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.
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)
73,
Francois
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.


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)

73,
Francois