antenna

FCC ID: 2AAMI-T2030

Cover Letter(s)

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FCCID_4191771

"High Frequency Ceramic Solutions" 2.4 GHz Surface Mount, Above Metal, Low Profile Mini Chip Antenna P/N 2450AT42E0100 This antenna must have metal underneath in order to function properly Detail Specification: 10/17/2016 Page 1 of 9 General Specifications Part Number 2450AT42E0100 Frequency (MHz) 2400 - 2480 Peak Gain -2.0 dBi typ. (YZ-V) Impedance 50Ω Return Loss 5.6dB Typ. (4.5 dB min.) Antenna mounts Power Capacity 2W max. (CW) directly above or below the metal layer Q'ty/Reel (pcs) 2,000 pcs of PCB. No antenna Operating Temp -40 to +85°C clearance required Storage Temp -40 to +85°C ever again! Storage Period 18 months max. Total average radiated efficiency on PCB feature on "Mounting Considerations 1" ( orderable EVB p/n: 2450AT42E0100-EB1SMA) is ~30% This antenna was designed in mind for small coin cell, wearable, IoT, 2.4 BLE, 802.11, ISM, Zigbee, etc. applications in close-range networks where metal or a battery/display covers the entire length or side of the PCB or encasement must be present directly under the antenna and there's no room for usual/typical antenna metal clearance. This antenna is specifically designed for PCBs that have 0.5-1mm of total thickness Part Number Explanation Bulk Suffix = S e.g.. 2450AT42E0100S Packing Style P/N Suffix T&R Suffix = E e.g.. 2450AT42E0100E EVB p/n 2450AT42E0100-EB1SMA (comes with 1 female SMA connector) Mechanical Specifications Terminal Configuration In mm 1 Feeding Point L 0.197 ± 0.008 5.00 ± 0.20 2 NC1 W 0.079 ± 0.008 2.00 ± 0.20 W 3 GND T 0.059 ± 0.008 1.50 ± 0.20 4 GND a 0.020 ± 0.008 0.50 ± 0.20 c L b 0.059 ± 0.008 1.50 ± 0.20 C 0.012 max 0.30 max b b W T a L 1 Make sure to have Pin 2 soldered to its PCB land pad but not connected to GND or input, it must be NC (or floating). www.johansontechnology.com 4001 Calle Tecate • Camarillo, CA 93012 • TEL 805.389.1166 FAX 805.389.1821 Ver. 3.1 2016 Johanson Technology, Inc. All Rights Reserved

"High Frequency Ceramic Solutions" 2.4 GHz Surface Mount, Above Metal, Low Profile Mini Chip Antenna P/N 2450AT42E0100 This antenna must have metal underneath in order to function properly Detail Specification: 10/17/2016 Page 2 of 9 Mounting Considerations 1 50mm Want the layout file of this? Send us a ) 3mm message at: www.johansontechnology.com/ask-a-question 6.3mm To order a pre-tuned 50Ω EVB with a female 30mm 50Ω Feed Line SMA connector you see here Click here: www.johansontechnology.com/request-a- sample Ground Plane (where Reference p/n: 2450AT42E0100-EB1SMA other SMD components will be mounted) p/n: 2450AT42E0100-EB1SMA Need help designing the antenna in? Use our antenna design services! www.johansontechnology.com/ipc-antenna-services 2 Free layout reviews and if you need us to tune and characterize the antenna on your design (anechoic chamber) we can do that too (lab fee may apply for the latter). Mounting Considerations on EVB 1 - Detail The exact geometry of the detail below on your PCB is crutial for the proper performance of the antenna. Metal bottom GND plane to be placed directly 0.63mm 1.5mm 2mm 1.5mm 0.63mm underneath yellow soldemask zone, covering entire area. 0.3mm 0.6mm 1.0m 3m 1.5 nH m m * 3.3 nH 2.0 pF 0.6mm 0.5mm 6.26mm Floating pad Matching circuits Want the layout file? Send us a message at: www.johansontechnology.com/ask-a-question Component values of matching circuit will be different, depending on PCB layout, but the matching circuit’s type has to be “Series-Shunt-Shunt” shown as above *Line width should be designed to match 50ohm characteristic impedance, depending on PCB material and thickness., A coplanar waveguide trace is recommended for best results. For this particular antenna It is recommended that the designer leave available slots for a shunt-shunt-series network, even if all slots won't be used, this will prepare the PCB for the unpredictable final mass production version of the matching circuit. The antenna matching network values above are used when antenna is mounted on Johanson's evaluation board. The matching values on client’s PCB will be different. Johanson Technology, Inc. reserves the right to make design changes without notice. Please confirm the specifications and delivery conditions when placing your order. All sales are subject to Johanson Technology, Inc. terms and conditions. www.johansontechnology.com 4001 Calle Tecate • Camarillo, CA 93012 • TEL 805.389.1166 FAX 805.389.1821 Ver. 3.1 2016 Johanson Technology, Inc. All Rights Reserved

