A wideband antenna array with novel 3dB branch-line power dividers as feeding network

In this paper we introduce a novel type of wide bandwidth branch-line power divider that does not require surface mount resistors, loads at the ports nor bond wires and hence it can be manufactured using traditional 2D photolithography. The circuit is implemented in microstrip technology and its BW is about 40% with a rejection below -14 dB. This divider is implemented on a corporate feeding network, which feeds a two and four antenna array. The design procedures along with simulated and experimental results of the whole network are presented.