Title :
A Broadband 1-to-
Power Divider/Combiner With Isolation and Reflection Cancellation
Author :
Darwish, Ali M. ; Ibrahim, Amr A. ; Qiu, Joe X. ; Viveiros, Edward ; Hung, H. Alfred
Author_Institution :
Army Res. Lab., Adelphi, MD, USA
Abstract :
A novel 1-to- N broadband “ iπ-wave” power divider/combiner with reflection cancellation is presented and demonstrated. The new iπ-wave structure provides reflection cancellation and output port isolation with 1-to- N (arbitrary N) signal splitting or N-to-1 summing. It has low loss due to its use of low-impedance transmission lines and provides a relative bandwidth of 50%-200%. The concept is studied theoretically and demonstrated experimentally with several 1-to-4 dividers. The divider/combiner pair provides power amplifiers with broadband operation and well-matched input/output impedances. The concept can be implemented in hybrid circuits or monolithic microwave integrated circuits (MMICs).
Keywords :
power amplifiers; power combiners; power dividers; wideband amplifiers; broadband 1-to- N power combiner; broadband 1-to- N power divider; iπ-wave structure; input impedance; isolation cancellation; low-impedance transmission lines; output impedance; power amplifiers; reflection cancellation; Bandwidth; Broadband communication; Delay lines; Delays; Impedance; Ports (Computers); Resistors; Balanced amplifier; Wilkinson divider; power combiner; power divider;
Journal_Title :
Microwave Theory and Techniques, IEEE Transactions on
DOI :
10.1109/TMTT.2015.2431690