Open AccessCompact wideband differential filtering power divider based on three‐line coupled structure with lumped elements
Author(s) -
Dong Jiancheng,
Shi Jin,
Xu Kai
Publication year - 2020
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
ISSN - 1350-911X
DOI - 10.1049/el.2020.0475
Subject(s) - power dividers and directional couplers , wideband , resistor , bandwidth (computing) , capacitor , wilkinson power divider , electronic engineering , frequency divider , engineering , topology (electrical circuits) , electrical engineering , telecommunications , voltage
A wideband differential filtering power divider using three‐line coupled structure with multiple lumped elements is proposed. The equal power division ratio, filtering response, isolation and common‐mode suppression are mainly derived from the symmetrical structure, three‐line coupled lines with capacitors, resistors and the short lines along the vertical symmetrical line, respectively. Compared to the reported differential filtering power dividers, the proposed design shows advantages of wide bandwidth, compact size and low insertion loss (IL). A prototype with the small size of 0.5 λ g × 0.08 λ g ( λ g is the guided wavelength at the centre frequency) was designed for demonstration, which exhibits the 3 dB fractional bandwidth of 79.2% and the minimum IL of 0.48 dB.