Về một giải pháp thiết kế bộ lọc thông dải hốc cộng hưởng dạng cài răng lược dải tần 4-8 GHz

Biên Đặng Thị Thùy; Nguyễn Thanh Hà; Phùng Thị Thu Phương

doi:10.54939/1859-1043.j.mst.88.2023.173-176

Authors

Dang Thi Thuy Bien (Corresponding Author) Institute of Electronics, Academy of Military Science and Technology
Nguyen Thanh Ha Institute of Electronics, Academy of Military Science and Technology
Phung Thi Thu Phuong Institute of Electronics, Academy of Military Science and Technology

DOI:

https://doi.org/10.54939/1859-1043.j.mst.88.2023.173-176

Keywords:

Bandpass filter; Interdigital cavity filter; Ultra Wide Band; CST.

Abstract

Ultra-high frequency band filters with a bandwidth of up to GHz (UWB) are an indispensable component in radio communication and reconnaissance systems. With the requirement of ultra-wide frequency band, high barrier loss and slope, the topology selection, design and simulation techniques, and manufacture technology need to be carefully researched to achieve desired parameters and quality of the filter. This paper proposed a solution to design and manufacture an ultra-wide band (4¸8 GHz) Interdigital cavity filter. CST software is used in the design and simulation to achieve dimensional accuracy and desired parameters. The filter operates at center frequency f₀ = 6 GHz with a bandwidth of FBW = 4 GHz, barrier loss of -40 dB and slope of 10 dB/100 MHz. The design and simulation results are optimized by the software, the post-manufactured filter is measured, evaluated and achieved the required criteria.

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