Design of Microstrip-Based Power Combiner /Divider for 700MHz-960MHz Band

In this paper, a microstrip power combiner /divider with low insertion loss and high isolation operated in 700–790 MHz and 885–960 MHz bands is presented. The insertion loss and isolation between two bands can be controlled by L-shaped branch independently. Impedance matching can be further improved by the influence of fan-shaped patch. The power combiner's insertion loss is lower than 0.4 dB and the return loss is lower than −15 dB (VSWR<1.5) in the passband. The port isolation level is better than 15 dB across the desired bands.