Patent ID: 7653356
Filing Date: 2010-01-26
Classification: H04B

Abstract:
1. A method of operating a wireless communication device including a plurality of active circuits comprising: operating the device in a normal mode wherein a first switch in a sensing circuit of a particular active circuit opens to decouple the sensing circuit from a test data line and wherein a second switch in an isolation buffer that couples the sensing circuit to the test data line closes to effectively short spurious radiations from the active circuit to ground, the opening of the first switch and closing of the second switch being in response to a control signal on a control bus that selects the particular active circuit from the plurality of active circuits; and operating the device in a test mode wherein the first switch closes to couple the sensing circuit to the isolation buffer and wherein the second switch opens to allow a test signal to pass from the sensing circuit through the isolation buffer to the test data line, the closing of the first switch and opening of the second switch being in response to the control signal on the control bus that selects the particular active circuit from the plurality of active circuits.