WLA01 ETC2 | Alldatasheet
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SPE-11-8-146/C/SS Page 1 of 14 Specification Part No. : WLA.01 Model : 2.4GHz High Efficiency Loop Antenna Description : 2.5dBi 2400MHz to 2500MHz WLAN/WIFI/Bluetooth/Zigbee Features : 3.2*1.6*0.5mm Low Profile Peak gain 2.5dBi
50 Ohm Impedance
RoHS
SPE-11-8-146/C/SS Page 2 of 14 1. Introduction The WLA.01 2.4GHz Loop antenna is a high efficiency miniature SMD edge mounted ceramic antenna for very small space requirements for Wi-Fi, WLAN, Zigbee, Bluetooth and 802.11 applications. The WLA.01 uses the main PCB as its ground plane, thereby increasing Antenna Efficiency. It is tuned for different PCB sizes by simply changing the value of the matching worldwide. This antenna is delivered on tape and Reel.
1.1 Applications
*Bluetooth earphone systems *Hand-held devices when Bluetooth/Wi-Fi functions are needed, e.g., Smart phone. *IEEE802.11 b/g *ZigBee *Wireless PCMCIA cards or USB dongle 2. Specification - Table WLA.01 is designed to mount at the centre point of the edge of an evaluation board of 80 x 40mm.The antenna performance was measured with the WLA.01 mounted on the evaluation board with SMA(F) connector. No Parameter Specification
1 Center Frequency 2450MHz
2 Dimensions 3.2*1.6*0.5mm
3 VSWR 2 max (depends on the special environment)
4 Polarization Linear
5 Bandwidth 100MHz min. (under -10dB return Loss) 6 Peak Gain 2.5dBi typ. 7 Efficiency 84% typ.
8 Impedance 50
9 Operating Temperature -40°C+85°C
10 Temperature Coefficient（τf） 0 20 ppm @-20ºC to +80ºC
- Center frequency will be offset to working frequency according to the conditions of user’s Ground plane and radome. **The data was measured by A Test Lab Techno Corp. (CTIA Authorized Test Lab).
SPE-11-8-146/C/SS Page 3 of 14 3. Electrical Specification (80*40mm ground plane)
3.1 Return Loss
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3.2 VSWR
SPE-11-8-146/C/SS Page 5 of 14 4. 2D Radiation Pattern (80*40mm Ground Plane)
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4.1 XY Plane Radiation
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4.2 XZ Plane Radiation
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4.3 YZ Plane Radiation
Plane XZ(dBi) YZ(dBi) XY(dBi) Peak gain 2.09 2.05 0.38 Average Gain -1.68 -1.83 -4.23 5.1 3D Gain Pattern Efficiency & Peak Gain vs. Frequency
SPE-11-8-146/C/SS Page 9 of 14 5. Drawing (unit:mm) 5.1Test board with Antenna
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6 Layout Guide
6.1 Solder Land Pattern:
Land pattern for soldering (black marking areas) is as shown below. Depending on Customer’s requirement, matching circuit as shown below is also recommended. Clearance areas must be followed, footprint size 4.0*5.0mm.
6.2 Matching Circuit
SPE-11-8-146/C/SS Page 12 of 14 7. Recommended Reflow Temp Profile The WLA.01 Loop Antenna can be assembled following either Sn -Pb or Pb -Free assembly processes. The recommended soldering temperatures are as follows:
SPE-11-8-146/C/SS Page 13 of 14 8. Packing (1) Quantity/Reel: 6000pcs/Reel (2) Plastic Tape
SPE-11-8-146/C/SS Page 14 of 14
7.1 Tape Dimensions (unit: mm)
Feature Specifications Tolerances W 12 ±0.30 P 8 ±0.10 E 1.75 ±0.10 F 5.5 ±0.10 P2 2 ±0.10 D 1.5 ±0.10 Po 4 ±0.10 10Po 40 ±0.20
7.2 Pocket Dimensions (unit: mm)
Feature Specifications Tolerances Ao 1.9 ±0.10 Bo 3.5 ±0.10 Ko 0.8 ±0.10 t 0.3 ±0.05