  We demonstrate a 3-port Josephson parametric circulator, matched to 50 Ohm
using second order Chebyshev networks. The device notably operates with two of
its signal ports at the same frequency and uses only two out-of-phase pumps at
a single frequency. As a consequence, when operated as an isolator it does not
require phase coherence between the pumps and the signal, thus simplifying the
requirements for its integration into standard dispersive qubit readout setups.
The device utilizes parametric couplers based on a balanced bridge of rf-SQUID
arrays, which offer purely parametric coupling and high dynamic range. We
characterize the device by measuring its full 3x3 S-matrix as a function of
frequency and the relative phase between the two pumps. We find up to 15 dB
nonreciprocity over a 200 MHz signal band, port match better than 10 dB, low
insertion loss of 0.6 dB, and saturation power exceeding -80 dBm.
