Root-Locus Algorithms
Two algorithms for use on programable pocket calculators allow plotting of individual points on root-locus diagram with or without time delay.
Wechsler, E. R.↗
Engineering topics
Wechsler, E. R.
Publications and source records attributed to Wechsler, E. R..
Rounding Technique for High-Speed Digital Signal Processing
Arithmetic technique facilitates high-speed rounding of 2's complement binary data. Conventional rounding of 2's complement numbers presents problems in high-speed digital circuits. Proposed technique consists of truncating K + 1 bits then attaching bit in least significant position. Mean output error is zero, eliminating introducing voltage offset at input.
Wechsler, E. R.↗
Root Locus Algorithms for Programmable Pocket Calculators
Two algorithms are described which allow the plotting of individual points on a root locus diagram with or without time delay. The development was performed during the design of a continuous phase shifter used in the Baseband Antenna Combiner for the Deep Space Network (DSN). The algorithms, which are expected to be useful in similar DSN efforts, are simple enough to be implemented on a programmable pocket calculator. The coordinates of the open-loop zeros and poles, the gain constant K, and the time delay T are the data inputs.
Wechsler, E. R.↗
High speed front end of the multimegabit telemetry demodulator detector
The high speed front end (HSFE) portion of the Multimegabit Telemetry Demodulator-Detector is discussed. The HSFE accepts in-phase and quadrature analog signals from the input signal conditioner. It samples them with analog-to-digital converters at maximum rate of 64 megasamples per second. The samples are processed digitally and the integrals of I, Q, and of their crossproduct over one symbol period are supplied at symbol rate to the rest of the system.
Wechsler, E. R.↗