ULTRA-WIDEBAND ADJUSTABLE PHASE SHIFTING UNIT LOADED WITH FAN-SHAPED WIRE REFLECTION LOAD

摘要

Disclosed by the present utility model is an ultra-wideband adjustable phase shifting unit that is loaded with a fan-shaped wire reflection load. The ultra-wideband adjustable phase shifting unit comprises: an input node, an output node and a quadrature coupler. The input node that receives a signal to be phase-shifted is connected to the input end of the quadrature coupler, the output node that outputs a phase-shifted signal is connected to the isolated end of the quadrature coupler, and the through end and coupled end of the quadrature coupler are each connected to a single-port variable reflective load unit. The present utility model uses the reflective phase-shift circuit architecture of the quadrature coupler, can achieve good input and output standing wave characteristics in an octave band range, and further combines a relatively large phase-shift range and relatively low additional amplitude variations within an ultra-wideband range, thus greatly reducing the circuit consistency problem caused by process fluctuations during production.