Patent ID: 8803635

Claim:
A system of providing filter isolation comprising: a first filter configured to pass a first frequency range; a second filter configured to pass a second frequency range; and a circulator communicatively coupled to the first filter at a first port of the circulator and communicatively coupled to the second filter at a second port of the circulator, the circulator configured to: receive a first signal at a third port of the circulator and direct the first signal from the third port to the first port and away from the second port such that the circulator directs the first signal toward the first filter and away from the second filter; receive a second signal filtered by the second filter at the second port of the circulator and direct the second signal from the second port to the third port and away from the first port such that the circulator directs the second signal away from the first filter, and reduce a roll off requirement of one or more of the first filter and the second filter, the one or more of the first filter and the second filter having a roll off based on the reduced roll off requirement.