发明名称 |
RF POWER AMPLIFIER WITH TOTAL RADIATED POWER STABILIZATION |
摘要 |
A radio frequency (RF) amplification circuit and a closed-loop amplitude linearization circuit are disclosed. The RF amplification circuit amplifies an RF signal to generate an amplified RF signal. The RF amplification circuit and the closed-loop amplitude linearization circuit form a fast control loop and a slow control loop. The slow control loop estimates a total radiated power (TRP) from the RF amplification circuit to create a TRP estimate using a representation of the amplified RF signal, and controls a fast loop gain of the fast control loop based on the TRP estimate. The fast control loop applies a gain adjustment to the RF amplification circuit based on the fast loop gain and a difference between a target reference amplitude and a measured feedback amplitude. The gain adjustment controls amplitude distortion in the RF amplification circuit. The fast loop gain controls TRP-drift in the RF amplification circuit. |
申请公布号 |
US2014266452(A1) |
申请公布日期 |
2014.09.18 |
申请号 |
US201414218953 |
申请日期 |
2014.03.18 |
申请人 |
RF Micro Devices (Cayman Islands), Ltd. |
发明人 |
Scott Baker;Leipold Dirk Robert Walter;Maxim George |
分类号 |
H03F3/195;H03F3/21 |
主分类号 |
H03F3/195 |
代理机构 |
|
代理人 |
|
主权项 |
1. Circuitry comprising:
an RF amplification circuit configured to amplify an RF signal to generate an amplified RF signal; and a closed-loop gain linearization circuit, such that the RF amplification circuit and the closed-loop gain linearization circuit form a fast control loop and a slow control loop, wherein:
the slow control loop is configured to:
estimate a total radiated power (TRP) from the RF amplification circuit to create a TRP estimate using a representation of the amplified RF signal; andcontrol a fast loop gain of the fast control loop based on the TRP estimate; andthe fast control loop is configured to apply a gain adjustment to the RF amplification circuit based on the fast loop gain and a difference between a target reference amplitude and a measured feedback amplitude, wherein the gain adjustment controls amplitude distortion in the RF amplification circuit and the fast loop gain controls TRP-drift in the RF amplification circuit. |
地址 |
George Town KY |