%0 Journal Article %T Miniaturized microstrip branch‐line couplers with the approach of π‐model %A Tang, Ching‐Wen %A Chen, Ming‐Guang %J Microwave and Optical Technology Letters %V 50 %N 2 %P 314-316 %@ 0895-2477 %D 2008-02-01 %I Wiley Subscription Services, Inc., A Wiley Company %~ DeepDyve