antenna isolation is less than a threshold and the wlan radio is receiving then the transmission power of the bt radio may decrease fig2 depicts a system in accordance with an embodiment of the present invention the system may include wlan radio 200 and bt radio 220 as well as other elements such as a processor chipset and memory each not depicted in the case where mimo is supported the system is used to receive signals from a main antenna and to receive signals from an auxiliary antenna other devices not depicted can communicate with the system of fig2 using at least wlan wwan or bt wlan radio 200 may include analog front end fe 202 base band 204 and antenna 206 wlan radio 200 may be capable of transmitting and receiving in accordance with ieee 802 11x fe 202 is communicatively coupled to antenna 206 and provides signal filtering capabilities in one embodiment among other operations fe 202 includes the capability to adjust the passband of its filter in response to transmission of both bt and wlan signals for example fe 202 may include the logic to adjust filter passband in a manner described with regard to fig3 a and 3b among other operations baseband 204 identifies to bt radio 220 a larger operating bandwidth than wlan radio 200 actually uses for.