CST – Computer Simulation Technology

Broadband Sounding Rocket Antenna for DualBand Telemetric and Payload Data Transmission
Jérémie Prades, Anthony Ghiotto, Eric Kerhervé, Ke Wu,
1st January 0001
pp 1- 4
Bi-conical antenna, broadband antenna, diplexer, sounding rocket antenna, telemetry
This paper presents and investigates a broadband sounding rocket antenna developed for dual-band data transmission of telemetric and payload systems. This singleelement antenna permits the use of both the well-established 869.4-869.65 MHz and 2.4-2.4835 GHz frequency bands available in Europe to implement a redundant transmission of telemetric and tracking data desired for reliability. Furthermore, the available spectrum in the upper band offers a high-speed wireless link for transmitting payload data. To preserve the mechanical integrity and aerodynamics of rocket, the antenna is integrated in its nose cone. The proposed low-cost and low-weight structure is based on PCB (Printed Circuit Board) pieces assembled in a LEGO-like manner to form a broadband 3-Dimentional (3-D) biconical antenna, which is fed by a diplexer integrated in its base. A prototype has been fabricated, and validated using a reducedlength fuselage in a near-field measurement system.

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