This article presents a new GaN HEMT-based high-power single-pole double-throw (SPDT) switch operating over the X-band frequencies. The GaN SPDT MMIC switch is presented, having good return loss (better than 16.8 dB) and insertion loss (1.4 dB) measured across X-band. It also has a very high power-handling capability, with a measured 1 dB compression point of 38 dBm. The techniques and design principles leading to this level of performance are discussed. Circuit performance is confirmed by experimental and simulation results, which are in good agreement up to 20 GHz.

Additional Metadata
Keywords GaN, high linearity, high power, SPDT switch
Persistent URL
Journal Microwave and Optical Technology Letters
Hettak, K. (Khelifa), Ross, T.N. (Tyler N.), Cormier, G. (Gabriel), & Wight, J. S. (2013). Broadband high-power GaN SPDT switch using stacked-shunt fets and resonance inductors. Microwave and Optical Technology Letters, 55(9), 2093–2095. doi:10.1002/mop.27788