Abstract--A metamaterial based compact microstrip T-junction
power divider working at 10 GHz is proposed. The metamaterial
unit cell consists of microstrip gaps and via holes whose behavior
is equivalent to the combination of series capacitors and shunt
inductors respectively, that is, a dual TL (high-pass)
configuration. By adjusting the parameters of these structures,
the characteristics of the Metamaterial-medium can be set to
achieve a desired phase shift. To validate the design, a T-junction
power divider is fabricated and measured. A 70% reduction of
the length of the impedance transformer, without significant
performance degradation, has been achieved.