Patent Number: 6,311,044

Title: Method and apparatus for determining failure modes of a transceiver

Abstract: A method for determining failure modes of a transceiver (100) includes applying a control signal (121) to a transmitter (130) of transceiver (100). The power level of a transmit signal (131) is proportional to a predetermined voltage level of control signal (121), and is detected by a detector (132) which correspondingly produces a transmit power level indicator (133). A portion of transmit signal (131) is coupled to produce a coupled transmit signal (111) which is received by a receiver (110) of transceiver (100). Receiver (111) produces a receive signal strength indicator (112) corresponding to the power level of coupled transmit signal (111). Voltage levels of received signal strength indicator (112), transmit power level indicator (133) and predetermined voltage level of control signal (121) are stored in a memory means 125, and compared in a controller 126 to determine failure modes of receiver (110) and transmitter (130).

Inventors: Wilde; David (Cary, IL), Kelley; John (Palatine, IL)

Assignee: Motorola, Inc.

International Classification: H04B 17/00 (20060101); H04B 001/38 (); G01R 031/28 ()

Expiration Date: 10/30/2018