spurious radiation

spurious radiation

[′spyu̇r·ē·əs ‚rād·ē′ā·shən]
(electromagnetism)
Any emission from a radio transmitter at frequencies outside its frequency band. Also known as spurious emission.
References in periodicals archive ?
As a condition of the NASA CRS contract, SpaceX analyzed the orbital radiation environment on all Dragon systems, and how the spacecraft would respond to spurious radiation events.
But this kind of antenna structure usually suffered the spurious radiation from the feed lines, which degraded the pattern performances, such as raising the side lobe level [11, 12], or causing distortion of the main beam shape in some shaped-beam pattern designs [13].
8 mm for tightly coupled fields that produce less spurious radiation.
The active integrated antenna, which integrates active devices directly into the antenna platform, is prospective in communication systems for its simplification of the circuitry and downsizing of the transmission system [1], but this configuration easily generates spurious radiation at harmonic frequencies due to the inherent features of oscillation circuit.
However, in this operating configuration, the spurious radiation emitted by the opposite mold side may affect the measurement of thin-polymer streams.
Feeding by a coaxial probe has the advantages of ease in impedance matching and low spurious radiation, and the disadvantage of having to be physically connected to the center of the patch.
Mitsubishi Electric's newly developed models, the RA01L8693MA and RA01L9595M, are the industry's first amplifiers for RFID reader/writers with a built-in impedance-matched circuit for both input and output, which can also reduce spurious radiation.
Foreasy fabrication and spurious radiation the coaxial feed technique is chosen.
Possible contributing factors to the inconsistencies include alignment issues, non-symmetrical anechoic chamber, as well as spurious radiation from the coaxial cable.
Moreover, the polarization direction of the spurious radiation from the stub and the co-polarization of the patch are cross.
The design is therefore based on the required power split for each patch, the maximum realizable impedance values for the microstrip lines to reduce spurious radiation and coupling by the feed network, and to obtain a match a t the feed point.
Feed lines are rather long, adding to loss mechanisms, and spurious radiation is caused at bends and junctions.