High frequency gain amplifier with phase compensation circuit

Details High frequency gain amplifier with phase compensation circuit High frequency gain amplifier with phase compensation circuit

2006-10-17

2006-10-17

Wells, Kenneth B. (Department: 2816)

Miscellaneous active electrical nonlinear devices, circuits, and

Signal converting, shaping, or generating

Phase shift by less than period of input

C455S205000

Reexamination Certificate

active

07123070

ABSTRACT:
A gain amplifier with quadrature phase compensation circuit is disclosed. The gain amplifier for in-phase (“I”) and quadrature (“Q”) signals comprises a first resistive component having a first input node (“Node1”) and a first output node (“Node5”), with the Node1coupled to the I+ differential signal, a second resistive component having a second input node (“Node3”) and a second output node (“Node7”), with the Node3coupled to the Q+ signal, a third resistive component having a third input node (“Node2”) and a third output node (“Node6”), with the Node2coupled to the I− signal, a fourth resistive component having a fourth input node (“Node4”) and a fourth output node (“Node8”), with the Node4coupled to said Q− differential signal, a first reactive component connecting between the Node1and the Node7, a second reactive component connecting between the Node3and the Node6, a third reactive component connecting between the Node2and the Node8, a fourth reactive component connecting between the Node4and the Node5. Then phase-shifted I+ is generated at the Node5, a phase-shifted Q+ is generated at the Node7, a phase-shifted I− is generated at the Node6and a phase-shifted Q− is generated at the Node8.

REFERENCES:
patent: 5379457 (1995-01-01), Nguyen
patent: 6026286 (2000-02-01), Long

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