Open AccessModified Wilkinson power divider using coupled microstrip lines and shunt open‐ended stubs
Author(s) -
Ahmed U.T.,
Abbosh A.M.
Publication year - 2015
Publication title -
electronics letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.375
H-Index - 146
eISSN - 1350-911X
pISSN - 0013-5194
DOI - 10.1049/el.2015.0595
Subject(s) - wilkinson power divider , microstrip , return loss , power dividers and directional couplers , current divider , wideband , resistor , impedance matching , bandwidth (computing) , shunt (medical) , electrical engineering , electrical impedance , insertion loss , electronic engineering , engineering , physics , telecommunications , frequency divider , voltage , antenna (radio) , medicine , cardiology
The design of a modified Wilkinson power divider for wideband applications is presented. Instead of using a T‐junction at the input port of the traditional design, the proposed divider uses broadside‐coupled microstrip to slotline configuration to extend the impedance matching bandwidth at the input port. Moreover, a coupled structure with two isolation resistors and two open‐ended stubs is used to enhance isolation and matching of the output ports across a wide band. The device has an overall dimension of 40 × 70 mm using the substrate Rogers RO4003 (dielectric constant = 3.38 and thickness = 0.508 mm). The simulated and experimental results show more than 100% fractional bandwidth assuming 16 dB of isolation and 10 dB of return loss as the reference. The device has equal power division between the two output ports with <0.2 dB amplitude imbalance and <2° phase imbalance across the band 1–3 GHz.