Dual-mode mixer

摘要

The present invention relates to a mixer for signals at different frequencies comprising a network of diodes formed by a pair of diodes mounted in an anti-parallel manner, the first linking point of the diodes being connected to the ground, the second linking point being connected to the ports of transmission/reception signal paths and to the port of a local oscillator path at different frequencies. An impedance matching network for dual-mode use is connected in series in the diode network between the first linking point connected to the ground and the anode of one of the diodes of the diode network. A filtering network is connected between the second linking point and each of the ports of the transmission/reception paths and of the local oscillator path.

主权项

1. A mixer of signals at different frequencies corresponding to a transmission mode and a reception mode, the mixer comprising:
a network of diodes comprising a pair of diodes mounted in an anti-parallel manner, a first linking point of the diodes being connected to the ground, the second linking point of the diodes being connected to the ports of transmission/reception signal paths and to the port of a local oscillator at different frequencies, and a filtering network connected between the second linking point and each of the ports of the transmission/reception paths and of the local oscillator path, wherein an impedance matching network, for a dual-mode use in transmission mode and in reception mode, is connected in series in the network of diodes between the first linking point connected to the ground and the anode of one of the diodes of the network of diodes, and is configured to operate in a first open circuit state in transmission mode and in a second short-circuit state in reception mode.