SR4L002

DATASHEET Lucida SR4L002 • lamiiANT® Features • • • • • • • • Antenna for LTE applications including MIMO systems LTE 700, GSM850, GSM900, DCS1800, PCS1900, WCDMA2100 LTE B7 (2500-2690 MHz), LTE B40 (2300–2400 MHZ) High performance antenna using DFI (Designed for Integration) Small clearance area while maintaining high efficiency Innovative design with low profile SMD mounting Supplied on Tape and Reel a n t e n ova.com DATASHEET: LUCIDA SR4L002-PS-3.02 Contents 1. Description 2 2. Applications 2 3. General data 2 4. Part number 3 5. RF characteristics 3 6. RF performance 4 6 . 1. Return loss 4 6 . 2. VSWR4 6 . 3. Efficiency 5 6 . 4. Antenna pattern 6 6 . 5. Optimising antenna efficiency 11 7. Antenna dimensions 12 8. Schematic symbol and pin definition 13 9. Host PCB footprint 13 10. Electrical interface 14 1 0 .1. Transmission line 14 1 0 .2. Matching circuit 14 11. Antenna integration guide 15 1 1 .1. Antenna placement 15 1 1 .2. Host PCB layout 16 1 1 .3. Host PCB clearance 16 1 1 .4. Diversity 16 12. Reference board 1 2 .1. Reference board matching circuit 17 17 13. Soldering 18 14. Hazardous material regulation conformance 18 15. Packaging 18 1 5 .1. Optimal storage conditions 18 1 5 .2. Tape characteristics 19 1 5 .3. Reel dimensions 20 1 5 .4. Box dimensions 20 1 5 .5. Bag properties 21 1 5 .6. Reel label information 21 a n t e n ova.com 1 DATASHEET: LUCIDA 1. SR4L002-PS-3.02 Description A compact low profile antenna for all 4G/LTE applications, including MIMO systems. The novel design of the antenna reduces susceptibility to detuning. 2. • • • • • • • 3. Applications G MiFi routers 4 Pico base stations Portable devices Telematics devices OBDII & Automotive devices Network devices Wearable devices General data FREQUEN CY 698-824MHz 824-960MHz 1710-2170MHz 2300-2400MHz 2500-2690MHz POLARIZA TION Linear OPERATING TEM PERATURE -40°C to 140°C E N V I RONMENTAL CO NDITION TEST ISO16750-4 5.1.1.1/5.1.2.1/5.3.2 I MPEDANCE WITH MATCHING 50 Ω WEIGHT 45% >60% >65% MAXIMUM RETURN LOSS -6.0dB -6.0dB -6.0dB MAXIMUM VSWR 3.2:1 2.8:1 3.1:1 2300-2 4 0 0 M H Z 2500-2690MHZ PEAK GAIN 1.6dBi 2.5dBi AVERAGE GAIN (LINEAR) -2.0dBi -2.0dBi AVERAGE EFFICIENCY >50% >50% MAXIMUM RETURN LOSS -10.0dB -5.0dB MAXIMUM VSWR 1.7:1 3.4:1 All data measured on Antenova’s evaluation PCB Part No. SR4L002-EVB-1 a n t e n ova.com 3 DATASHEET: LUCIDA 6. SR4L002-PS-3.02 RF performance 6.1. Return loss 6.2. VSWR a n t e n ova.com 4 DATASHEET: LUCIDA 6.3. SR4L002-PS-3.02 Efficiency a n t e n ova.com 5 DATASHEET: LUCIDA 6.4. SR4L002-PS-3.02 Antenna pattern 6.4.1. 698 MHz – 824 MHz 3D pattern at 734MHz a n t e n ova.com 6 DATASHEET: LUCIDA 6.4.2. SR4L002-PS-3.02 824 MHz – 960 MHz 3D pattern at 900MHz a n t e n ova.com 7 DATASHEET: LUCIDA 6.4.3. SR4L002-PS-3.02 1710 MHz – 2170 MHz 3D pattern at 1930MHz a n t e n ova.com 8 DATASHEET: LUCIDA 6.4.4. SR4L002-PS-3.02 2300 MHz – 2400 MHz 3D pattern at 2340MHz a n t e n ova.com 9 DATASHEET: LUCIDA 6.4.5. SR4L002-PS-3.02 2500 MHz – 2690 MHz 3D pattern at 2600MHz a n t e n ova.com 10 DATASHEET: LUCIDA 6.5. SR4L002-PS-3.02 Optimising antenna efficiency All SMD cellular antennas require a ground plane on the host PCB for best radiation efficiency, especially in the sub-GHz bands. On an ideal PCB the antenna needs the ground plane length to be greater than a quarter wavelength of the lowest frequency used. If the ground plane is less than this, the efficiency will be reduced. E.g. to calculate the wavelength of 698MHz: λ = = = 430mm ¼ λ=107mm In practise, the optimum PCB length will be slightly greater than ¼ wavelength + antenna + clearance area, for Lucida that optimum PCB length is 125mm. a n t e n ova.com 11 DATASHEET: LUCIDA 7. SR4L002-PS-3.02 Antenna dimensions Top view L W H Length Width Height 35.0 ±0.1 8.5 ±0.1 3.3 ±0.1 All dimensions in (mm) 2.0 1.0 2.3 2.3 Bottom view 2.3 6.7 a n t e n ova.com 7.0 5.0 12 DATASHEET: LUCIDA 8. SR4L002-PS-3.02 Schematic symbol and pin definition The circuit symbol for the antenna is shown below. The antenna has 16 pins with only 2 as functional. All other pins are for mechanical strength. P IN DESCRIPTION 3 Feed (Transceiver port) 4 Return/GND Lucida 1, 2, 5, 6, 7, 8, 9, 10, 11, 12, NC (Not used, mechanical only) 13, 14, 15, 16 9. Host PCB footprint The recommended host PCB footprint is below. Pads 1-16 = 2.0 x 1.0 (mm) a n t e n ova.com 13 DATASHEET: LUCIDA 10. 