SPECIFICATION Part No. : CBD01.07.0100C Product Name : 2.4GHz Cable Dipole Antenna Feature : 2.4GHz Wi-Fi/ISM band Antenna Lightweight (1.47g) and Thin for UAV Applications Flexible for easy integration High Efficiency >70% 3dBi Peak Gain Omnidirectional Linear Polarization 100mm Ø1.37 Micro-Coaxial Cable with IPEX MHF1 (U.FL) Connector Cable and Connector Customizable RoHS Compliant SPE-16-8-002/A/SS Page 1 of 19 1. Introduction The CBD01 2.4GHz antenna is a micro coax cable dipole antenna with omnidirectional radiation pattern which has a high efficiency of over 70% at 2.4GHz. These attributes make it ideal for use on 2.4GHz UAV applications for FPV (First-Person View) and contribute to a more reliable link. The CBD01 antenna comes in a small form factor which is very lightweight and easy to attach. The standard product comes with 100mm low loss 1.37mm coaxial cable and IPEX MHFI (U.FL) connector. The cable routes conveniently directly out of the bottom of the antenna, reducing the volume the antenna takes up in the device to an absolute minimum compared to other designs. The cable dipole antenna is the ideal antenna solution for fitting into narrow spaces and still maintaining high performance. Due to the potential for detuning or nearby interference in a device environment, Taoglas recommends that you contact us at our regional sales office for integration support, testing, and optimization of the antenna in your device before going to production. Customized cable and connector versions available, subject to minimum order quantities. SPE-16-8-002/A/SS Page 2 of 19 2. Specification Table ELECTRICAL Operation Frequency (MHz) 2400-2500MHz Polarization Linear Impedance 50Ω Max VSWR 2:1 Max Return Loss (dB) <-10 Peak Gain (dBi) 3.24 Efficiency (%) 71.72% Average Gain (dBi) -1.45 Radiation Properties Omnidirectional Max Input Power 2W MECHANICAL Dimensions 57mm (Maximum diameter:4.7mm) Cable Type Ø1.37mm coaxial cable Cable Length 100mm Connector IPEX MHFHT Housing Material PE Heat Shrink Weight 1.47g ENVIRONMENTAL Operating Temperature -40°C to +85°C Storage Temperature -40°C to +85°C Relative Humidity 40% to 95% RoHs Compliant Yes * Tested in free space SPE-16-8-002/A/SS Page 3 of 19 3. Antenna Characteristics 3.1. Return Loss (Free Space) 3.2. Efficiency (Free Space) SPE-16-8-002/A/SS Page 4 of 19 3.3. Peak Gain (Free Space) 3.4. Average Gain (Free Space) SPE-16-8-002/A/SS Page 5 of 19 3.5. Testing Setup The antenna was measured in a CTIA certified ETS-Lindgren Anechoic Chamber. Y X Z SPE-16-8-002/A/SS Page 6 of 19 3.6. 3D Radiation Pattern 2400MHz 2450MHz 2500MHz SPE-16-8-002/A/SS Page 7 of 19 3.7. 2D Radiation Pattern XY Plane X Y XZ Plane Z X SPE-16-8-002/A/SS Page 8 of 19 YZ Plane Z Y SPE-16-8-002/A/SS Page 9 of 19 4. Drawing (Unit: mm) SPE-16-8-002/A/SS Page 10 of 19 5. Packaging SPE-16-8-002/A/SS Page 11 of 19 6. Installation 2.4GHz remote control receivers usually need two separate 2.4GHz receiver antennas for receive diversity. * 2.4GHz remote control receivers + 2.4GHz receiver antennas The user connects the two CBD.01 antennas to a 2.4GHz remote control receiver. The two antennas should be placed at 90 degrees to each other. They should be kept as straight as possible but also kept away from each other as much as possible. If not, effective range could be reduced. Our antennas should be placed at both sides of the 2.4G remote receiver. Then the best RF signal condition can be obtained at any flying attitude. The antennas must be kept 15mm away from metal materials. SPE-16-8-002/A/SS Page 12 of 19 Cable ties or adhesive can be used on the bottom of the filter jacket for the most reliable mounting solution. Ideally, the antenna is mounted close to the outer edge of the UAV device to allow it to radiate outwards and receive signals without obstruction from internal components in the device. In order to have best maximum antenna efficiency, it is suggested that the antenna is installed on plastic or fiberglass surfaces. Also it is important to keep the antennas away from the motor, ESC, and other electrical noise sources to reduce interference entering the receiver. SPE-16-8-002/A/SS Page 13 of 19 7. Application Note 7.1 2 Port Isolation The antennas should be spaced at least 80mm apart to have minimum coupling interference, showing a similar return loss as in free space. Testing results for MIMO applications as follows: Test Set up Port 2 Port 1 80mm Port 1 S11 SPE-16-8-002/A/SS Page 14 of 19 Port 2 S11 Two Ports Isolation SPE-16-8-002/A/SS Page 15 of 19 7.2 Ground Approximate Effects The Antenna needs to be at least 54mm away from a comparatively large metal surface to have similar return loss as in free space. In order to maintain good antenna performance, we suggest that a suitable distance to large metal planes are reserved. If the distance is smaller than 54mm, Taoglas can offer the fine tuning service to prepare custom antennas, subject to minimum order quantities. Test set up 54mm from Metal (Ground) SPE-16-8-002/A/SS Page 16 of 19 7.3 Bending Angle on Antenna Main Body Due to the dipole antenna structure, cable routing of the antenna itself does not have much effect on performance. In real life scenarios however, the antenna matching and efficiency may be changed through bending the main body. The test setup and results below show the antennas response to bending. Test Set up @45° SPE-16-8-002/A/SS Page 17 of 19 7.4 ABS Plastic Proximity to plastic enclosures will affect antenna resonance. The test setup and return loss in free space, on 2mm thick ABS plastic (a common plastic housing and material thickness), and also, in between two pieces of 2mm thick ABS plastic, are shown below. *Taoglas provides fine tuning service in order to get the best antenna performance in customer’s device. SPE-16-8-002/A/SS Page 18 of 19 Taoglas makes no warranties based on the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and product descriptions at any time without notice. Taoglas reserves all rights to this document and the information contained herein. Reproduction, use or disclosure to third parties without express permission is strictly prohibited. Copyright © Taoglas Ltd. SPE-16-8-002/A/SS Page 19 of 19