"High Frequency Ceramic Solutions" 2.4 GHz Surface Mount, Above Metal, Low Profile Mini Chip Antenna P/N 2450AT42E0100 This antenna must have metal underneath in order to function properly Detail Specification: 10/17/2016 Page 3 of 9 Mounting Considerations 2 - Circular PCB Evironments (coin cell type) Top View 0.63mm1.5mm 2mm 1.5mm 0.63mm 0.3m 0.6mm m 1.0m m 0.6mm 50Ω Feed Line 0.5mm radius=22mm (reference only) Want the layout file? Send us a message at: Ground www.johansontechnology.com/ask-a-question ) 31.7mm Receding the GND plane may sound counter- intuitive, but this helps shape the radiation pattern in 7mm a more isometric (spherical) shape. We recommend the designer do this of he/she can afford the reduce SMT space, but not mandated. Bottom View 0.3mm 6.26mm radius=22mm Ground 31.7mm 7mm Note: There's no orderable EVB available for the above "Mounting Considerations 2" reference design Johanson Technology, Inc. reserves the right to make design changes without notice. Please confirm the specifications and delivery conditions when placing your order. All sales are subject to Johanson Technology, Inc. terms and conditions. www.johansontechnology.com 4001 Calle Tecate • Camarillo, CA 93012 • TEL 805.389.1166 FAX 805.389.1821 Ver. 3.1 2016 Johanson Technology, Inc. All Rights Reserved

"High Frequency Ceramic Solutions" 2.4 GHz Surface Mount, Above Metal, Low Profile Mini Chip Antenna P/N 2450AT42E0100 This antenna must have metal underneath in order to function properly Detail Specification: 10/17/2016 Page 4 of 9 Typical Electrical Characteristics (T=25 °C) Return Loss 0 -5 m122 m123 dB(S(1,1)) -10 m118 -15 -20 2.0 2.2 2.4 2.6 2.8 3.0 freq, GHz m122 m118 m123 freq=2.400GHz freq=2.440GHz freq=2.480GHz dB(S(1,1))=-5.691 dB(S(1,1))=-11.343 dB(S(1,1))=-5.746 The designer should not be highly concerned of the fact that the antenna only demonstrates a -5dB S11 level at the band edges. The antenna has sufficient gain at the band edges to satisfy the applications and uses a high dielectric constant ceramic giving it some detuning resilience to capacitivel loading effects. This antenna is designed for close proximity applications such as the ones mentioned on page 1. Johanson Technology, Inc. reserves the right to make design changes without notice. Please confirm the specifications and delivery conditions when placing your order. All sales are subject to Johanson Technology, Inc. terms and conditions. www.johansontechnology.com 4001 Calle Tecate • Camarillo, CA 93012 • TEL 805.389.1166 FAX 805.389.1821 Ver. 3.1 2016 Johanson Technology, Inc. All Rights Reserved

