User's Manual

UM-B-045
DA14580 Range extender v.2 reference application
Company confidential
User manual
Revision 1.1
14-September-2015
CFR0012-00 Rev 1
45 of 60
© 2015 Dialog Semiconductor
Rx of QFN40 module
GND
VCC(+3V)
Power Supply
Cable
UART
cable
Tx of QFN40 module
V
USB cable to PC
Figure 40: Range Extender v.2 mounted on the interposer board for radiated measurements
The board was set to continuous transmission mode with a 100% duty cycle.
The measurements were conducted for the range of 30 to 1000MHz, 1 GHz to 3 GHz and from 3GHz
to 18 GHz according to FCC Part 15C and for the range of 30 to 1000 MHz and 1 to 12.75 GHz for
ETSI EN 300 328 1.8.1.
A board with Nominal RF Output Power equal to +9.3 dBm was used for this test.
The situation and orientation was varied to find the maximum radiated emission. It was also rotated
360º and the antenna height was varied from 1 to 4 meters to find the maximum radiated emission.
Measurements were made in both horizontal and vertical planes of polarization. All tests were
performed in a semi-anechoic chamber at a distance of 3 m for the frequency range 30 MHz-1000
MHz and at distance of 1m for the frequency ranges above 1 GHz.
5.3.2.3 Test results
The results of the radiated measurements are given on Figure 41 to Figure 53. All measured FCC
values comply with the emission limits specified in FCC 14.247/ Sub-clause (d). Additionally radiated
emissions limits which fall in restricted bands, as defined in FCC 15.205(a) also comply with the
radiated emissions limits specified in 15.209.
As far as ETSI transmitter unwanted emission in the spurious domain, they all comply to the limits
described in ETSI 300 328 1.8.1 paragraph 4.3.1.9.2.