Miniaturized power detection module operating in millimeter wave band

Abstract

The miniaturized broadband detection module can be embedded into the microwave application system such as the front end of the transmitter to detect the power or other parameters in real time. It is highly prospective in military and scientific research. In this paper, a broadband power detection module operating at 26.5 ​GHz–40.0 ​GHz is designed by using low-barrier Schottky diode as the detector and a comparator for threshold output. This module can dynamically detect the power range between −10 ​dBm and 10 ​dBm with the detection accuracy of 0.1 ​dB. Further, the temperature compensation circuit is also applied to improve the measurement error. As a result, the resulted error low to ±1 ​dB in the temperature range of −55 ​°C to +85 ​°C is achieved. The designed module is encapsulated by a Kovar alloy with a small volume of 9 ​mm ​× ​6 ​mm ​× ​3 ​mm. This endows the designed module the advantages of small size, easy integration, and low cost, and even it is applicable to high-reliability environments such as satellites.

Keywords

Diode / Miniaturization / Power detection / Temperature compensation

Funding

This work was financially supported by the Sichuan Provincial Natural Science Foundation Project under Grant No. 2023NSFSC0048.

Declaration of competing interest

We declare that we have no financial and personal relationships with other people or organizations that can inappropriately influence our work, there is no professional or other personal interest of any nature or kind in any product, service and/or company that could be construed as influencing the position presented in, or the review of, the manuscript entitled“Miniaturized power detection module operating in millimeter wave band”.

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