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Frontiers of Information Technology & Electronic Engineering
ISSN 2095-9184 (print), ISSN 2095-9230 (online)
2025 Vol.26 No.7 P.1237-1242
Miniaturized diplexer with wide-stopband based on half-mode SIW
Abstract: A miniaturized diplexer with wide-stopband based on half-mode substrate integrated waveguide (HM‐SIW) is proposed. The diplexer combines dual-mode resonator (DMR) with single-mode resonators (SMRs). The employment of HMSIW technology breaks through the limitations of SMRs on miniaturization, while effectively addressing the limitation on wide-stopband performance that is typically encountered with the TE202 mode in the SMRs. A second-order prototype, centered at 10.34 GHz and 13.9 GHz, has been designed and fabricated, utilizing a TE101/TE301 DMR. The measured out-of-band rejection is better than 20 dB with a frequency of up to 2.16 f 1. Meanwhile, the size of the diplexer is reduced to 1.363 λ g2.
Key words: Diplexer; Substrate integrated waveguide; Miniaturization; Half-mode; Wide-stopband; Intrinsicmode suppression technique
西安电子科技大学微电子学院，中国西安市，710071
摘要：基于半模基片集成波导（HMSIW），提出一种宽阻带小型化双工器。该双工器将双模谐振器（DMR）与单模谐振器（SMR）相结合。采用HMSIW技术突破了SMR在小型化方面的限制，同时有效解决了SMR中常见的TE202模式对宽阻带性能的限制。采用TE101/TE301DMR设计并制造了一个二阶原型，原型的中心频率分别为10.34 GHz和13.90GHz。测量结果显示，该双工器的阻带范围为2.16f1（f1是通道1的中心频率），具有优于20 dB的带外抑制水平。与此同时，该双工器的尺寸被显著缩小至1.363λg2（λg是f1时介质基底中的导波波长）。
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DOI:
10.1631/FITEE.2400944
CLC number:
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On-line Access:
2025-03-14
Received:
2024-10-20
Revision Accepted:
2025-01-24
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