Load-modulated balanced amplifier (lmba) based on variable cross-coupled pair (xcp)
AssigneeChengdu Fluxworks Technology Co., Ltd
InventorsKai YI, Kai KANG, Chenxi ZHAO, Huihua LIU
Life of this patent
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Abstract
A load-modulated balanced amplifier (LMBA) based on a variable cross-coupled pair (XCP) is provided. The LMBA includes an adaptive bias (ADB) circuit, a first balance terminal amplifier module, a second balance terminal amplifier module, a control terminal amplifier module, a first driver amplifier module, a second driver amplifier module, a third driver amplifier module, a variable XCP, a resistor R5, a resistor R6, a 90-degree differential coupler Q1, a 90-degree differential coupler Q2, and a 90-degree differential coupler Q3.
Claims9
A load-modulated balanced amplifier (LMBA) based on a variable cross-coupled pair (XCP), comprising an adaptive bias (ADB) circuit, a first balance terminal amplifier module, a second balance terminal amplifier module, a control terminal amplifier module, a first driver amplifier module, a second driver amplifier module, a third driver amplifier module, a variable XCP, a resistor R5, a resistor R6, a 90-degree differential coupler Q1, a 90-degree differential coupler Q2, and a 90-degree differential coupler Q3, wherein
- an input terminal of the ADB circuit and a third input terminal of the 90-degree differential coupler Q1 each serve as an input terminal of an amplifier;
- one terminal of an isolated terminal of the 90-degree differential coupler Q1 is connected to the other terminal of the isolated terminal of the 90-degree differential coupler Q1 through the resistor R5;
- a pass-through terminal of the 90-degree differential coupler Q1 comprises one terminal connected to a first input terminal of the 90-degree differential coupler Q2, and the other terminal connected to a second input terminal of the 90-degree differential coupler Q2;
- one terminal of an isolated terminal of the 90-degree differential coupler Q2 is connected to the other terminal of the isolated terminal of the 90-degree differential coupler Q2 through the resistor R6;
- a third output terminal of the 90-degree differential coupler Q1 is connected to an input terminal of the third driver amplifier module;
- an output terminal of the third driver amplifier module is connected to an input terminal of the control terminal amplifier module;
- a coupling terminal of the 90-degree differential coupler Q2 comprises one terminal connected to a first input terminal of the first driver amplifier module, and the other terminal connected to a second input terminal of the first driver amplifier module;
- a pass-through terminal of the 90-degree differential coupler Q2 comprises one terminal connected to a first input terminal of the second driver amplifier module, and the other terminal connected to a second input terminal of the second driver amplifier module;
- an output terminal of the first driver amplifier module is connected to an input terminal of the first balance terminal amplifier module;
- an output terminal of the second driver amplifier module is connected to an input terminal of the second balance terminal amplifier module;
- a first output terminal and a second output terminal of the first balance terminal amplifier module are respectively connected to one terminal of a pass-through terminal of the 90-degree differential coupler Q3 and the other terminal of the pass-through terminal of the 90-degree differential coupler Q3;
- the second balance terminal amplifier module comprises a first output terminal connected to one terminal of a coupling terminal of the 90-degree differential coupler Q3, and a second output terminal connected to the other terminal of the coupling terminal of the 90-degree differential coupler Q3;
- an output terminal of the control terminal amplifier module is connected to an isolated terminal of the 90-degree differential coupler Q3;
- and an output terminal of the 90-degree differential coupler Q3 serves as an output terminal of the millimeter-wave LMBA based on the variable XCP.
Dependencies are inferred from the claim text.