The three symmetric power divider ports, compact, fixed, and tunable based on micro-strip technology
✍ Scribed by A. Jrad; T. Safarjalani; J.-M. Duchamp; P. Ferrari; A. El-Helwani
- Publisher
- John Wiley and Sons
- Year
- 2009
- Tongue
- English
- Weight
- 380 KB
- Volume
- 51
- Category
- Article
- ISSN
- 0895-2477
No coin nor oath required. For personal study only.
✦ Synopsis
Abstract
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