"High Frequency Ceramic Solutions" 2.4 GHz Surface Mount, Above Metal, Low Profile Mini Chip Antenna P/N 2450AT42E0100 This antenna must have metal underneath in order to function properly Detail Specification: 10/17/2016 Page 5 of 9 Typical Electrical Characteristics (T=25 °C) Radiation Patterns@2.44GHz XY-plane @2440MHz Y :Φ(Phi)=90o Total X :Φ(Phi)=0o Z : θ(Theta)=0o XZ-plane @2440MHz Total YZ-plane @2440MHz Total Johanson Technology, Inc. reserves the right to make design changes without notice. Please confirm the specifications and delivery conditions when placing your order. All sales are subject to Johanson Technology, Inc. terms and conditions. www.johansontechnology.com 4001 Calle Tecate • Camarillo, CA 93012 • TEL 805.389.1166 FAX 805.389.1821 Ver. 3.1 2016 Johanson Technology, Inc. All Rights Reserved

"High Frequency Ceramic Solutions" 2.4 GHz Surface Mount, Above Metal, Low Profile Mini Chip Antenna P/N 2450AT42E0100 This antenna must have metal underneath in order to function properly Detail Specification: 10/17/2016 Page 6 of 9 How To Choose The Correct Antenna Variant We offer 2 other resonating variants of this antenna since the antenna's efficiency is largely affected by the thickness of the PCB's substrate. This allows a more robist design to fit your PCB. The disparity between antenna variations are internal only; variations are identical in dimension and solder footprint. Refer to the diagram below to understand what is meant by substrate thickness. * Substrate Thickness (H) * For PCBs consisting of multiple layers, the thickness (H) is limited only to the metal layer immediately below 'Top Metal Layer.' The below plot demonstrates the effect that substrate thickness has on the antenna's performance. 0 m21 m21 freq= 2.750GHz dB(S(1,1))=-5.035 -10 m23 m20 freq= 2.440GHz H=0.12 mm dB(S(2,2))=-33.495 dB(S(3,3)) dB(S(2,2)) dB(S(1,1)) m20 -20 freq= 2.240GHz H=1.5 mm dB(S(3,3))=-13.330 -30 m23 -40 H=0.7 mm 2.0 2.2 2.4 2.6 2.8 3.0 freq, GHz As you can see, there is a direct correlation between substrate thickness (H) and the resonant frequency. This is, in part, due to the natural capacitive loading effect and resonating frequency of the PCB itself. Our antenna variants were developed to counter this effect. Note: "H" substrate thickness of <0.25mm (10mil) is not recommended. The component will still work and radiate, just not optimally. Johanson Technology, Inc. reserves the right to make design changes without notice. Please confirm the specifications and delivery conditions when placing your order. All sales are subject to Johanson Technology, Inc. terms and conditions. www.johansontechnology.com 4001 Calle Tecate • Camarillo, CA 93012 • TEL 805.389.1166 FAX 805.389.1821 Ver. 3.1 2016 Johanson Technology, Inc. All Rights Reserved

