Anti-interference antenna with direct connection function

The invention discloses an anti-interference antenna with a direct connection function; the antenna comprises a radio-frequency unit formed by a BD four-element array, a four-way beidou low noise amplifier and path, a one-way beidou low noise amplifier, a local oscillator, an upper-conversion, a combiner, a GPS oscillator, a GPS low noise amplifier, and a radio-frequency amplifier; the antenna also comprises an anti-interference unit, a LDO1 power supply unit, a LDO2 power supply unit, a power supply and BD/GPS detection unit, and a single chip containing an antenna work procedure. When the anti-interference function of the antenna fails, the antenna can enter a direct connection work state so as to ensure normal work of the antenna; the antenna can realize controlled direct connection function: the antenna can have the direct connection function when receiving an outer direct connection order; the antenna has the fault direct connection function: the antenna can have the direct connection ability when the anti-interference unit of the anti-interference antenna fails.