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5GHz, 0°/ 180° Active Phase Shifter Design for Millimeter-Wave Applications  

Park, Chan-Gyu (영남이공대학교 전기자동화과)
Sin, Dong-Hwa (영남이공대학교 전기자동화과)
Lee, Dongho (영남이공대학교 전기자동화과)
Publication Information
Journal of Satellite, Information and Communications / v.12, no.2, 2017 , pp. 61-64 More about this Journal
Abstract
A phase shifter is one of the key components that change the phase of an individual antenna in millimeter-wave phased array system. This paper presents a low-loss phase shifter design with two parallel 2-state amplifiers. To get the same gain of $0^{\circ}/180^{\circ}$ each state, delay lines are in the middle of each stage of the 2-Stage amplifiers. Normally, when adding AMPs in parallel, a power combiner/divider such as Wilkinson Power Combiner/Divider is added, but they are directly connected because it can cause added losses in silicon wafer. The measured data shows 12dB gain and 174-degree phase difference at 5GHz.
Keywords
Phase Shifter; Phased Array; RF Amplifier; Millimeter-Wave Application; Active Switch;
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