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The three symmetric power divider ports, compact, fixed, and tunable based on micro‐strip technology
Author(s) -
Jrad A.,
Safarjalani T.,
Duchamp J.M.,
Ferrari P.,
ElHelwani A.
Publication year - 2009
Publication title -
microwave and optical technology letters
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.304
H-Index - 76
eISSN - 1098-2760
pISSN - 0895-2477
DOI - 10.1002/mop.24005
Subject(s) - electrical engineering , wilkinson power divider , transformer , capacitor , electrical impedance , transmission line , power dividers and directional couplers , electric power transmission , microwave , engineering , frequency divider , telecommunications , voltage
We produced three symmetric power divider ports, compact, fixed, and tunable based, with hybrid technology by using capacitors CMS or commercial diode varactors, at low costs. These dividers consist of an impedance transformer in the shape of T in entry and by two transmission lines with an impedance of 50 Ω on the two output ports. The impedance transformer contains a transmission line with electrical length θ 1 , a fixed capacitor C or variable (diode), and another transmission line with electrical length θ 2 . We designed these power dividers at working central frequencies 900 and 1800 MHz for GSM applications by using two substrates: Epoxy and RO4003. The band pass should be higher than 20% around central frequency for a good adaptation (S 11 < −20 dB) and also for losses lower than 0.3 dB. The size of our dividers is more than two times shorter than a classical Wilkinson power divider. © 2008 Wiley Periodicals, Inc. Microwave Opt Technol Lett 51: 229–232, 2009; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.24005