Compact Wideband Modified Wilkinson Filtering Power Divider with Wide Upper Stopband

Abstract

A compact wideband modified Wilkinson-type filtering power divider (MWFPD) with wide stopband is presented. The MWFPD is developed by cascading a modified Wilkinson power divider (MWPD) and a filtering section constituting stepped-impedance resonator (SIR)-loaded three-coupled lines (TCLs). The arms of the MWPD also consist of SIRs. By suppressing harmonics using a single open stub at the input port only, the upper stopband is extended up to 20 GHz with 20 dB rejection. The designed MWFPD has also been fabricated to verify the mathematical and electromagnetic simulation results. The measured results exhibit an excellent agreement with the predicted results. The center frequency of the fabricated circuit has been measured at 4.36 GHz with a fractional bandwidth (FBW) of 44 %. The proposed MWFPD not only exhibits competitive performance but also provides ease of fabrication and design.

Keywords

• Filtering power divider
• modified Wilkinson power divider
• wide stopband

Geniş Üst Durdurma Bantlı Kompakt Modifiye Edilmiş Geniş Bant Wilkinson Filtreleyen Güç Bölücü

Öz

Geniş durdurma bandına sahip kompakt geniş bantlı modifiye edilmiş Wilkinson tipi filtreleme güç bölücü (MWFPD) sunulmaktadır. MWFPD, modifiye edilmiş bir Wilkinson güç bölücü (MWPD) ve basamak empedans rezonatörü (SIR) yüklü üç kuplajlı hatlardan (TCL) oluşan bir filtreleme bölümünün kaskat bağlanmasıyla geliştirilmiştir. MWPD'nin kolları da SIR'lerden oluşmaktadır. Sadece giriş portunda tek bir açık devre sonlandırmalı saplama kullanılmasıyla harmonikler bastırılarak üst durdurma bandı 20 dB reddetme ile 20 GHz'e kadar uzatılmaktadır. Tasarlanan MWFPD ayrıca matematiksel ve elektromanyetik simülasyon sonuçlarını doğrulamak için imal edilmiştir. Ölçülen sonuçlar öngörülen sonuçlarla mükemmel bir uyum göstermektedir. Üretilen devrenin merkez frekansı %44'lük kısmi bant genişliği (FBW) ile 4.36 GHz'de ölçülmüştür. Önerilen MWFPD sadece rekabetçi bir performans sergilemekle kalmayıp aynı zamanda üretim ve tasarım kolaylığı da sunmaktadır.

Anahtar Kelimeler

• Filtreleyen Güç Bölücü
• modifiye edilmiş Wilkinson güç bölücü
• geniş durdurma bandı

Kaynakça

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