| 摘要 |
The invention relates to a method to control the power of millimeter waves for a V-band TR module. According to said method, the output power is detected and controlled at a constant level with an electronic control circuit by means of a variable attenuator. The invention proposes that in transmit mode, for operation at a frequency in the 60 GHz range and higher, a first SPDT (single pole double throw) MMIC switch is used as a variable attenuator and a second SPDT MMIC switch which acts as a transmit-receive switch is used as an output power detector. In receive mode, both SPDTs are used as switches. Overall, the power control for the entire TR module results in an increase of the module yield through compensation of chip spread and temperature effects. The multiple use of the SPDT MMICs as switches, variable attenuator and power detector saves costs. |
