Robusta GNSS Antenna Part No. SR4G031 1. REFLECTOR Product Specification Features 2. REFLECTOR Technology Antenna for GNSS applications GPS, GLONASS, Beidou and Galileo Maintains high performance within device: DFI (Designed For Integration) 1.13mm diameter RF cable with IPEX MHF connector Self-Adhesive mounted Quick integration minimizes design cycle High performance Available in 2 standard cable lengths Description The Robusta antenna is intended for use with all positioning applications. It is a rigid antenna with a cable that enables direct connection to the host device (Plastic/Metal/PCB). This antenna can be placed against any material and will not detune. It is designed for simple integration with plug and play simplicity. This product specification shows the performance of the antenna covering the frequency range: 1559 - 1609 MHz. 3. Applications Trackers Portable Devices Drones Wearable devices Patent pending Antennas for Wireless Applications Product Specification Robusta - SR4G031-PS-1.2 Page 1 Robusta Part No. SR4G031 4. Part Number Robusta: SR4G031-xxx Note. -xxx refers to cable length option: 5. Part Number Cable Length SR4G031-100 100mm SR4G031-150 150mm General Data Product name Part Number Frequency Polarization Operating temperature Environmental condition test Impedance with matching Weight Antenna Assembly type Dimensions (Antenna) Cable length Connection Robusta SR4G031 1559 - 1609 MHz Linear -40C to +85C ISO 16750-4 5.1.1.1 / 5.1.2.1 / 5.3.2 50 < 0.5 g FR4 Self-adhesive (3M 468MP) 23.0 x 16.0 x 1.6 (mm) 100 / 150 (mm) MHF IPEX Antennas for Wireless Applications Product Specification Robusta SR4G031-PS-1.2 Page 2 Robusta Part No. SR4G031 6. RF Characteristics The RF characteristics are shown with the antenna placed in three scenarios: 1) Placed on a metal surface (RF GND Plane) 2) In free space 3) Placed on a metal surface (Floating unconnected copper) Metal (RF GND) 1559-1609MHz Free space Metal (Floating) Peak gain 3.80dBi 2.45dBi 3.60dBi Average gain -3.00dBi -2.45dBi -3.00dBi >50% >55% >50% <-11.0dB <-13.0dB <-13.0dB 1.70:1 1.60 0:1 1.55:1 Average efficiency Maximum return loss Maximum VSWR Antennas for Wireless Applications Product Specification Robusta SR4G031-PS-1.2 Page 3 Robusta Part No. SR4G031 7. RF Performance 7.1 Return Loss 7.2 VSWR Antennas for Wireless Applications Product Specification Robusta SR4G031-PS-1.2 Page 4 Robusta Part No. SR4G031 7.3 Antenna Pattern Free Space 7.3.1 1559 MHz - 1609 MHz 3D pattern at 1575.4 MHz Drag to rotate pattern and PCB by using Adobe Reader (Click to Activate) Antennas for Wireless Applications Product Specification Robusta SR4G031-PS-1.2 Page 5 Robusta Part No. SR4G031 8. Antenna Dimensions 8.1 Dimensions Antenna section 2 Holes = 1mm o (diameter) L W T Length Width Thickness 23.0 0.2 (mm) 16.0 0.2 (mm) 1.6 (mm) nominal All dimensions in mm 8.2 Dimensions assembled SR4G031-100 SR4G031-150 L L 108 2.0 (mm) 158 2.0 (mm) Antennas for Wireless Applications Product Specification Robusta SR4G031-PS-1.2 Page 6 Robusta Part No. SR4G031 8.3 IPEX Connector I-PEX Material Copper Alloy Plating Ag 8.4 O-Ring Spacer d1 d2 1.02 0.1 1.78 0.08 All dimensions in mm Antennas for Wireless Applications Product Specification Robusta SR4G031-PS-1.2 Page 7 Robusta Part No. SR4G031 8.5 Assembly Antenna Section 1.13mm o Cable I-PEX Connector O-ring Cable Spacers Antennas for Wireless Applications Product Specification Robusta SR4G031-PS-1.2 Page 8 Robusta Part No. SR4G031 9. Electrical Interface 9.1 Host Interface The host PCB requires the mating connector which is the IPEX MHF (UFL) receptacle. The location should be close to the chip/modules pin for the RF. Any feed from this receptacle should be maintained at 50 impedance. 9.2 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 feed. A DC blocking capacitor should be placed in line to protect the RF front end. 10. Mechanical Adhesion The antenna uses 3M 468MP adhesive on the reverse side of the antenna section. It is designed for a one time fix to a clean smooth surface. Antenna section reverse side Antennas for Wireless Applications Product Specification Robusta SR4G031-PS-1.2 Page 9 Robusta Part No. SR4G031 11.0 Antenna Integration Guide 11.1 Applied Surface Material The antenna can be placed on any material and will radiate effectively in the direction away from the material. The performance will vary depending on the type of material or surface used. This antenna is intended for use internally within a device and this simply illustrates the versatility of the antenna. The material behind the antenna is not critical, which enables it to be used in close proximity in devices that are thin, and it can be placed on a variety of surfaces. Examples: Wall mounted devices. Mounting onto metal chassis (e.g. light switch chassis) Direct to host PCB Devices installed in places where the material is not defined or where it may be any of the above. Antennas for Wireless Applications Product Specification Robusta SR4G031-PS-1.2 Page 10 Robusta Part No. SR4G031 11.2 Placement When placing the antenna within a device, the host PCB size is not a factor as with PCB mounted antennas. However, the placement still needs to follow some basic rules, as any antenna is sensitive to its environment. The top side of the antenna must be clear of all obstructions that are electrically conductive. The location within the device should ideally be along any outer edge. The antenna can be in direct contact with any surface. If the antenna is placed on a PCB, it should be kept a minimum distance away from any other board mounted component. This distance can be defined by projecting a 5 angle from the bottom of the antenna as shown below. Antennas for Wireless Applications Product Specification Robusta SR4G031-PS-1.2 Page 11 Robusta Part No. SR4G031 11.3 Cable Routing The cable has three spacers for clearance and to prevent it from being in direct contact with any surface. The distance `d' is defined by the O-ring (d=1.78mm). Antennas for Wireless Applications Product Specification Robusta SR4G031-PS-1.2 Page 12 Robusta Part No. SR4G031 12. Hazardous Material Regulation Conformance The antenna has been tested to conform to RoHS requirements. A certificate of conformance is available from Antenova's website. 13. Packaging The antennas are stored in individual plastic (PE) bags. These are stored within a second bag of 100 pieces. Single antenna per bag 100 units per second bag (Labelled) 13.1 Optimal Storage Conditions Temperature -10C to 40C Humidity Less than 75% RH Shelf life 18 Months Storage place Away from corrosive gas and direct sunlight Antennas should be stored in unopened sealed manufacturer's plastic packaging. Packaging Antennas for Wireless Applications Product Specification Robusta SR4G031-PS-1.2 Page 13 Robusta Part No. SR4G031 13.2 Label Information Antennas for Wireless Applications Product Specification Robusta SR4G031-PS-1.2 Page 14 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 Robusta - SR4G031-PS-1.2 released Aug 2017, updated Mar 2019 Page 15