Rufa 2.4GHz SMD Antenna Part No. A5839H / A5887H 1. gigaNOVA (R) Product Specification Features 2. Designed for 2.4GHz applications: BT / BLE, Wi-Fi(R) (802.11a/b/g/n), ZigBee(R), etc. Easy to integrate Low profile design High efficiency Intended for SMD mounting Supplied in tape and reel Description Rufa is intended for use with all 2.4 GHz applications. The antenna uses a ground plane in order to radiate efficiently, but this ground plane must not extend underneath the antenna itself. The antenna is available in two versions with the feed locations on the right or left hand side of the antenna. 3. Applications Wearables Notebooks PC-cards Sensors Antennas for Wireless Applications Product Specification Rufa A5839H / A5887H PS-1.0 Page 1 Rufa Part No. A5839H / A5887H 4. Part Number Rufa Left: A5839H 5. Rufa Right: A5887H General Data Product name Rufa Part Number A5839 (Left) A5887 (Right) Frequency 2.4 - 2.5GHz Polarization Linear Operating temperature Environmental condition test -40C to140C ISO 16750-4.5.1.1.1/5.1.2.1/5.3.2 Impedance with matching 50 Weight 0.1 g Antenna type SMD Dimensions 12.8 x 3.9 x 1.1 (mm) 6. RF Characteristics 2.4 - 2.5 GHz Peak gain 2.1dBi Average gain (Linear) -1.2dBi Average efficiency 75% Maximum return loss -11dB Maximum VSWR 1.8:1 All data measured on Antenova's evaluation PCB Part No. A5839H-EVB-1 and A5887H-EVB-1 Antennas for Wireless Applications Product Specification Rufa A5839H / A5887H PS-1.0 Page 2 Rufa Part No. A5839H / A5887H 7. RF Performance 7.1 Return Loss 7.2 VSWR Antennas for Wireless Applications Product Specification Rufa A5839H / A5887H PS-1.0 Page 3 Rufa Part No. A5839H / A5887H 7.3 Antenna pattern 7.3.1 2400 MHz - 2500 MHz 3D pattern at 2450 MHz Drag to rotate pattern and PCB by using Adobe Reader (Click to Activate) Antennas for Wireless Applications Product Specification Rufa A5839H / A5887H PS-1.0 Page 4 Rufa Part No. A5839H / A5887H 8. Antenna Dimensions Rufa: A5839H / A5887H Top side Bottom Side 5 solder pads (2.0 x 1.0 mm) All Dimensions in (mm) Antennas for Wireless Applications Product Specification Rufa A5839H / A5887H PS-1.0 Page 5 Rufa Part No. A5839H / A5887H 9. Schematic symbol and Pin definition The circuit symbol for the antenna is shown below. The antenna has 5 pins with only two as functional. All other pins are for mechanical strength. Pin Description 2 Feed 3 GND 1,4,5 Not used (Mechanical only) 10. Antenna footprint The recommended host PCB footprint is below. Antennas for Wireless Applications Product Specification Rufa A5839H / A5887H PS-1.0 Page 6 Rufa Part No. A5839H / A5887H 11. Electrical Interface 11.1 Transmission Line All transmission lines should be designed to have a characteristic impedance of 50. * The length of the transmission lines should be kept to a minimum * Any other parts of the RF system like transceivers, power amplifiers, etc, should also be designed to have an impedance of 50 Once the material for the PCB has been chosen (PCB thickness and dielectric constant), a coplanar transmission line can easily be designed using any of the commercial software packages for transmission line design. For the chosen PCB thickness, copper thickness and substrate dielectric constant, the program will calculate the appropriate transmission line width and gaps on either side of the track, so the characteristic impedance of the co-planar transmission is 50 . 11.2 Matching Circuit The antenna requires a matching circuit that must be optimized for each product. The matching circuit will require up to three components and the following circuit should be designed into the host PCB. Not all components may be required but should be included as a precaution. The matching network must be placed close to the antenna feed to ensure it is more effective in tuning the antenna. Antennas for Wireless Applications Product Specification Rufa A5839H / A5887H PS-1.0 Page 7 Rufa Part No. A5839H / A5887H 12. Antenna Integration Guide 12.1 Antenna Placement Antenova M2M strongly recommends placing the antenna at the edge of the board. Maximum antenna performance is achieved by placing the antenna towards one of the corners of the PCB and with the feed point of the antenna as close to same corner of the PCB as possible. Additional ground and components near the antenna should be at a distance of at least 2mm. Where possible the antenna should be clear of ground from both sides, although the antenna can work well with a minimum clearance of D 2 mm as shown in the drawing above. Antennas for Wireless Applications Product Specification Rufa A5839H / A5887H PS-1.0 Page 8 Rufa Part No. A5839H / A5887H 13. Reference Board The reference board has been designed for evaluating A5839H / A5887H and includes a SMA female connector. A5389H / A5887H Evaluation Board To order a reference board please see www.antenova.com Antennas for Wireless Applications Product Specification Rufa A5839H / A5887H PS-1.0 Page 9 Rufa Part No. A5839H / A5887H 13.1 Reference Board Matching Circuit Designator Type Value Description L1 Inductor 15nH Murata LQG15HN