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Detecting, evaluating mismatch to antenna connected to end stage involves detecting actual reverse power, compared with desired value, altering forward demand if desired value exceeded
Detecting, evaluating mismatch to antenna connected to end stage involves detecting actual reverse power, compared with desired value, altering forward demand if desired value exceeded
The method involves coupling out part of the forward power from the end stage and part of the reverse power reflected by the antenna, detecting the actual forward value in a forward control loop, comparing it with a desired value from a table and varying the end stage transmission power accordingly. The actual reverse value is detected and compared with a desired value; if the desired value is exceeded the desired forward value can be altered. The method involves coupling out part of the forward power from the end stage and a further part of the reverse power reflected by the antenna from between the end stage (4) and the antenna (7), detecting the actual forward value (15.2) in a forward control loop, comparing it with a desired value (16.2) from a table and varying the end stage transmission power accordingly. The actual reverse value (15.1) is detected and compared with a desired value (16.1); if the desired value is exceeded the desired forward value can be altered. Independent claims are also included for the following: a mobile radio device.
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