ISA.05.A.033822

## **Specification** 

Part No. : **ISA.05.A.033822** 

Product Name 

: 915 MHz ISM Band Adhesive Mounted Patch Antenna for Internal Applications 

## Features 

: Double-Sided 3M Adhesive Mounted Antenna 5dBi Peak Gain mounted on 30cm Square Ground 0dBi Peak Gain In Free Space Dimensions: 80x50.5x11 mm 300 mm Φ1.37 cable IPEX MHFHT connector (U.FL compatible) IP65 water-proof Cable and connector customizable 

**RoHS Compliant** 

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## **1. Introduction** 

The Taoglas ISA.05 adhesive mounted antenna is designed primarily for 915 MHz ISM Band compact wireless applications where it may or may not be attached to metal. 

When placed on a reference 30cm square ground-plane, the antenna has an excellent directional hemispherical radiation pattern, high peak gain of 5dBi at zenith, and an efficiency of 68%. 

Even without a ground-plane underneath, the antenna achieves 0dBi and an efficiency of 45%. 

The antenna is IP65 water-resistant and comes standard with a Micro-Coaxial cable with 1.37mm diameter and IPEX MHFHT connector. The Taoglas ISA.05 is an excellent solution for the following applications: 

- Environments where there are lots of metal objects that it may be mounted to (such as near a car engine) 

- RFID Readers 

- Short range 915MHz mesh networks 

Cable type, length, and connector can be customized. Mechanical customization of the antenna can also be done for a minimum order quantity. Please contact your regional Taoglas office for more details. 

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## **2. Specification** 

|**ELECTRICAL**<br>~~a~~|**ELECTRICAL**<br>~~a~~|**ELECTRICAL**<br>~~a~~|**ELECTRICAL**<br>~~a~~|**ELECTRICAL**<br>~~a~~|**ELECTRICAL**<br>~~a~~|**ELECTRICAL**<br>~~a~~|
|---|---|---|---|---|---|---|
|ISM 915 MHz Band|||||||
|Measurement Environment|Free Space|||Direct On 30cm * 30cm Ground Plane|||
|Operation Frequency (MHz)|902|915|928|902|915|928|
|Return Loss (dB)|-5|-6|-3|-3|-11|-3|
|VSWR|3.6|3|5.9|5.9|2|5.9|
|Efficiency (%)|46.25|47.51|18.55|26.36|68.94|62.64|
|Peak Gain (dBi)|0.52|-0.02|-4.10|0.83|5.12|4.77|
|Average Gain (dBi)|-3.34|-3.23|-7.31|-5.79|-1.61|-2.03|
|Polarization|Linear||||||
|Impedance|50 Ohms||||||
|Max Input Power|5 Watts||||||
|**MECHANICAL**<br>~~eee~~|||||||
|Dimension (mm)|80*50.5*11 (Antenna Main Body)||||||
|Cable length|300mm||||||
|Cable Type|Ф1.37 RF Coaxial Cable||||||
|Connector|IPEX MHFHT||||||
|Appearance|Black, Heat Shrink with Glue||||||
|Gasket & Adhesive|3M 9448 + CR-4305||||||
|Weight|32g||||||
|**ENVIRONMENTAL RATINGS**<br>~~eee~~|||||||
|Protection|IP65||||||
|Storage Temperature Range|-40°C to +85°C||||||
|Operation Temperature Range|-40°C to +85°C||||||
|Humidity|Non-condensing 65°C 95% RH||||||



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## **3. Antenna Characteristics** 

## **3.1 Return Loss** 

## **3.2 Average Gain** 

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## **3.3 Efficiency** 

## **3.4 Peak Gain** 

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## **4. Antenna Radiation Patterns** 

## **4.1 Antenna Setup** 

The antenna radiation pattern measurement setup is shown below. 

**==> picture [284 x 75] intentionally omitted <==**

**----- Start of picture text -----**<br>
Y  Y<br>X  X<br>Z  Z<br>**----- End of picture text -----**<br>


In free space 

Center of 30cm*30cm Ground Plane 

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## **4.2 Antenna Radiation Patterns** 

**4.2.1 In Free Space** 

## **XY Plane** 

**XZ Plane** 

**==> picture [151 x 429] intentionally omitted <==**

**----- Start of picture text -----**<br>
X<br>———___ 30<br>WN 60<br>/ I} | 90 Y<br>120<br>4150<br>(a8)<br>Z<br>30<br>60<br>< \<br>—|<br>X<br>**----- End of picture text -----**<br>


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## **YZ Plane** 

**==> picture [152 x 145] intentionally omitted <==**

**----- Start of picture text -----**<br>
Z<br>30<br>60<br>/ > — \<br>— |<br>Y<br>**----- End of picture text -----**<br>


## **4.2.2 At the Center of 30cm*30cm Ground Plane** 

## **XY Plane** 

**==> picture [142 x 137] intentionally omitted <==**

**----- Start of picture text -----**<br>
X<br>~ 30<br>60<br>\<br>Y<br>**----- End of picture text -----**<br>


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## **XZ Plane** 

**==> picture [151 x 143] intentionally omitted <==**

**----- Start of picture text -----**<br>
Z<br>30<br>60<br>/ > —\<br>MA<br>X<br>**----- End of picture text -----**<br>


## **YZ Plane** 

**==> picture [152 x 145] intentionally omitted <==**

**----- Start of picture text -----**<br>
Z<br>~ 30<br>60<br>Y<br>**----- End of picture text -----**<br>


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## **4.2.3 3D Radiation Pattern in Free Space** 

## **4.2.4 3D Radiation Pattern On 30cm*30cm Ground Plane** 

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## **5. Drawing (Units: mm)** 

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## **6. Packaging** 

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## **7. Installation** 

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## **8. Application Note** 

## **8.1 Ground Size and proximity affects performance** 

## **8.2 Ground Plane Beside Antenna Effect** 

Any ground plane beside the antenna should be at least 10mm away from the antenna main body to keep antenna radiating normally. 

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## **8.3 Ground Plane Under Antenna Effect** 

## **8.4 Ground Plane Above Antenna Effect** 

Any ground plane above the antenna should be at least 55mm away from the antenna main body to keep antenna radiating normally. 

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Taoglas makes no warranties based on the accuracy or completeness of the contents of this document and reserves the right to make changes to specifications and product descriptions at any time without notice. Taoglas reserves all rights to this document and the information contained herein. 

Reproduction, use or disclosure to third parties without express permission is strictly prohibited. Copyright © Taoglas Ltd. 

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