10.1. SR4L002-PS-3.02 Electrical interface Transmission line All transmission lines should be designed to have a characteristic impedance of 50Ω. • The length of each transmission lines should be kept to a minimum • All other parts of the RF system like transceivers, power amplifiers, etc, should also be designed to have a 50 Ω impedance A co-planar transmission line can be designed using an online transmission line calculator tool, such as: https://blog.antenova.com/rf-transmission-line-calculator The PCB thickness, copper thickness and substrate dielectric constant are entered, then the tool calculates the transmission line width and gaps on either side of the track to give a 50 Ω impedance. 10.2. Matching circuit The antenna requires a matching circuit that must be optimized for each product. The matching circuit will require up to six 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 should be placed close to the antenna feed to ensure it is optionally effective in tuning the antenna. a n t e n ova.com Lucida 14 DATASHEET: LUCIDA 11. SR4L002-PS-3.02 Antenna integration guide We recommend the following during the design phase to maximise antenna performance and minimize noise: • • • • Minimum 4 layer PCB Route signals and power internally where possible Flood all layers with ground Knit ground on all layers together with plenty of vias Follow placement guidance carefully, in addition Antenova provide technical support to help you through all stages of your design. Register for an account on https://ask.antenova.com/ to access technical support. 11.1. Antenna placement The best position for the antenna is in the corner of the short side of the PCB. This allows the longer side of the PCB to be a ground plane, a long ground plane improves the antenna’s efficiency. The antenna requires clearance ideally in 5 spatial directions as shown below. Where this cannot be achieved you should keep as many clear as possible to a minimum of 3. Please note performance will degrade with fewer clearances. The Antenova placement tool can be used to advise on antenna placement, see: https://blog.antenova.com/intelligent-antenna-selection-and-placementtool-antenova Correct a n t e n ova.com Incorrect 15 DATASHEET: LUCIDA 11.2. SR4L002-PS-3.02 Host PCB layout The host PCB must be designed using the PCB footprint shown with the correct clearances. An example of the PCB layout shows the antenna footprint. Please note this clearance area is critical to the performance of the antenna and must be applied through all layers of the PCB. D=3.2mm All dimensions in (mm) 11.3. Host PCB clearance The diagram below shows the antenna footprint and clearance through all layers on the PCB. Only the antenna pads and connections to feed and GND are present within this clearance area. Placement of components and GND with traces adjacent to the antenna should maintain a minimum clearance of 15mm from either side. The antenna should therefore be placed in the corner to only have one side affected. Lucida 11.4. Diversity The Lucida antenna is suitable for use in diversity antennas. To implement a diversity antenna, follow the guidance given in the Diversity Antennas app note. This can be downloaded from Antenova.com. a n t e n ova.com 16 DATASHEET: LUCIDA SR4L002-PS-3.02 Reference board 12. A reference board is used for evaluating the antenna SR4L002 and it includes a SMA female connector. (Part number: SR4L002-EVB-1) 125mm To order a reference board please see antenova.com 40mm Front view 12.1. Back view Reference board matching circuit D E S IGNATOR TYPE VALUE DESCRIPTION L1, L3 Inductor 15nH Murata LQG15HN series L2 Inductor 3.3nH Murata LQG15HN series C1 Capacitor 2.2pF Murata GJM15 series C2 NA DNP Not Fitted C3 Capacitor 0.5pF Murata GJM15 series L1 L3 C1 C2 L2 C3 a n t e n ova.com 17 DATASHEET: LUCIDA SR4L002-PS-3.02 Soldering 13. 