series C1 Capacitor 2.2pF Murata GJM15 series C2 Capacitor Not fitted Not fitted Antennas for Wireless Applications Product Specification Rufa A5839H / A5887H PS-1.0 Page 10 Rufa Part No. A5839H / A5887H 14. Comparison S11 The A5839H/A5887H is a direct replacement for the A5839/A5887 original parts. The below is a comparison between each on the same evaluation PCB. 14.1 Return Loss A5839 A5839H 14.2 VSWR A5839 A5839H Antennas for Wireless Applications Product Specification Rufa A5839H / A5887H PS-1.0 Page 11 Rufa Part No. A5839H / A5887H 14.3 Pattern Comparison The A5839H/A5887H is a direct replacement for the A5839/A5887 original parts. The below is a comparison between each on the same evaluation PCB shown in a polar format. A5839H A5839 Antennas for Wireless Applications Product Specification Rufa A5839H / A5887H PS-1.0 Page 12 Rufa Part No. A5839H / A5887H 15. Soldering This antenna is suitable for lead free soldering. The reflow profile should be adjusted to suit the device, oven, and solder paste, while observing the following conditions: The maximum temperature should not exceed 240 C However, for lead free soldering, a maximum temperature of 255 C for no more than 20 seconds is permitted. The antenna should not be exposed to temperatures exceeding 120 C more than 3 times during the soldering process. 16. Hazardous Material Regulation Conformance The antenna has been tested to conform to RoHS requirements. A certificate of conformance is available from Antenova's website. 17. Packaging 17.1 Optimal Storage Conditions Temperature -10C to 40C Humidity Less than 75% RH Shelf life 24 Months Storage place Away from corrosive gas and direct sunlight Reels should be stored in unopened sealed manufacturer's plastic packaging. Packaging Note: Storage of open reels of antennas is not recommended due to possible oxidization of pads on antennas. If short term storage is necessary, then it is highly recommended that the bag containing the antenna reel is re-sealed and stored in like storage conditions as in above table. Antennas for Wireless Applications Product Specification Rufa A5839H / A5887H PS-1.0 Page 13 Rufa Part No. A5839H / A5887H 17.2 Tape Characteristics Rufa Left [Part Number: A5839H] 1000/5000 pcs/reel Antennas for Wireless Applications Product Specification Rufa A5839H / A5887H PS-1.0 Page 14 Rufa Part No. A5839H / A5887H Rufa Right [Part Number: A5887H] Antennas for Wireless Applications Product Specification Rufa A5839H / A5887H PS-1.0 Page 15 Rufa Part No. A5839H / A5887H 17.3 Reel Dimensions 1000pc Reel W 24 mm D 180 mm H C 60 mm 13mm 5000pc Reel W 24 mm D 330 mm H 80 mm C 13mm 17.4 Box Dimensions 17.5 Bag Properties Reels are supplied in protective plastic packaging. Antennas for Wireless Applications Product Specification Rufa A5839H / A5887H PS-1.0 Page 16 Rufa Part No. A5839H / A5887H 17.6 Reel Label Information Antennas for Wireless Applications Product Specification Rufa A5839H / A5887H PS-1.0 Page 17 Quality statements Antenova's products conform to REACH and RoHS legislation. For our statements regarding these and other quality standards, please see www.antenova.com. Antenna design, integration and test resources Product designers - the details contained in this datasheet will help you to complete your embedded antenna design. Please follow our technical advice carefully to obtain optimum antenna performance. It is our goal that every customer will create a high performing wireless product using Antenova's antennas. You will find a wealth of design resources, calculators and case studies to aid your design at our website. Antenova's design laboratories are equipped with the latest antenna design tools and test chambers. We provide antenna design, test and technical integration services to help you complete your design and obtain certifications. If you cannot find the antenna you require in our product range, please contact us to discuss creating a bespoke antenna to meet your requirement exactly. Contacts Join our online antenna design community: ask.antenova.com Order antenna samples and evaluation boards at: www.antenova.com Request a quotation for antennas by volume: sales@antenova.com Global Headquarters: Antenova Ltd, 2nd Floor Titan Court, 3 Bishop Square, Hatfield, AL10 9NA +44 (0) 1223 810600 (R) (R) (R) (R) Copyright Antenova Ltd. All Rights Reserved. Antenova , gigaNOVA , RADIONOVA , the Antenova product family names and the Antenova logos are trademarks and/or registered trademarks of Antenova Ltd. Any other names and/or trademarks belong to their respective companies. The materials provided herein are believed to be reliable and correct at the time of printing. Antenova does not warrant the accuracy or completeness of the information, text, graphics or other items contained within this information. Antenova further assumes no responsibility for the use of this information, and all such information shall be entirely at the user's risk. Antennas for Wireless Applications Product Specification Rufa A5839H / A5887H PS-1.0 released February 2019 Page 18