What causes spurious emissions?

Spurious emissions are caused by unwanted transmitter effects such as harmonic emissions, parasitic emissions, intermodulation products and frequency conversion products, but exclude out of band emissions. Spurious emissions are measured at the base station RF output port.

How can spurious emissions be reduced?

A spurious emission is anyRF not deliberately created or transmitted, especially in a device which normally does create other frequencies. To reduce spurious emissions, ensure that noisy or high-frequency switching components and their traces are kept away from an antenna.

What is out of band emissions?

Out-of-band emission. «1.144 out-of-band emission*: Emission on a frequency or frequencies immediately outside the necessary bandwidth which results from the modulation process, but excluding spurious emissions.»

What is considered spurious emission?

Spurious emissions are emissions which are caused by unwanted transmitter effects such as harmonics emission, parasitic emission, intermodulation products,3 and frequency conversion products, but exclude OOB emissions.

What are the out of band spurious emissions for Bluetooth?

According to the ETS 300-328 for EUT with a passive antenna, the con- ducted measurement for the out of band spurious emissions ranges from 30 MHz to 12.75 GHz. Radiated tests require signalling via a cable connection and a frequency sweep from 30 MHz to 12.75 GHz.

What is the definition of out of band emission?

1.144 Out-of-band emission: Emission on a frequency or frequencies immediately outside the necessary bandwidth which results from the modulation process, but excluding spurious emissions.

What does out of band spurious measurement mean?

Out of band spurious emissions are unwanted emissions immediately outside the channel bandwidth resulting from the modulation process and non-linearity in the transmitter. Out-of-Band Spurious Measurement 1MA53_4e 4 Rohde & Schwarz 2 Hardware and Software Requirements Hardware Requirements

What are unwanted emissions in the out of band domain?

**The limits in this Recommendation apply to any out-of-band (OoB) and spurious emissions in OoB domain. OoB emissions are generally predominant on the OoB domain. 2 Rec. ITU-R SM.1541-1 recognizing that the following terms are defined in the RR. Unwanted emissions(RR No. 1.146) Consist of spurious emissions and OoB emissions.