A10464-U1

Clarki Quad-band M2M Antenna Part No. A10464 gigaNOVA® Product Specification 1 Features • • • • • • • • Adjustable GSM antenna targeting M2M applications Resonant frequency adjustable using single tuning component Space-saving corner mount enables antenna space to be shared with GSM module Works in both upper right and left corners High efficiency Easy to integrate Intended for corner mounting with screw fixings (x2) Supplied in trays Clarki supports the following communication standards: GSM/GPRS/EDGE GSM850 (E)GSM900 GSM1800 (DCS) GSM1900 (PCS) Other Standards CDMA Band II CDMA Band V Korean PCS AWS 2 Description A10464 is designed to be mounted in either corner of a PCB by means of a robust screw-in fixing ideal for M2M application. The design allows an SMT GSM/GPRS module to occupy part of the space under the antenna, allowing an optimal use of the space on the host PCB. The antenna is not symmetric, and therefore performance when mounted on left and right corner is slightly different, with a little advantage in the left corner position. A10464 uses the host PCB ground plane in order to radiate efficiently and so its performance depend also on the size and design of the host PCB; a minimum PCB length of 100mm is recommended, although the antenna works on smaller PCBs, with performance decreasing with PCB size. The ground plane extends under the antenna, but for optimal performance a 3mm ground clearance strip along the edge of the PCB in correspondence of the antenna is recommended. The antenna uses a matching circuit to achieve optimized results for the specific frequency bands that are required, and the resonant frequency of the antenna can be adjusted using an additional component to compensate for the effect of nearby objects like a plastic cover. This product specification shows the performance of the antenna on an Antenova reference board, A10464-U1, when optimized to cover a typical quad-band reception: GSM850/900/1800/1900. Antennas for Wireless M2M Applications 1 Product Specification 12MD-0047-3-PS Clarki GSM M2M Antenna Part No. A10464 3 Applications • • • • • Smart Metering/AMR Tracker devices Industrial Applications Femto / Pico base stations Other M2M communication 4 Part number Clarki: A10464 5 General data Product Name Clarki GSM Part Number A10464 Frequency 824 – 960 MHz 1710 –1990 MHz Polarization Linear Operating Temperature -40 ºC to +85 ºC Impedance with Matching 50 Ω Weight 1.3 g Antenna Type Corner Mount / Screw Fixing (x2) Connection Type Pogo pins or Spring Contacts (x2) Dimensions 26.10 x 26.10 x 10.15 [mm] Material FPC on plastic carrier Antennas for Wireless M2M Applications 2 Product Specification 12MD-0047-3-PS Clarki GSM M2M Antenna Part No. A10464 6 Electrical characteristics Typical Performance Peak Gain [dBi] Minimum Efficiency [%] Average Efficiency [%] Minumum Return Loss [dB] VSWR 1.0 Left Corner 1 With Module 1.3 Right Corner 1 With Module 1.0 2.4 3.0 2.2 2.7 824-960 MHz 55 59 53 57 1710-1990 MHz 67 57 62 52 824-960 MHz 62 64 60 63 1710-1990 MHz 73 64 68 60 824-960 MHz 7.0 7.4 6.8 7.2 1710-1990 MHz 8.0 6.2 7.2 6.0 824-960 MHz 2.6:1 2.5:1 2.7:1 2.5:1 1710-1990 MHz 2.3:1 2.9:1 2.5:1 3.0:1 Frequency Left Corner Right Corner 824-960 MHz 1.4 1710-1990 MHz Conditions All data measured on Antenova’s reference board, part number A10464-U1. 