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In traditional short-haul microwave transmission (that is, line-of-sight microwave transmissions operating in the 18 GHz and 23 GHz radio bands),RF design engineers typically are concerned with signal aspects such as fade margins, signal reflections, multipath signals, and so forth. Like an accountant seeking to balance a financial spreadsheet, an RF design engineer normally creates an RF budget table, expressed in decibels (dB), in order to establish a wireless design. Aspects like transmit power and antenna gain are registered in the assets (or plus) column, and free space attenuation, antenna alignment, and atmospheric losses are noted in the liabilities (or minus) column. The goal is to achieve a positive net signal strength adequate to support the wireless path(s) called for in the design.

A shielded transformer is a two-winding transformer, usually delta"star connected and serves the following purposes: Voltage transformation from the distribution voltage to the equipment's utilization voltage. Converting a 3-wire input power to a 4-wire output thereby deriving a separate stable neutral for the power supply wiring going to sensitive equipment. Keeping third and its multiple harmonics away from sensitive equipment by allowing their free circulation in the delta winding. Softening of high-frequency noise from the input side by the natural inductance

Avnet Electronics Marketing and Xilinx Inc. said they have concluded their five-month, 37-city global X-fest technical seminar series. According to the companies, the free one-day training sessions offered practical, how-to system level design instruction featuring the Spartan-6 and Virtex-6 FPGA families from Xilinx, as well as key enabling technologies from suppliers including Cypress Semiconductor, Intel, Maxim Integrated Products, National Semiconductor, NXP, Texas Instruments and Tyco Electronics. Replays of the events are available online.