What principles does this antenna use?
1. Metal elements such as radiators
Tin can tabs (rings) are conductors. When connected with wires to a signal input point, they become radiating or receiving elements, like in a dipole antenna.
2. Radial arrangement
The design appears to use a radial or “beam” pattern with several plates, which increases the capture or emission by covering more directions (omnidirectionality).
3. Physical separation
The plastic acts as a dielectric insulator, preventing the metal elements from short-circuiting each other.
4. Terminal block connector
This suggests a signal distribution. It is possible that:
A conductor (e.g., coaxial cable) carries the signal to one or more metal plates.
The other pole is connected to other plates or even to the metal hook (as a ground plane or counterweight).
📡 Does it work as an antenna?
Yes, and here’s why:
The plates are shaped like loops or metal plates: this gives them the ability to interact with electromagnetic waves.
The cables distribute the signal to these elements.
Because they are elevated and separated from the conducting body (as in a radial antenna), they can emit or receive signals in multiple directions.
🔌 What type of signal does it support?
This antenna is probably designed for signals from:
FM Radio (88–108 MHz): where elements of ~75 cm can be used.
UHF/VHF TV: although it would need greater precision in design.
WiFi 2.4 GHz or 5 GHz: but in that case, the elements should be much smaller (6–12 cm), so this design seems more geared towards lower frequencies.
✅ Advantages
Recycled materials.
Economical design.
Omnidirectional, ideal for ambient reception of weak signals.
Suitable for experimentation and learning.
❌ Limitations
It is difficult to know the resonant frequency precisely.
Low gain compared to commercial antennas.
Susceptible to interference if not properly insulated or connected.
It is not suitable for transmitting high-power signals without impedance matching.
🛠️ How to improve it?
Measure and adjust the length of each sheet according to the desired frequency.
Use a coaxial cable properly connected to the center and ground.
Add a metal reflector behind the container to direct the signal.
Protect the connections with insulating or heat-shrink tape.
