In the general case, however, the array factor and a single element's pattern are inseparable, because we have to consider the distortions of the antenna patterns
that stem from the DF components and DF environment.
58 dBm Antenna height 30 m Antenna gain 15 dBi Feeder loss 3 dB Base station (BS) ITU-R F.1336 with k=0.7 antenna pattern
Antenna downtilt 3[degrees] Receiver noise figure NF = 5 dB Cell size/radius 8 km Sectorization 3 sectors Antenna polarization [+ or -] 45[degrees] Reference sensitivity -101.5 dBm I/N -6 dB BS unwanted emission limits Table 188.8.131.52.1-3 of 3GPP for 10 MHz channel bandwidth TS 36.104 (V11.2.0) TABLE II.
Therefore it is important to provide a basis to the antenna pattern
angle definitions and aeronautical platform Euler angle definitions as in Figures 2 and 3, respectively.
Each antenna pattern
radiation lobe in a direction other than proper direction is called side lobe.
"The key to resolving both these challenges lies in the formation of the antenna pattern
by the printing method.
In the chamber, a two-axis positioner in the common area can be used to conduct 3-D antenna pattern
or RCS measurements.
The text is supplemented by an executable MATLAB program that can be used to determine the Doppler spectrum parameters for any antenna pattern
and any terrain backscattering.
The directivity is a parameter that quantifies the directional characteristics of the antenna pattern
. It is defined as the ratio of the antenna radiation intensity in a specific direction in space to the radiation intensity of an isotropic source, assuming equal radiated power.
The instrumentation used for anechoic chamber measurements is a system consisting of an Agilent/HP 8530 Microwave Receiver, 8530B Sweep Generator, 8714B S-Parameter Test Set, and a computer-controlled rotator for antenna pattern
measurements, designed at The University of Mississippi.
The antenna pattern
shows the antenna performance characteristics of spatial distribution of the electromagnetic field energy; the radiation characteristic of the antenna is always described by the pattern of field intensity power.
This gain change would not occur if the perfect dipole antenna pattern
had been preserved once the antenna was mounted.