204 via an attenuator 202 and an on off switch 208 note that attenuator 202 prevents damages to or saturation of the rx of rf ic chip 204 that may be caused by the high power input while transceiver 200 is in the normal operation mode switch 208 remains open and the tx and rx portions of transceiver 200 perform normal transmitting and receiving in one embodiment rf ic chip 204 includes wideband modulators demodulators a wideband pre amplifier and tunable lpfs in other words rf ic chip 204 is capable of working at various frequency bands in a further embodiment pa 206 includes a set of pas each optimized for a particular frequency band depending on the current standard one of the pas is selected for amplification similarly bpf 216 can be programmable to enable the transceiver 200 to receive rf signals over a wide range of frequency bands while transceiver 200 is in the linearity compensation mode before the initial use of transceiver 200 is triggered by the detection of environmental change switch 208 is closed and a closed loop is formed which includes the tx portion of rf ic chip 204 pa 206 attenuator 202 the rx portion of rf ic.