SPURE

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SPURESpurious Emission
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References in periodicals archive ?
* Scans the measurement receiver over the test-frequency range to locate harmonics and spurious emissions. Measures and compares to the limit.
The continuing evolution of MIL-STD-461: Version F
The devices are optimized to minimize spurious emissions in the cellular phone bands and to not be blocked by co-located cellular transmitters.
CSR launches UniFi single-chip embedded ICs for Wi-Fi
With the ability to perform modulation analysis, and measure code domain power, transmit power, adjacent channel power, occupied bandwidth and spurious emissions, the unit is designed for measuring basestations and mobile and basestation amplifiers at both the research and development and production stages.
3GPP Solution
Preamplification may not be needed; but if it is used, precautions should be taken to avoid signal overload and the consequent limiting and spurious emissions. As with all other measurements, the EUT must be rotated and the antenna raised and lowered to maximize the reading.
Testing UWB, Part 2: learn more about UWB testing procedures and the latest developments issued by ruling bodies from around the world
The model FSP13 is capable of testing the spurious emissions (between 9 kHz and 12.75 GHz) stipulated in the GSM specification, and an innovative firmware allows adjacent-channel power (ACP) measurement to W-CDMA/3GPP.
Spectrum Analyzers
Identification of spurious emissions levels can be more difficult if the test site is exposed to ambient fields although there are few other transmitters operating in UWB bands so far.
Testing Ultrawideband Part 1: learn more about what's involved in testing UWB devices to the applicable regulations
Next comes measuring the spurious emissions from the DUT, which requires looking at leakage into adjacent channels, such as adjacent channel power ratio (ACPR).
Then out-of-band spurious emissions tests check for signal leakage into frequency bands above and below 2.4 GHz, such as leakage out of the industrial scientific medical (ISM) band.
Driving down the cost of test for Bluetooth chipsets. (Bluetooth Test)
Operating frequency 2.6 to 10.2 (MHz) RF input/output 10 level (dBm) Phase control (bits) 8 binary Phase range ([degrees]) 0 to 360 Phase linearity ([degrees]) [less than] 2 error Differential accuracy ([degrees]) [+ or -] 0.5 Harmonic distortion (dBc) [less than] - 40 Spurious emissions (dBc) [less than] - 90 The I and Q modulators take the DC control signals from the I and Q channels and the RF input signals and create output signals, which are modified in phase and amplitude.
PROM compensated, digitally controlled vector modulators
Similar to spurious emissions, spectral purity has to do with the quality of the spectrum in the allocated channel and adjacent channels.
Testing on the EDGE Part II: There's no stopping progress. Be ready for the next generation of wireless technology by learning the basics of how to test GPRS and EDGE systems. (Wireless Test)
Selecting and performing the five main measurements, including modulation analysis, RF power, occupied bandwidth, adjacent channel power and spurious emissions, can be selected by pressing a single key.
A digital mobile radio transmitter tester
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