1 Typical commercially available SMT GSM Module Antennas for Wireless M2M Applications 3 Product Specification 12MD-0047-3-PS Clarki GSM M2M Antenna Part No. A10464 7 Electrical performance 7-1 Return Loss Figure 1: Impedance Matching (Left and Right positions) - No module Antennas for Wireless M2M Applications 4 Product Specification 12MD-0047-3-PS Clarki GSM M2M Antenna Part No. A10464 Figure 2: Impedance Matching (Left and Right positions) - with typical SMT GSM Module Antennas for Wireless M2M Applications 5 Product Specification 12MD-0047-3-PS Clarki GSM M2M Antenna Part No. A10464 7-2 VSWR Figure 3: Left and Right positions – no module Antennas for Wireless M2M Applications 6 Product Specification 12MD-0047-3-PS Clarki GSM M2M Antenna Part No. A10464 Figure 4 Left and Right positions - with typical SMT GSM Module Antennas for Wireless M2M Applications 7 Product Specification 12MD-0047-3-PS Clarki GSM M2M Antenna Part No. A10464 7-3 Antenna efficiency Figure 5: Left and Right positions - No module Figure 6: Left and Right positions - with typical SMT GSM Module Antennas for Wireless M2M Applications 8 Product Specification 12MD-0047-3-PS Clarki GSM M2M Antenna Part No. A10464 7-4 Antenna patterns (Right mount) 824-960 MHz 0° E16486 Radial Scale: dBi 270° -25 -15 -5 180° 5 90° 0° E16486 Radial Scale: dBi 0° Plane YZ Plane XZ Pol. Total Pol. Total Pol. Total 824 824 824 900 900 900 960 960 960 270° -25 -15 -5 5 90° 270° 180° XY plane E16486 Radial Scale: dBi Plane XY YZ plane -25 -15 -5 5 90° 180° XZ plane Patterns show combined polarisations measured on reference board A10464-U1. 3D Pattern measured at 890 MHz Antennas for Wireless M2M Applications 9 Product Specification 12MD-0047-3-PS Clarki GSM M2M Antenna Part No. A10464 7-5 Antenna patterns (Left mount) 824-960 MHz 0° E16484 Radial Scale: dBi 270° -25 -15 -5 5 90° 0° E16484 Radial Scale: dBi 0° Plane YZ Plane XZ Pol. T otal Pol. T otal Pol. T otal 824 824 824 900 900 900 960 960 960 270° -25 -15 -5 5 90° 270° 180° 180° XY plane E16484 Radial Scale: dBi Plane XY YZ plane -25 -15 -5 5 90° 180° XZ plane Patterns show combined polarisations measured on reference board A10464-U1. 3D Pattern measured at 890 MHz Antennas for Wireless M2M Applications 10 Product Specification 12MD-0047-3-PS Clarki GSM M2M Antenna Part No. A10464 7-6 Antenna patterns (Right mount) 1710 - 1990 MHz E16486 Radial Scale: dBi 270° -25 -15 -5 5 90° E16486 Radial Scale: dBi Plane XY Plane YZ Pol. Total Pol. Total E16486 Radial Scale: dBi Plane XZ Pol. Total 1710 1710 1710 1870 1870 1870 1990 1990 1990 270° -25 -15 -5 5 90° -25 270° XY plane YZ plane -5 5 90° 180° 180° 180° -15 XZ plane Patterns show combined polarisations measured on reference board A10464-U1. 3D Pattern measured at 1870 MHz Antennas for Wireless M2M Applications 11 Product Specification 12MD-0047-3-PS Clarki GSM M2M Antenna Part No. A10464 7-7 Antenna patterns (Left mount) 1710 – 1990 MHz 0° E16484 Radial Scale: dBi 270° -25 -15 -5 180° 5 90° 0° E16484 Radial Scale: dBi 0° Plane YZ Plane XZ Pol. Total Pol. Total Pol. Total 1710 1710 1710 1870 1870 1870 1989 1990 1990 270° -25 -15 -5 5 90° -25 270° -15 -5 5 90° 180° 180° XY plane E16484 Radial Scale: dBi Plane XY YZ plane XZ plane Patterns show combined polarisations measured on reference board A10464-U1. 3D Pattern measured at 1870 MHz Antennas for Wireless M2M Applications 12 Product Specification 12MD-0047-3-PS Clarki GSM M2M Antenna Part No. A10464 8 Antenna dimensions Top View Bottom View L W H Length Width Height 26.10 +/- 0.2 26.10 +/-0.2 10.15 +/- 0.15 Dimensions in mm Clarki GSM (Part No: A10464) antenna dimensions 3D model of the antenna is available from Antenova M2M on request. Please contact sales@antenovam2m.com for further details. Antennas for Wireless M2M Applications 13 Product Specification 12MD-0047-3-PS Clarki GSM M2M Antenna Part No. A10464 9 Antenna footprint Clarki GSM (Part No: A10464) Placement on PCB CAD files of the antenna footprint are available to download from www.antenova-m2m.com. A B C D E F G H I 9.78 ±0.15 0.5 ±0.15 11.0 ±0.15 10.42 ±0.15 20.70 ±0.15 10.40 ±0.15 2.98 ±0.15 5.00 DIA ±0.15 2.50 ±0.15 Dimensions in millimeters Antennas for Wireless M2M Applications 14 Product Specification 12MD-0047-3-PS Clarki GSM M2M Antenna Part No. A10464 10 Electrical interface 10-1 Transmission lines The antenna should be connected using an RF transmission line. All transmission lines should be designed to have a characteristic impedance of 50 Ω 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 Ω Once the material for the PCB has been chosen (PCB thickness and dielectric constant), a co-planar 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 line is 50 Ω. Please contact Antenova M2M (sales@antenova-m2m.com) if assistance is required. 