C frequency band miniaturization one-transmitter four-receiver medium frequency unit

Abstract

The invention discloses a C frequency band miniaturization one-transmitter four-receiver medium frequency unit, which is used for a C frequency band on-board satellite communication system. The C frequency band miniaturization one-transmitter four-receiver medium frequency unit is constituted by a modulator, a demodulator, a frequency synthesizer, an amplifier, an attenuator, an attenuation amplifier, a filter, a filter amplifier, and a switch, and is controlled by serial interfaces. The C frequency band miniaturization one-transmitter four-receiver medium frequency unit is especially suitablefor being used as a transceiving integrated medium frequency unit of an on-board satellite communication terminal, and has advantages of miniaturization, low power consumption, integrated design, high speed frequency hopping, high transceiving isolation degree, stable performance, and ability of functioning normally in severe environment. The C frequency band miniaturization one-transmitter four-receiver medium frequency unit comprises four separation cavities, and transceiving signals are effectively isolated from each other by adopting spatial cavity separation, and then transmitting signals are prevented from being coupled with receiving signal by the space, and receiving performance cannot be affected; and in addition, by adopting effective filtering of transceiving medium frequency control signals, the high frequency signals of the control signals can be filtered effectively, and the demodulation performance of the receiving medium frequency unit can be obviously improved.

Description

technical field [0001] The invention relates to a C-band miniaturized one-transmit-four-receive intermediate frequency unit in the field of wireless communication, and is particularly suitable for use as an intermediate frequency unit integrated with sending and receiving of airborne satellite communication equipment. Background technique [0002] At present, in the field of airborne satellite communication, due to the requirements of different communication systems and applications, modem terminals usually need to include multiple transmission and reception channels. In a limited space, due to the poor isolation of transmission and reception, the transmission signal is easily coupled to the reception signal. , causing crosstalk between transceivers and affecting reception performance. In order to improve the demodulation performance of the receiving channel of the airborne satellite communication terminal, in addition to meeting the requirements of miniaturization, low powe...

AI Technical Summary

Problems solved by technology

At present, the integrated transceiver IF unit in satellite communication equipment cannot meet the requirements of miniaturization, low power consumption, multi-channel and high transceiver isolation.

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