dummy load


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dummy load

[′dəm·ē ‚lōd]
(electronics)
A dissipative device used at the end of a transmission line or waveguide to convert transmitted energy into heat, so that essentially no energy is radiated outward or reflected back to its source.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
With respect to the separation of the desired harmonic from the undesired harmonics, the circuit performance can be explained as the generator's drive signal with fundamental frequency |f.sub.i~ passing the LPF and entering the gate; all harmonic components leaving the gate pass the HPF and are absorbed in the dummy load; the third harmonic (frequency 3|f.sub.i~) leaves the MESFET drain, passes |BPF.sub.1~ and constitutes the output signal; the fundamental frequency and other, undesired harmonics leave the drain pass |BPF.sub.2~ and are absorbed in the dummy load.
The Air Force contract and the $4 million dollar Navy deal, which will produce Dummy Load Units for Navy aircraft, give Henderson a base from which it can award subcontracts to smaller, local firms.
At the output of each power source is a 3-port circulator with dummy load which serves to protect the magnetron in the power source from the life-reducing effects of reflected power.
In some applications the backup is kept in transmit mode with the output of the HPA into a three-kilowatt dummy load. This method allows for hot-standby switching if both HPAs are tuned to the same frequency.
Belgian police working with their UK counterparts alerted Customs and the drugs were secretly swopped for a dummy load.