A Novel Spatial Power Combining Amplifier Based on Quasi-Yagi Antenna

Haiyan JIN  Guangjun WEN  Rangning LV  Jian LI  

IEICE TRANSACTIONS on Electronics   Vol.E93-C   No.3   pp.416-419
Publication Date: 2010/03/01
Online ISSN: 1745-1353
DOI: 10.1587/transele.E93.C.416
Print ISSN: 0916-8516
Type of Manuscript: BRIEF PAPER
Category: Microwaves, Millimeter-Waves
spatial power combiner,  quasi-Yagi antenna,  transition,  

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In this letter, a novel 4-way X-band spatial power divider/combiner has been developed using a modified quasi-Yagi antenna transition. The divider has an insertion loss of less than 0.5 dB and a power balance of +/-0.8 dB over a bandwidth of 3.5 GHz in the X-band. A power combiner amplifier using this circuit and four MMIC amplifiers has been demonstrated with 84% combining efficiency. The obtained results show that the modified quasi-Yagi antenna is a suitable element to develop a broadband spatial power combiner.