Broadband microwave frequency doubler based on left-handed nonlinear transmission lines<xref rid="cpb_26_3_037306fn1" ref-type="fn">*</xref><fn id="cpb_26_3_037306fn1"><label>*</label><p>Project supported by the Young Scientists Fund of the National Natural Science Foundation of China (Grant No. 61401373) and the Research Fund for the Doctoral Program of Southwest University, China (Grant No. SWU111030).</p></fn>

Broadband microwave frequency doubler based on left-handed nonlinear transmission lines**

Project supported by the Young Scientists Fund of the National Natural Science Foundation of China (Grant No. 61401373) and the Research Fund for the Doctoral Program of Southwest University, China (Grant No. SWU111030).

Huang Jie^{1, †}, Gu Wenwen¹, Zhao Qian²

(color online) (a) CRLH NLTL unit and (b) equivalent circuit model of 5-unit CRLH NLTLs.