Very small PCB active antenna 210 mm high

Macha

New Member
#1
Hi,

This is my very small active PCB antenna, designed for 1090 MHz.
It's 210 mm high antenna, and it can support up to 40m of RG-58 coax cable without any signal losses.

PCB active.JPG active PCB antenna.JPG

Here is a screenshot of SDR dongle and RTL1090,
Antenna integrate on the PCB two PSA4-5043+ MMIC and a 30 MHz BW SAW filter, and is through coax cable, powered by the USB port 5v via a small bias-tee
There are 50m standard coax cable run from antenna to SDR dongle (13 dB losses).
More than 200 nautic miles on south direction (50 nautical mile between circle)

SDR Dongle  and RTL1090 and VRS_1.gif
73,
Francois
 
#5

Hi,

It's your feeling.

WIMO antenna GP1090 + amplifier+bias-Tee = 250,00 Euros (60MHz Bandwidth)
SBS3 Base antenna kit from Taylor Made RF limited = 300,00 euros
DPD antenna alone in the states = 120,00 euros then add shipping cost and amplifier with bias-tee cost (+/- 120,00 euros)
Minicircuit LNA from SSE (900 MHz BW) 100,00 euros then add antenna and waterproof amplifier housing....
 
#6
Antenna from Slovakia 20€...
Does anyone make a comparison?
The key point are the Area around the Antenna. In my case some Friend live in the City and the smal Magnetic Antenna are enough.
 
#7
Antenna from Slovakia 20€...
Does anyone make a comparison?
The key point are the Area around the Antenna. In my case some Friend live in the City and the smal Magnetic Antenna are enough.
1 You can't compare an active antenna with a standard passive antenna. You will received nothing with this passive antenna and 30 meters of standard coax cable..... :)
2 An active antenna is designed to be used, and only to be used, when you have a long run coaxial cable and no low loss cable (hard-line or such). The active antenna can support without signal degradation up to 40 meters of standard RG-58 coax cable, or up to 100 meters of Satellite TV cable RG-6 - we don't mind the 50/75 ohms mismatch-).
3 Choice of antenna is dependant of the antenna location (height above ground), lenght of coax cable between antenna and receiver, horizon clearance from the antenna .....
4 If your antenna is indoor, with a short coax cable, it is a non-sense to put money in an active antenna.

Each situation has it's own solution.
 
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