In this contribution, a novel method to design broadband nonreciprocal phase shifters (NRPS) is illustrated: this new topology is based on the combination of two directive-distributed amplifiers with a four-port phase-shifting network. The presented approach includes explicit design formulae allowing for arbitrary differential-phase implementation. Extensive design description of a 180° NRPS, acting as broadband differential-phase inverter, is also provided. The 3.5×3.4mm2 demonstrator, realized in 0.5μm GaN HEMT technology, has an average zero insertion loss up to 25 dBm of input power, 180° ± 2° differential-phase shift, and good port matching over the 3–7-GHz operating bandwidth.
Palomba, M., Palombini, D., Colangeli, S., Ciccognani, W., Limiti, E. (2018). Broadband Nonreciprocal Phase Shifter Design Technique. IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES, 66(4), 1964-1972 [10.1109/TMTT.2017.2785816].
Broadband Nonreciprocal Phase Shifter Design Technique
Colangeli, Sergio;Ciccognani, Walter;Limiti, Ernesto
2018-04-01
Abstract
In this contribution, a novel method to design broadband nonreciprocal phase shifters (NRPS) is illustrated: this new topology is based on the combination of two directive-distributed amplifiers with a four-port phase-shifting network. The presented approach includes explicit design formulae allowing for arbitrary differential-phase implementation. Extensive design description of a 180° NRPS, acting as broadband differential-phase inverter, is also provided. The 3.5×3.4mm2 demonstrator, realized in 0.5μm GaN HEMT technology, has an average zero insertion loss up to 25 dBm of input power, 180° ± 2° differential-phase shift, and good port matching over the 3–7-GHz operating bandwidth.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
