Characteristics
R&S
®
HL300
5
Manual 4097.3328.02 ─ 01
1 Characteristics
1.1 Use
The handheld log-periodic antenna R&S
HL300 in conjunction with portable spectrum
analyzers (for example the R&S
FSH4/8) is used to determine RF parameters and local-
ize potential interfering sources. The direction of signal sources is found by pointing the
antenna towards the direction of maximum signal voltage.
Fig. 1-1: R&S
HL300 antenna overview.
1 = GPS/electronic compass unit
2 = toggle switch
3 = antenna handle
4 = log-periodic dipole array
The overall frequency range from 450
MHz to 8
GHz is covered by a log-periodic dipole
array antenna structure with a distinct directional pattern. The antenna does not have to
be tuned within its frequency range.
A built-in GPS receiver with an integrated patch antenna and an electronic compass
provide position and bearing data for further processing in the connected spectrum ana-
lyzer. A toggle switch at the antenna handle activates or bypasses the LNA (Low Noise
Amplifier) inside the R&S
FSH4/8, thus allowing the use of the system in the vicinity of
strong transmitters.
The R&S
HL300 is characterized by the following features:
●
Unambiguous direction finding, i.e. distinct directional pattern with the receive maxi-
mum pointing to the front in the frequency range from 450
MHz to 8
GHz.
Use