A newly asymmetrical spurline structure is presented in this article. Its dual-bandgap characteristics art reported and call be adjusted by changing the length difference between spurlines. Then, a simple circuit model is set up for the spurline structure by using two LCR-resonators and the circuit parameters call be extracted front EM simulations. Moreover, a Wilkinson power divider using the proposed spurlines was designed, fabricated, and measured. Experimental results verify that 27-dB suppression for the second harmonic and 30-dB suppression for the third harmonic are obtained, respectively. In addition, the reflection coefficients are -3.5 dB +/- 0.3 dB (-3 dB for ideal case) below 3.8 GHZ and -3.7 dB at the operating frequency 3.12 GHz. (c) 2008 Wiley Periodicals, Inc.
1.Chinese Acad Sci, Inst Opt & Elect, Chengdu 610209, Peoples R China 2.Univ Kiel, High Frequency Tech Grp, D-24143 Kiel, Germany 3.Zhejiang Univ, Dept Informat & Elect Engn, Hangzhou 310027, Peoples R China 4.Univ Magdeburg, D-39106 Magdeburg, Germany 5.Tech Univ Hamburg, Hochfrequenztech Inst, Hamburg, Germany
Liu, Hai-Wen,Shi, Zhiguo,Boutejdar, Ahmed,et al. Harmonics suppression of Wilkinson power divider using spurlines with adjustable rejection bands[J]. MICROWAVE AND OPTICAL TECHNOLOGY LETTERS,2008,50(3):601-604.