## Abstract A dual‐band 1:3 series power divider that provides equal power splits to all three output ports is presented. To achieve dual‐band working, the divider employs, instead of conventional transmission lines of one wavelength, the composite right/left‐handed transmission lines (CRLH TLs) yi
Design strategies for dual-band Class-E power amplifier using composite right/left-handed transmission lines
✍ Scribed by Mury Thian; Vincent Fusco
- Publisher
- John Wiley and Sons
- Year
- 2007
- Tongue
- English
- Weight
- 381 KB
- Volume
- 49
- Category
- Article
- ISSN
- 0895-2477
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✦ Synopsis
Abstract
In this article we propose a technique for dual‐band Class‐E power amplifier design using composite right/left‐handed transmission lines, CRLH TLs. Design equations are presented and design procedures are elaborated. Because of the nonlinear phase dispersion characteristic of CRLH TLs, the single previous attempt at applying this method to dual band Class‐E amplifier design was not sufficient to simultaneously satisfy the minimum requirement of Class‐E impedances at both the fundamental and the second harmonic frequencies. This article rectifies this situation. A design example illustrating the synthesis procedure for a 0.5W‐5V dual band Class‐E amplifier circuit simultaneously operated at 900 MHz and 2.4 GHz is given and compared with ADS simulation. © 2007 Wiley Periodicals, Inc. Microwave Opt Technol Lett 49: 2784–2788, 2007; Published online in Wiley InterScience (www.interscience.wiley.com). DOI 10.1002/mop.22836
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## Abstract A dual‐band RF switch that utilizes composite right/left handed (CRLH) transmissions‐lines(TLs) and PIN diodes is proposed. The design method of RF switch is based on the phase characteristic of the CRLH‐TL, which can be adjusted arbitrary, and employed conventional type‐II; filter stru