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) Photograph of the 7.16 mm Ka MMIC harmonic generator on CRLH NLTLs, (b) unit cell dimension of CRLH NLTL without PSVDs, (c) photograph of PSVD, and (d) schematic of MIM capacitor.