| 摘要 |
A method and apparatus for maintaining component temperature in a base station is disclosed. The method and apparatus reduces or eliminates the time required for raising the internal temperature of components in a base station transceiver without incurring substantial cost. A power amplifier receives a signal at an input and provides an amplified signal at an output and a switch for switching between a first and a second bias circuit in response to a control signal, wherein the first bias circuit comprises an RF bias circuit for providing normal RF bias to the power amplifier and the second bias circuit is a cold start bias circuit for providing a cold start bias to the power amplifier. The power amplifier includes a power transistor. The cold start bias circuit causes the power transmitter to substantially increase an amount of heat dissipated by the power amplifier causing the temperature of the BTS to rise above de-ratings for the components. The temperature monitor also compares a measured temperature to a minimum and a maximum reference temperature. The temperature monitor provides a signal for engaging the switch causing the cold start bias circuit to be selected by the switch when the measured temperature is less than the minimum reference temperature and a signal for disengaging the switch causing the RF bias circuit to be selected by the switch when the measured temperature is greater than the minimum reference temperature. |