10-2 Matching circuit The A10464 antenna requires an impedance matching circuit that must be optimized for each customer’s product. The matching circuit will typically require 3 matching components, and up to five components depending on the impedance of the antenna when situated in the device. It is recommended that all the components in the reference schematic (Fig 7) are included in the layout. Moreover, the antenna requires an additional inductor L1 on the return pin, which is used to adjust the resonant frequency in the low band (see below). Important: The position of the antenna feed and return pads are fixed for this product and the positions cannot be swapped over. Please check the reference layout for the relative position. P1 Feed C4 Connect to Radio module using 50Ω line Return C2 C1 L2 C1 L1 Figure 7: Antenna matching circuit and frequency adjustment Antennas for Wireless M2M Applications 15 Product Specification 12MD-0047-3-PS Clarki GSM M2M Antenna Part No. A10464 The values of the matching component given in the below table are for the A10464-U1 reference boards and might be different on a customer host board. Designator Value Tolerance Size Manufacturer PN L1 L2 C1 C2 C3 C4 P1 ±0.2nH ±3% Murata Murata 3.9nH 8.2nH 2.7pF 0.5pF 33pF See below ±0.1pF ±0.1pF ±5% 0402 0402 0402 0402 0402 0402 AVX AVX Any LQW15AN3N9C00 LQW15AN8N2H00 Not fitted 04023U2R7BAT2A 04025U0R5BAT2A Note: The component values for the matching circuit will vary depending on the size of the PCB and surrounding components. The impedance of the antenna should be measured before selecting suitable matching components. Antenova offers a matching service on request. Contact info@antenova.com for further information Antenna frequency adjustment The resonant frequency of the antenna can be adjusted to compensate small detuning caused by nearby objects like a plastic case or a large metal component. The adjustment does mostly affect the low-band resonance [824-960MHz], with a smaller effect on the upper frequency band [1710-1990MHz]. The adjustment in the resonant frequency is achieved by changing the value of the inductor on the grounding connection of the antenna: • • Decreasing the value of the inductor increases the resonant frequency, at an approximate rate of 20MHz/nH Increasing the value of the inductor increases the resonant frequency, at the same approximate rate of 25MHz/nH Position of the inductor Antennas for Wireless M2M Applications 16 Product Specification 12MD-0047-3-PS Clarki GSM M2M Antenna Part No. A10464 Figure 8 graphically shows the relation between the desired variation in frequency and the corresponding required variation in the inductor value. Figure 8 Variation of inductance required for the desired change in the low-band resonant frequency The plot is used as in this example: • • If the resonant frequency in the low-band has to be decreased by 25MHz, then the value of the inductor has to be increased by 1nH; to decrease the frequency 40MHz, increase the inductor 1.8nH. If the resonant frequency in the low-band has to be increase by 20MHz, then the value of the inductor has to be decrease by 1nH; to increase the frequency 40MHz, decrease the inductor 2.9nH. Antennas for Wireless M2M Applications 17 Product Specification 12MD-0047-3-PS Clarki GSM M2M Antenna Part No. A10464 10-3 Antenna placement Clarki should be fitted to the device so that power from the antenna can radiate into free space. Antenova strongly recommends placing the antenna in a corner of the board. A low profile (