MICROLAB's CC-xx series of directional couplers is a tapered stripline design covering from 575 – 2,700 MHz. Units couple off a defined fraction of signal with minimal reflections or loss. Availability in a wide range of coupling values makes this series useful in optimizing the power distribution required in passive in-building DAS. The extremely wide frequency range allows use with multiband antennas, leaky cable systems, and wireless base stations. With minimal solder joints and a low-loss dielectric, the dissipative loss has been minimized and reliability enhanced. Microlab’s product line for harsh outdoor applications have been designed to protect against corrosive salt fog environments. These products combine state of the art protective coatings, double moisture seals, and limits the use of dissimilar metals to produce a robust outdoor RF component. These products are also adapted with modified four-hole flanges. The CC-13E is a 13 dB coupler with 4.3-10 Female terminations and a minimum PIM rating of -155 dBc (-161 dBc typical).