ANT-916-WRT-RPS

## **ANT-916-WRT-ccc 915 MHz External Panel-Mount Antenna** 

The ANT-916-WRT is a low-profile, panel-mount dipole antenna designed for low-power, wide-area (LPWA) applications including LoRaWAN®, remote controls, and ISM band applications in the 902 MHz to 930 MHz range. The ANT-916-WRT antenna’s compact size allows it to be mounted in applications requiring a low profile and external antenna performance, such as wireless vending and traffic control equipment. 

The ANT-916-WRT antenna is designed with an integrated counterpoise that eliminates the need for additional ground plane in the product, making it ideal for applications with non-conductive or RF transparent enclosures. Connector options for the ANT-916-WRT antenna are: SMA plug (male pin), RP-SMA plug (female socket) or MHF1/U. FL-type plug (female socket). 

## **FEATURES** 

- Performance at 915 MHz – VSWR: ≤ 1.5 – Peak Gain: 4.4 dBi – Efficiency: 50% 

- Low-profile – Height: 10.0 mm (0.40 in) 

   - Diameter: 19.0 mm (0.75 in) 

- Mounts permanently with pressure sensitive adhesive ring and provided nut 

## **APPLICATIONS** 

- Low-power, wide-area (LPWA) applications – LoRaWAN®, ITU-T Y.4480 

- ISM applications 

- Remote control, sensing and monitoring 

   - Security systems 

   - Industrial machinery 

   - Automated equipment 

   - AMR (automated meter reading) 

- Internet of Things (IoT) devices 

- Smart Home networking 

## **ORDERING INFORMATION** 

|Part Number|Description|
|---|---|
|ANT-916-WRT-UFL-150|Antenna, 150 mm (5.91 in) of 1.32 mm coaxial cable, MHF1/U.FL-type plug (female socket)|
|ANT-916-WRT-UFL|Antenna, 216 mm (8.50 in) of 1.32 mm coaxial cable, MHF1/U.FL-type plug (female socket)|
|ANT-916-WRT-UFL-300|Antenna, 300 mm (11.81 in) of 1.32 mm coaxial cable, MHF1/U.FL-type plug (female socket)|
|ANT-916-WRT-RPS|Antenna, 216 mm (8.50 in) of RG-174 coaxial cable, RP-SMA plug (female socket)|
|ANT-916-WRT-SMA|Antenna, 216 mm (8.50 in) of RG-174 coaxial cable, SMA plug (male pin)|
|ANT-916-WRT-<br>SMA-300|Antenna, 300 mm (11.81 in) of RG-174 coaxial cable, SMA plug (male pin)|



Available from Linx Technologies and select distributors and representatives. 

DATA AND DEVICES / ANT-916-WRT-ccc 

## **TABLE 1. ELECTRICAL SPECIFICATIONS** 

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ANT-916-WRT 915 MHz<br>Frequency Range 902 MHz to 930 MHz<br>VSWR (max) 1.5<br>Peak Gain (dBi) 4.4<br>Average Gain (dBi) -3.2<br>Efficiency (%) 50<br>Polarization Linear<br>Impedance 50 Ω<br>Wavelength 1/2-wave<br>Radiation Omnidirectional<br>Max Power 5 W<br>Electrical Type Dipole<br>**----- End of picture text -----**<br>


Electrical specifications and plots measured with a 102 mm x 102 mm (4.0 in x 4.0 in) reference ground plane. 

