INTEGRATED CIRCUIT, WIRELESS COMMUNICATION UNIT AND METHOD FOR PROVIDING A POWER SUPPLY
First Claim
1. An integrated circuit for providing a power supply to a radio frequency (RF) power amplifier (PA), the integrated circuit comprising:
- a low-frequency power supply path comprising a switching regulator; and
a high-frequency power supply path arranged to regulate an output voltage of a combined power supply at an output port of the integrated circuit for coupling to a load wherein the combined power supply is provided by the low-frequency power supply path and high-frequency power supply path;
wherein the high-frequency power supply path comprises;
an amplifier comprising a voltage feedback and arranged to drive a power supply signal on the high-frequency power supply path; and
a capacitor operably coupled to the output of the amplifier and arranged to perform dc voltage level shifting of the power supply signal.
1 Assignment
0 Petitions
Accused Products
Abstract
An integrated circuit is described for providing a power supply to a radio frequency (RF) power amplifier (PA). The integrated circuit includes a low-frequency power supply path including a switching regulator and a high-frequency power supply path arranged to regulate an output voltage of a combined power supply at an output port of the integrated circuit for coupling to a load. The combined power supply is provided by the low-frequency power supply path and high-frequency power supply path. The high-frequency power supply path includes: an amplifier including a voltage feedback and arranged to drive a power supply signal on the high-frequency power supply path; and a capacitor operably coupled to the output of the amplifier and arranged to perform dc level shifting of the power supply signal.
-
Citations
21 Claims
-
1. An integrated circuit for providing a power supply to a radio frequency (RF) power amplifier (PA), the integrated circuit comprising:
-
a low-frequency power supply path comprising a switching regulator; and a high-frequency power supply path arranged to regulate an output voltage of a combined power supply at an output port of the integrated circuit for coupling to a load wherein the combined power supply is provided by the low-frequency power supply path and high-frequency power supply path; wherein the high-frequency power supply path comprises; an amplifier comprising a voltage feedback and arranged to drive a power supply signal on the high-frequency power supply path; and a capacitor operably coupled to the output of the amplifier and arranged to perform dc voltage level shifting of the power supply signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
-
-
20. A wireless communication unit comprising a radio frequency (RF) power amplifier (PA) and a power supply for providing a power supply to the RF PA, the wireless communication unit comprising:
-
a low-frequency power supply path comprising a switching regulator; and a high-frequency power supply path arranged to regulate an output voltage of a combined power supply at an output port of the integrated circuit for coupling to a load wherein the combined power supply is provided by the low-frequency power supply path and high-frequency power supply path; wherein the high-frequency power supply path comprises; an amplifier comprising a voltage feedback and arranged to drive a power supply signal on the high-frequency power supply path; and a capacitor operably coupled to the output of the amplifier and arranged to perform dc voltage level shifting of the power supply signal.
-
-
21. A method for providing a power supply to a radio frequency (RF) power amplifier (PA), the method comprising:
-
providing a low-frequency power supply to a RF PA using a switching regulator; providing a high-frequency power supply to the RF PA via a high-frequency power supply path; driving a power supply for the RF PA from an amplifier that uses voltage-feedback on the high-frequency power supply path; and performing dc voltage level shifting of the power supply signal on the high-frequency power supply path.
-
Specification