"High Frequency Ceramic Solutions" 2.4 GHz Surface Mount, Above Metal, Low Profile Mini Chip Antenna P/N 2450AT42E0100 This antenna must have metal underneath in order to function properly Detail Specification: 10/17/2016 Page 7 of 9 How To Choose The Correct Antenna Variant Refer to the table below for substrate thickness and the corresponding antenna variation. PCB Substrate Thickness Recommended JTI PN ≤ 1.0mm 2450AT42E0100 1.0mm - 2.0mm 2450AT42E010B ≥ 2.0mm 2450AT42E010C Typical Efficiency Values @ 2.44GHz for various scenarios for a 30x50mm PCB The following efficiency values represent performance on a 30x50mm EVB like on page 2. Please note that antenna efficiency varies widely with board layout, size and surroundings. PCB Simulated Antenna Efficiency(%) @ 2.44GHz Substrate Thickness 2450AT42E0100 2450AT42E010B 2450AT42E010C (H) H = 0.12 mm 1.95% 1.02% 0.93% H = 0.7 mm 29.20% 9.30% 2.30% H = 1.5 mm 23.30% 41.90% 13.80% H = 2.5 mm 21.60% 34.20% 38.40% We encourage you to use a relatively thick dielectric layer below antenna, as we have seen a direct correlation between substrate thickness and antenna performance. Note: "H" substrate thickness of <0.25mm (10mil) is not recommended. The component will still work and radiate, just not optimally. Johanson Technology, Inc. reserves the right to make design changes without notice. Please confirm the specifications and delivery conditions when placing your order. All sales are subject to Johanson Technology, Inc. terms and conditions. www.johansontechnology.com 4001 Calle Tecate • Camarillo, CA 93012 • TEL 805.389.1166 FAX 805.389.1821 Ver. 3.1 2016 Johanson Technology, Inc. All Rights Reserved

"High Frequency Ceramic Solutions" 2.4 GHz Surface Mount, Above Metal, Low Profile Mini Chip Antenna P/N 2450AT42E0100 This antenna must have metal underneath in order to function properly Detail Specification: 10/17/2016 Page 8 of 9 Mounting Considerations 3 - Recommendations when using 2450AT42E010B Recommendations when using the 2450AT42E010B We have found that the best performance can be gained when using the 2450AT42E010B with a 4-layer PCB with a total thickness approximately 1.5mm thick. 3mm 6.3mm Ground 30mm 2450AT42E010B evaluation board (PN 2450AT42E010B-EB1SMA) Want the layout file? Send us a message at: www.johansontechnology.com/ask-a-question The 2450AT42E010B 4-layer evaluation board has the following stackup: 6 mil To order a pre-tuned 50Ω EVB with a female SMA connector, click here: www.johansontechnology.com/request-a- 41 mil sample Reference p/n: 2450AT42E010B-EB1SMA 6 mil Johanson Technology, Inc. reserves the right to make design changes without notice. Please confirm the specifications and delivery conditions when placing your order. All sales are subject to Johanson Technology, Inc. terms and conditions. www.johansontechnology.com 4001 Calle Tecate • Camarillo, CA 93012 • TEL 805.389.1166 FAX 805.389.1821 Ver. 3.1 2016 Johanson Technology, Inc. All Rights Reserved

"High Frequency Ceramic Solutions" 2.4 GHz Surface Mount, Above Metal, Low Profile Mini Chip Antenna P/N 2450AT42E0100 This antenna must have metal underneath in order to function properly Detail Specification: 10/17/2016 Page 9 of 9 Antenna layout review, tuning, and characterization services www.johansontechnology.com/ipc-antenna-services More SMD Chip Antennas at: www.johansontechnology.com/antennas Soldering Information www.johansontechnology.com/ipcsoldering-profile Antenna layout and tuning techniques (How to obtain the new antenna matching values) www.johansontechnology.com/tuning Packaging information http://www.johansontechnology.com/tape-reel-packaging RoHS Compliance www.johansontechnology.com/rohs-compliance MSL Info www.johansontechnology.com/msl-rating P/N Explanation and Breakdown www.johansontechnology.com/ipc-pn-explained Recommended Storage Conditions of -40 ~ +85 °C, Humidity 45~75%RH, 18 mos. Max uninstalled product still on T&R Johanson Technology, Inc. reserves the right to make design changes without notice. Please confirm the specifications and delivery conditions when placing your order. All sales are subject to Johanson Technology, Inc. terms and conditions. Technical Author: Manuel Carmona www.johansontechnology.com 4001 Calle Tecate • Camarillo, CA 93012 • TEL 805.389.1166 FAX 805.389.1821 Ver. 3.1 2016 Johanson Technology, Inc. All Rights Reserved


Document Created: 2016-10-17 12:42:51
Document Modified: 2016-10-17 12:42:51
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