This technical report presents the development of a simple envelope, or group, delay filter whose magnitude response emulates allpass characteristics for relatively broad frequency passbands. Unlike traditional allpass delay networks, the filter presented herewith exploits no inductances and maintains a common ground between its input and output ports. The absence of circuit inductances simplif...

We present an extension of a procedure for self-testing of an FPGA that implements a user-defined function. This extension, intended to improve the detectability of FPGA delay faults, exploits the reconfigurability of FPGAs and is based on modifying the functions of LUTs in the section under test. A modification procedure replaces a user-defined function of each LUT with a specific function tha...