Millimeter wave filtering frequency-selecting assembly and integrated circuit

Abstract

The invention discloses a millimeter wave filtering frequency-selecting assembly, and the assembly comprises: a first single-pole N-throw switch which receives a millimeter wave signal and outputs themillimeter wave signal through one non-fixed output port; a filter bank which comprises N-1 dielectric filters which are connected in parallel between the two switches, wherein the millimeter wave signal output by the first single-pole N-throw switch is filtered by using a corresponding dielectric filter to output a filtered signal; and a second single-pole N-throw switch which receives the filtering signal through one non-fixed input port and outputs the filtering signal through the output port. Each of the first single-pole N-throw switch and the second single-pole N-throw switch comprisesa multi-coupling coil circuit and a transistor control circuit, port isolation is realized by utilizing the multi-coupling coil circuit, and a port load is adjusted by utilizing a load switching technology; and the first single-pole N-throw switch is provided with a fixed output port connected with a 50-ohm load, and the second single-pole N-throw switch is provided with a fixed input port connected with the 50-ohm load. According to the invention, low out-of-band rejection, low insertion loss and high isolation can be realized.

Description

technical field [0001] The invention belongs to the field of circuits, and in particular relates to a millimeter wave filter frequency selection component and an integrated circuit. Background technique [0002] In current millimeter-wave products, in order to realize multi-channel frequency selection, filters of multiple frequency bands are required. Therefore, switches are usually used in circuit design to connect filters of multiple frequency bands to form filter frequency selection components. [0003] The current millimeter-wave filter frequency selection components mostly use microstrip filters, but since the microstrip is a semi-open structure, in order to ensure low out-of-band rejection, it usually results in a large insertion loss. At the same time, most of the switches in the existing millimeter-wave filter frequency selection components use PIN diode switches or solid-state FET switches. insertion loss. Contents of the invention [0004] In order to solve the...

AI Technical Summary

Problems solved by technology

[0003] The current millimeter-wave filter frequency selection components mostly use microstrip filters, but since the microstrip is a semi-open structure, in order to ensure low out-of-band rejection, it usually results in a large insertion loss

At the same time, most of the switches in the existing millimeter-wave filter frequency selection components use PIN diode switches or solid-state FET switches. insertion loss

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