Terahertz broadband up-down conversion device and implementation method thereof

By designing a terahertz broadband up-conversion device with a local oscillator intermediate frequency multiplexing port and a built-in duplexer, the problem of poor compatibility in the existing technology is solved, realizing flexible frequency conversion in the terahertz band and wide applicability of the spectrum analyzer, and improving the purity and compatibility of spectrum analysis.

CN120979351AActive Publication Date: 2025-11-18BEIJING XINHANG TIMES TECH CO LTD
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Patent Information

Application Number
CN202511234394.1
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-09-01
Publication Date
2025-11-18
Estimated Expiration
2045-09-01

AI Technical Summary

Technical Problem

Existing upconversion and downconversion devices in the terahertz band have poor compatibility, which requires the separate purchase of downconversion and upconversion modules. Furthermore, the shared or separate port design of the local oscillator input and intermediate frequency output reduces the adaptability of the device.

Method used

Design a terahertz broadband up-conversion device, which adopts a local oscillator and intermediate frequency multiplexing port, with a built-in duplexer and flexible port jumpers, supports shared or independent port input/output for local oscillator/intermediate frequency. Up-conversion of signals is achieved through duplexer, mixer and intermediate frequency signal processor, and signal purity is improved through six frequency multiplier and isolator.

Benefits of technology

It enables flexible switching between terahertz downconversion and broadband vector signal upconversion, improving the compatibility and applicability of the device, supporting frequency expansion of spectrum analyzers from different manufacturers, reducing the noise figure, and improving the purity of spectrum analysis.

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Abstract

The invention belongs to the technical field of spectrum analysis, and discloses a terahertz broadband up-down conversion device and an implementation method thereof.The terahertz broadband up-down conversion device comprises a local oscillator intermediate frequency multiplexing port connected with an analyzer unit and used for receiving a local oscillator signal output by the analyzer unit; a duplexer; the local oscillation signal processor is used for filtering harmonic components of the local oscillation signal and converting the local oscillation signal to a local oscillation excitation frequency required by a target position in combination with a local oscillation link; the frequency mixing processor is used for receiving a local oscillator signal according to a radio frequency result of the local oscillator excitation frequency, and obtaining a terahertz signal of a measured wave band and outputting an intermediate frequency signal in combination with the waveguide interface; and an intermediate frequency signal processor. Based on the flexible local oscillator and intermediate-frequency port jumper design, the terahertz frequency band down-conversion signal output device not only can be used for spectrum analysis of terahertz frequency band down-conversion, but also can be used for signal output of terahertz frequency band broadband vector signal up-conversion.
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