D. P. Clayton and  E. A. Ball,  An Investigation into the Isolation and Bandwidth Characteristics of X-Band Chireix PA Combiners.   journal   = {International Journal of Electronics and Communication Engineering}, [online]. World Academy of Science, Engineering and Technology.
    July 2023, vol. 199(7). 168 - 172
    [viewed 27 April 2024]. Available from: https://publications.waset.org/pdf/10013166.