Open AccessReconfigurable hybrid matrix‐based power divider with variable power‐dividing ratios and frequencies
Author(s) -
Kim J.,
Yang J.R.,
Oh J.
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.2020.1277
Subject(s) - varicap , power dividers and directional couplers , wilkinson power divider , electrical impedance , frequency divider , insertion loss , return loss , transmission line , characteristic impedance , electric power transmission , electrical engineering , engineering , materials science , capacitance , physics , antenna (radio) , electrode , quantum mechanics
In this Letter, the authors present a reconfigurable power divider using a hybrid matrix with variable impedance tuners. The proposed hybrid matrix‐based power divider with varactor‐tuned impedance tuners (VTITs) can simultaneously obtain variable power‐dividing ratios at the centre frequency and variable operating frequencies for the 3 dB coupling states. The VTITs, consisting of a transmission line, an inductor, and a varactor located between the line and the inductor, are connected in parallel between two hybrid couplers for high impedance variation. Measured results demonstrate that the power‐dividing ratio of the proposed divider varies from −14.3 to 13.3 dB with a return loss above 20 dB and the isolation above 20 dB at a centre frequency of 2.45 GHz. Moreover, it achieves an insertion loss of 0.7–1.45 dB and a phase variation of less than 8° across the variable power‐dividing ratio at the centre frequency. The frequency‐tuning range for the 3 dB coupling states is 750 MHz with a small phase variation of 5°.