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A millimeter-wave two-port subharmonic mixer

A mixer and two-port technology, applied in the field of millimeter-wave two-port subharmonic mixers, can solve the problems that the arrayed millimeter-wave imaging system cannot be effectively applied and cannot be arranged along a straight line, and achieve low cost and mechanical The effect of high strength and wide operating frequency

Active Publication Date: 2019-11-19
SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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Problems solved by technology

[0003] The patent "W-band Second Subharmonic Mixer" (China, CN102611390A, 2012.07.25) describes the conventional circuit structure of the three-port subharmonic The three input / output ports of vibration and intermediate frequency cannot be arranged in a straight line, and cannot be well arranged in a compact array layout, and cannot be effectively applied to array millimeter wave imaging systems

Method used

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  • A millimeter-wave two-port subharmonic mixer
  • A millimeter-wave two-port subharmonic mixer
  • A millimeter-wave two-port subharmonic mixer

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Embodiment

[0021] The present invention proposes a common port input of radio frequency signal and local oscillator signal and a common matching circuit feeding and matching method, which meets the requirement that the input and output ports of the receiving front-end mixer of the millimeter wave array imaging system are on the same straight line, and adopts a planar The microstrip printed circuit technology realizes the characteristics of high mechanical strength, high processing precision and low cost.

[0022] The present invention provides a structure of a millimeter-wave two-port subharmonic mixer such as Figure 1 ~ Figure 3 As shown, it is printed on a dielectric substrate by printed circuit technology, and the Schottky diode is mounted on the circuit substrate and placed in a metal shielding cavity 1 . The mixer is composed of a metal shielding chamber 1, a printed circuit 2, and a Schottky diode 3. The printed circuit 2 is further composed of a double-octave rectangular wavegui...

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Abstract

The invention provides a millimeter-wave two-port sub-harmonic mixer. The mixer comprises a doubled frequency interval rectangular waveguide-anti-pole fin line-microstrip transitional circuit, a radioffrequency local oscillation matching circuit, a low-pass filtering circuit and an anti-parallel diode pair; the doubled frequency interval rectangular waveguide-anti-pole fin line-microstrip transitional circuit, the radio ffrequency local oscillation matching circuit and the low-pass filtering circuit and an anti-parallel diode pair are printed on a dielectric substrate; and the anti-parallel diode pair is carried on a circuit substrate. According to the mixer provided by the invention, a radio frequency signal and a local oscillation signal are input from the same port while an intermediate frequency signal is output by a single port; and the millimeter-wave two-port sub-harmonic mixer has the characteristics of capability of forming the input and output ports in the same straight line, broad working frequency band, low frequency conversion loss, low cost and the like, and can be effectively applied to a millimeter-wave array imaging system.

Description

technical field [0001] The invention relates to the technical field of millimeter wave imaging, in particular to a millimeter wave two-port subharmonic mixer. Background technique [0002] The traditional millimeter-wave subharmonic mixer is a three-port device that includes an RF signal input port, a local oscillator signal input port, and an intermediate frequency signal output port, and does not involve two-port subharmonics for arrayed millimeter-wave imaging systems. Mixer method and related apparatus. [0003] The patent "W-band Second Subharmonic Mixer" (China, CN102611390A, 2012.07.25) describes the conventional circuit structure of the three-port subharmonic The three input / output ports of the vibration and intermediate frequency cannot be arranged in a straight line, and cannot be well arranged in a compact array layout, and cannot be effectively applied to an array millimeter-wave imaging system. Contents of the invention [0004] The purpose of the present in...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H01P1/213H03D7/02
Inventor 赵伟曾斌姜和森张建成
Owner SOUTHWEST CHINA RES INST OF ELECTRONICS EQUIP
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