In the Can Satellite (“CANVAS”), the wireless antenna—typically connected via an SMA connector—is one of the most critical components in determining the effectiveness of the satellite’s wireless transmission and reception capabilities.
This explanation is based on the communication module ESP8266 ESP-07S.
Roles of the Antenna in CanSat
Transmission of Wireless Signals
The antenna is used to transmit collected data from the CanSat to the ground station or other receiving devices.
It is connected to the communication module (e.g., ESP8266, LoRa, RF) and radiates outgoing signals into the air.Reception of Commands from Ground Station
The antenna also receives incoming signals from the ground station, allowing the satellite to accept commands or maintain communication status.Signal Strength Optimization
In wireless environments, signal quality can degrade due to distance, physical obstacles, or frequency interference.
Efficient antenna design and placement are crucial to maintaining a high success rate in CanSat communication.
SMA-type antennas help minimize signal loss and optimize radiation patterns for better overall performance.
Antenna Specifications Used in CanSat
Parameter | Description | Notes |
|---|---|---|
Frequency Band | 2.4 GHz (Wi-Fi, Bluetooth) or 433/915 MHz (LoRa, etc.) | Depends on communication module used |
Connector Type | SMA Male Connector | Standard interface for external antennas |
Compatible Modules | ESP8266, ESP32-CAM, LoRa SX1278, and others | Plug-and-play with most RF modules |
Radiation Pattern | Omnidirectional or directional, depending on application | Chosen based on range and coverage needs |
Use Cases of Communication Antenna in CanSat Experiments
Experiment Objective | Antenna Usage Description | Notes |
|---|---|---|
Real-Time Sensor Data Transmission | Sends live data such as temperature, GPS, and speed to the ground station | Ensures continuous monitoring |
Satellite Recovery Support | Transmits final signal after descent → aids in predicting landing location | Enhances recovery success rate |
Communication Performance Testing | Analyzes signal strength under varying conditions (altitude, rotation, obstacles) | Useful for range and interference studies |
Remote Control Operations | Receives commands from the ground station (e.g., trigger camera capture) | Enables bidirectional communication capability |
Conclusion
The communication antenna in a CanSat functions as a wireless bridge between the satellite and the ground station.
The quality of signal transmission and reception is directly influenced by the antenna’s performance and installation position, which in turn plays a crucial role in successful data acquisition and post-mission recovery.