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: • For leaded soldering, the maximum temperature should not exceed 240 ºC. • For lead free soldering, a maximum temperature of 255 ºC for no more than 20 seconds is permitted. • The antenna should not be exposed to temperatures exceeding 120 ºC more than 3 times during the soldering process. Hazardous material regulation conformance 14. The antenna has been tested to conform to RoHS and REACH requirements. A certificate of conformance is available from Antenova’s website. Packaging 15. 15.1. Optimal storage conditions TEMPERATURE -10ºC to 40ºC HUMIDITY Less than 75% RH SHELF LIFE 24 Months STORAGE PLACE Away from corrosive gas and direct sunlight PACKAGING MSL LEVEL Reels should be stored in unopened sealed manufacturer’s plastic packaging. 1 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 conditions as described in the table above. The shelf life of the antenna is 2 years provided the factory seal on the package has not been broken. a n t e n ova.com 18 DATASHEET: LUCIDA 15.2. SR4L002-PS-3.02 Tape characteristics P0 P1 P2 D0 4.00 ± 0.1 12.00 ± 0.1 2.00 ± 0.1 1.50 ± 0.1 E F W 1.75 ± 0.1 26.20 ± 0.15 56.00 ± 0.3 All dimensions in (mm) QUANTITY LEADING SPACE TRAILING SPACE 1000 pcs / reel 30 blank antenna holders 30 blank antenna holders a n t e n ova.com 19 DATASHEET: LUCIDA 15.3. SR4L002-PS-3.02 Reel dimensions A C N W1 330.0 ± 2.0 13.0 ± 0.5 100.0 ± 0.5 56 ± 0.3 All dimensions in (mm) 15.4. Box dimensions W I DTH (W) BREADTH (B) HEIGHT ( H ) 350mm 355mm 70mm a n t e n ova.com 20 DATASHEET: LUCIDA 15.5. SR4L002-PS-3.02 Bag properties Reels are supplied in protective plastic packaging. 15.6. Reel label information Quality statements Antenova’s products conform to REACH and RoHS legislation. For our statements regarding these and other quality standards, please see antenova.com. Antenova reserves all rights to the contents of this document. Antenova gives no warranties based solely on the accuracy or completeness of the contents of this document and reserves the right to make changes to the specifications of the products described herein at any time and without notice. Datasheet version 3.01 released Aug 24th 2021 3.02 released Apr 21th 2022 a n t e n ova.com 21 DATASHEET: LUCIDA SR4L002-PS-3.02 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. We aim to support our customers to create high performance wireless products. You will find a wealth of design resources, calculators and case studies to aid your design on 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 the required certifications. If you cannot find the antenna you require in our product range, please contact us to discuss creating a custom antenna to meet your exact requirements. Share knowledge with RF experts around the world. Visit antenova.com ask.antenova is a global forum for designers and engineers working with wireless technology. Order antenna samples and evaluation boards, and read our antenna resources VISI T A S K . A N T E N O V A VISIT ANTENOVA.COM Request a volume quotation for antennas: Global headquarters sales@antenova.com Antenova Ltd, 2nd Floor Titan Court, 3 Bishop Square, Hatfield, AL10 9NA +44 (0) 1707 927589 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. a n t e n ova.com 22