Millimeter wave voltage-controlled attenuator applied to 5G

Abstract

The invention discloses a millimeter wave voltage-controlled attenuator applied to 5G. The millimeter wave voltage-controlled attenuator comprises a comparator, a first switch, an attenuation channel,an amplification channel and a second switch, the comparator is used for receiving the signal, comparing the signal with a preset threshold value and controlling level signals of the first switch andthe second switch according to a comparison result; the first switch transmits the signal to an attenuation channel or an amplification channel according to a self level signal, and the attenuation channel is used for attenuating the signal; the amplification channel is used for amplifying the signal; the second switch outputs a signal of the attenuation channel or the amplification channel according to the level signal of the second switch; the first switch and the second switch are both single-pole double-throw switches, and each switch comprises a plurality of transistor control circuits and a multi-coupling coil circuit. Two channels is switched by configuring level signals of each transistor control circuit; load switching technology is introduced into a moving end, so that switchingof different input loads is realized; each port of the switch is isolated by a plurality of coils. According to the attenuator, the attenuation efficiency and the anti-interference capability are improved.

Description

technical field [0001] The invention belongs to the technical field of attenuators, and in particular relates to a millimeter wave voltage-controlled attenuator applied to 5G. Background technique [0002] An attenuator is an electronic component that provides attenuation and is widely used in electronic equipment. Its main purpose is: (1) to adjust the size of the signal in the circuit; (2) in the comparison method measurement circuit, it can be used for direct reading The attenuation value of the network under test; (3) Improving impedance matching. If some circuits require a relatively stable load impedance, an attenuator can be inserted between this circuit and the actual load impedance to buffer impedance changes. [0003] With the rapid development of optoelectronic devices, the application proportion of millimeter-wave devices in the field of electronic technology is increasing, and the millimeter-wave voltage-controlled attenuator plays a very important role whether ...

AI Technical Summary

Problems solved by technology

[0003] With the rapid development of optoelectronic devices, the application proportion of millimeter-wave devices in the field of electronic technology is increasing, and the millimeter-wave voltage-controlled attenuator plays a very important role whether it is a single-working device or integrated in a complex small system. However, the power adjustment range of the current millimeter-wave voltage-controlled attenuator is relatively single, and due to the high operating frequency and large line loss of the millimeter-wave device, it is difficult to achieve a good efficiency in the control of the millimeter-wave voltage-controlled attenuator and anti-interference ability

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