Background
A client from the United Kingdom required a low profile 380MHz ceiling antenna capable of operating within the frequency range of 380-520MHz with a gain no less than 2dBi. This antenna was intended for use in government buildings to establish a public safety and emergency communication network. Given the low frequency requirements, particularly for the 380MHz band, traditional antenna designs tend to be bulkier compared to those for higher frequency bands.
Challenges
The primary challenge was to design a 380MHz ceiling antenna that could meet the stringent low-frequency performance requirements without compromising on the physical dimensions. The design had to be discreet, fitting seamlessly into the interior of government buildings while providing the necessary gain for effective communication.
RF element's Solution
Our engineering team engaged in extensive discussions with the client to understand their specific needs and constraints:
Innovative Array Design: Recognizing the need for a low profile form factor, our engineers designed a unique aluminum array structure. This innovative design allowed the antenna to achieve a thickness of only 20mm, significantly thinner than conventional designs.
Gain Optimization: To ensure the antenna's gain exceeded the minimum requirement of 2dBi, our engineers maximized the size of the aluminum reflector within the constraints of the low profile design.
Compact Size with Performance: The final design achieved a form factor of φ280*20mm, striking a balance between a slim profile and the necessary performance for public safety communications.
Design and Development
The development process included:
Material Selection: The choice of aluminum for the array structure provided a lightweight yet robust solution that could be easily integrated into the ceiling infrastructure.
Performance Simulation: Extensive simulations were conducted to optimize the antenna's performance across the 380-520MHz frequency range, ensuring consistent gain and minimal signal loss.
Aesthetic Considerations: The design focused on a discreet appearance, ensuring that the antenna would not disrupt the interior aesthetics of the buildings where it would be installed.
Performance Testing and Iterations
Our engineers conducted rigorous testing to validate the antenna's performance. Multiple iterations were made to fine-tune the design, ensuring that the antenna met the client's requirements for gain and coverage.
Final Product
The final low profile 380MHz ceiling antenna was successfully developed, meeting the client's performance criteria and aesthetic preferences. The antenna's dimensions of φ280*20mm allowed for easy installation in various ceiling types without compromising on performance.
Please find the visual representation of our low profile ceiling antenna. Note that the image provided is of an initial version, intended for case analysis and educational purposes.
