which book is best for microwave component design >

Hi,

Can anyone tell me that which book is best for practical designing of power splitter/combiner at high frequency(1.8 GHz) with high handling power capacity (50 watts ) ?

Thanks

first learn the basics about splitter/combiner using Microwave engineering 3e by Pozar then u can use this paper.

A Novel Broadband High-Power Combiner
Qingxin Guo,Yanjun Ma and Jilong Ju IEEE