PMI Model No. QC-1G18G-4518 is a quadrature hybrid coupler that is optimized to operate over the frequency range of 4.5 GHz to 18.0 GHz. This model provides low loss of 2 dB and an isolation of 16 dB minimum. The VSWR is 1.6:1 maximum with an amplitude balance is ±0.9 dB maximum and the phase balance is ±8° maximum. This coupler is outfitted with N-type female connectors.