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|1. (WO2018219321) MULTI-FREQUENCY ANTENNA SYSTEM, AND METHOD FOR CONTROLLING DIFFERENT FREQUENCY INTERFERENCE IN MULTI-FREQUENCY ANTENNA SYSTEM|
|Applicants:||HUAWEI TECHNOLOGIES CO., LTD.
|Title:||MULTI-FREQUENCY ANTENNA SYSTEM, AND METHOD FOR CONTROLLING DIFFERENT FREQUENCY INTERFERENCE IN MULTI-FREQUENCY ANTENNA SYSTEM|
Disclosed are a multi-frequency antenna system, and a method for controlling different frequency interference in a multi-frequency antenna system. The multi-frequency antenna system comprises at least one first radiating element and at least one second radiating element, and is characterized in that a working frequency range of the first radiating element is higher than a working frequency range of the second radiating element; each of the first radiating elements comprises a ground structure, a Balun and at least two radiating arms; one end of the Balun is electrically connected to the at least two radiating arms; the Balun comprises at least one conduction structure; the Balun is used for inputting, after acquiring a differential mode signal, the differential mode signal into the ground structure by means of the at least one conduction structure; and the differential mode signal is a signal obtained by the Balun sensing a signal from the second radiating element by means of a differential mode. By means of using the solution, different frequency interference caused by differential mode resonance between radiating elements at different frequencies can be reduced.