Planar Miniaturized Balanced-to-Single-Ended Power Divider Based on Composite Left- and Right-Handed Transmission Lines

A planar asymmetrical miniaturized circuit based on composite left- and right-handed transmission lines (CLRHTLs) is proposed to design a new balanced-to-single-ended (BTSE) power divider (PD) in this letter. The CLRHTLs are used to realize circuit miniaturization and positive-phase response. Conversion between the mixed-mode scattering parameters and the standard scattering parameters, and circuit analytical methods are discussed to realize the equal power division in phase from one differential input to two SE outputs. To verify the correctness of the proposed theory, a practical BTSE PD, which operates at 0.95 GHz, is designed and fabricated. The measured relative bandwidth is 26.3%, and the final circuit size is only $0.021~\lambda _{g}^{2}$ .

[1]  Fan Zhang,et al.  Miniaturized Gysel Power Divider Based on Composite Right/Left-Handed Transmission Lines , 2015, IEEE Microwave and Wireless Components Letters.

[2]  Jun-Fa Mao,et al.  A new balanced-to-single-ended (BTSE) power divider , 2014, 2014 IEEE International Wireless Symposium (IWS 2014).

[3]  Fadhel M. Ghannouchi,et al.  A Wideband Balanced-to-Unbalanced Coupled-Line Power Divider , 2016, IEEE Microwave and Wireless Components Letters.

[4]  T. Itoh,et al.  Arbitrary dual-band components using composite right/left-handed transmission lines , 2004, IEEE Transactions on Microwave Theory and Techniques.

[5]  Kai Xu,et al.  A Balanced-to-Unbalanced Microstrip Power Divider With Filtering Function , 2015, IEEE Transactions on Microwave Theory and Techniques.

[6]  Junfa Mao,et al.  A New Balanced-to-Balanced Power Divider/Combiner , 2012, IEEE Transactions on Microwave Theory and Techniques.