Millimeter wave broadband mixer based on asymmetric three-wire coupler

Abstract

The invention discloses a millimeter wave broadband mixer based on an asymmetric three-wire coupler. The millimeter wave broadband mixer comprises an asymmetric three-wire coupler structure, a reverse parallel grounding diode pair structure, a low-pass filter and the like. The asymmetric three-wire coupler structure, the reverse parallel grounding diode pair structure and the low-pass filter are connected in sequence; the asymmetric three-wire coupler structure is composed of three microstrip transmission lines which are coupled in parallel, a radio frequency input signal is connected with the left side end of the first transmission line, a local oscillator input signal is connected with the right side end of the third transmission line, and the right side end of the second transmission line is connected with the other end of the reverse parallel grounding diode pair structure, and is connected to the intermediate-frequency output. According to the mixer circuit, signal coupling between local oscillator input and a diode pair structure is enhanced, the mixing efficiency is improved, and the working bandwidth of the mixer is expanded.

Description

Technical field

[0001] The present invention relates to a mixer in a microwave and a millimeter wave circuit, and more particularly to an integrated circuit process to realize a mixer circuit of single-chip integrated, the design structure is simple, and the millimeter wave signal of the wideband can be converted to the intermediate frequency.Background technique

[0002] With high-speed data communication and the high-speed development of cloud computing services, existing wireless communication systems are difficult to meet increasing business needs. In order to improve communication capacity, it has become an inevitable trend to higher frequency bands. The millimeter wave band (30 ~ 300GHz) has rich bandwidth resources that achieve high-rate data transmission, with a wide range of application prospects in the fifth generation and next-generation wireless communications.

[0003] The mixer is one of the key modules in the millimeter wave front-end transceiver system, and the frequency conve...

Examples

Embodiment Construction

[0017]The present invention is further explained below in conjunction with the accompanying drawings and examples, and embodiments of the present invention include, but are not limited to, the following examples.

[0018]Such asfigure 1 As shown, a millimeter wave broadband mixer based on an asymmetric trip coupler comprises a non-symmetric trip coupler structure, reverse and coupling the diode pair structure, low pass filter, and the like. The millimeter wave broadband mixer is integrated with an integrated circuit process.

[0019]The asymmetric three-wire coupler structure is in reverse and coupling the diode sequentially connected to the structure and the low pass filter; the reverse and coupling of the diode is connected in parallel with two diodes D1 and D2, one of which is grounded; The asymmetric three-line coupler structure consists of three parallel coupled microstrip transmission lines, and the radio frequency input signal RF connects the left side end of the first transmission...

Technical field

[0001] The present invention relates to a mixer in a microwave and a millimeter wave circuit, and more particularly to an integrated circuit process to realize a mixer circuit of single-chip integrated, the design structure is simple, and the millimeter wave signal of the wideband can be converted to the intermediate frequency.Background technique

[0002] With high-speed data communication and the high-speed development of cloud computing services, existing wireless communication systems are difficult to meet increasing business needs. In order to improve communication capacity, it has become an inevitable trend to higher frequency bands. The millimeter wave band (30 ~ 300GHz) has rich bandwidth resources that achieve high-rate data transmission, with a wide range of application prospects in the fifth generation and next-generation wireless communications.

[0003] The mixer is one of the key modules in the millimeter wave front-end transceiver system, and the frequency conve...

Examples

Embodiment Construction

[0017]The present invention is further explained below in conjunction with the accompanying drawings and examples, and embodiments of the present invention include, but are not limited to, the following examples.

[0018]Such asfigure 1 As shown, a millimeter wave broadband mixer based on an asymmetric trip coupler comprises a non-symmetric trip coupler structure, reverse and coupling the diode pair structure, low pass filter, and the like. The millimeter wave broadband mixer is integrated with an integrated circuit process.

[0019]The asymmetric three-wire coupler structure is in reverse and coupling the diode sequentially connected to the structure and the low pass filter; the reverse and coupling of the diode is connected in parallel with two diodes D1 and D2, one of which is grounded; The asymmetric three-line coupler structure consists of three parallel coupled microstrip transmission lines, and the radio frequency input signal RF connects the left side end of the first transmission...

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