03F 3/607
Distributed amplifiers: using FET's
H03F 1/18
Modifications of amplifiers to reduce detrimental influences of internal impedances of amplifying elements: by use of distributed coupling , i.e.…
H03F 1/565
Modifications of input or output impedances, not otherwise provided for: using inductive elements
H03F 3/245
Of transmitter output stages: with semiconductor devices only

Family

US 2022/0368298 A1Pre-grant publication · published 17 Nov 2022
US 12,113,496 B2This patent

From the US filing history. Foreign family members aren’t listed.

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