⚡ 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.