## **TABLE 2. MECHANICAL SPECIFICATIONS** 

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Coaxial Cable,<br>Parameter Connection minimum inside  Weight<br>bend radius<br>150 mm = 6.6 g (0.23 oz)<br>1.32 mm: 6.0 mm<br>ANT-916-WRT-UFL MHF1/U.FL-type plug 216 mm = 6.9 g (0.24 oz)<br>(0.24 in) 300 mm = 7.3 g (0.26 oz)<br>RG-174: 10.2 mm<br>ANT-916-WRT-RPS RP-SMA plug 216 mm = 12.5 g (0.44 oz)<br>Electrical specifications and plots measured with a 102 mm x 102 mm (4.0 in x 4.0 in) reference ground plane.(0.40 in)<br>RG-174: 10.2 mm  216 mm = 12.5 g (0.44 oz)<br>ANT-916-WRT-SMA SMA plug (0.40 in) 300 mm = 13.5 g (0.48 oz)<br>Operating Temp. Range -40 °C to +90 °C<br>Dimensions Height: 10.0 mm (0.40 in), Diameter: 19.0 mm (0.75 in)<br>**----- End of picture text -----**<br>


## **PACKAGING INFORMATION** 

The ANT-916-WRT antenna is placed in a clear plastic sleeve and sealed in clear plastic bags in quantities of 50 pcs. Bags are packaged in cartons of 250 (5 bags). Distribution channels may offer alternative packaging options. 

## **PRODUCT DIMENSIONS** 

Figure 1 provides dimensions for the ANT-916-WRT antenna. 

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Adhesive Ring Ø19.0 mm<br>(0.75 in)<br>8-sided plastic nut and mounting shaft<br>M11 x 1.0 mm<br>Ø5.3 mm (0.21 in)<br>Counterpoise<br>-SMA, -RPS<br>-MHF1/U.FL<br>8.0 mm 10.0 mm<br>(0.32 in) (0.39 in)<br>82.5 mm (3.25 in)<br>See Ordering Information for<br>cable length and termination options<br>**----- End of picture text -----**<br>


Figure 1. ANT-916-WRT Antenna Dimensions 

DATA AND DEVICES / ANT-916-WRT-ccc 

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## **RECOMMENDED MOUNTING** 

The recommended enclosure mounting dimensions are shown in Figure 2. The ANT-916-WRT series antenna is supplied with an integrated closed-cell pressure sensitive adhesive ring which helps seal enclosures against external elements. The adhesive ring has a protective plastic backing that must be removed prior to installation. A pull tab has been provided for easy removal of the protective backing. The antenna can be permanently mounted using the provided nut which should be tightened to 4.0 kgf/cm (5 in/ lbs) max. The recommended maximum enclosure wall thickness is 4.70 mm (0.188 in). 

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Ø10.8 mm<br>(0.43 in)<br>**----- End of picture text -----**<br>


Figure 2. ANT-916-WRT Series Antenna Recommended Enclosure Mounting Dimensions 

## **ANTENNA ORIENTATION** 

The ANT-916-WRT series antenna is characterized in two antenna orientations as shown in Figure 3. The antenna in free space characterizes use of an antenna attached to an enclosure-mounted connector which is connected by cable to a printed circuit board. Although the antenna is a dipole not requiring a ground plane for function, characterization with an adjacent ground plane (102 mm x 102 mm) provides insight into antenna performance when attached directly to a printed circuit board mounted connector. The two orientations represent the most common end-product use cases. 

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Free Space<br>**----- End of picture text -----**<br>


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Center of Ground Plane<br>**----- End of picture text -----**<br>


Figure 3. ANT-916-WRT Test Orientations 

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## **FREE SPACE, NO GROUND PLANE** 

The charts on the following pages represent data taken with the antenna oriented in free space without a ground plane, as shown in Figure 4. 

Figure 4. ANT-916-WRT in Free Space, No Ground Plane 

## **VSWR** 

Figure 5 provides the voltage standing wave ratio (VSWR) across the antenna bandwidth. VSWR describes the power reflected from the antenna back to the radio. A lower VSWR value indicates better antenna performance at a given frequency. Reflected power is also shown on the right-side vertical axis as a gauge of the percentage of transmitter power reflected back from the antenna. 

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5<br>SRG ee ee ee eee eee<br>Se eee eee 40<br>Se eee eee<br>Se ee ee eeeeee<br>4<br>Oeeee<br>Oe eee eee eeeeee 30<br>Oe eee eee eeeeee<br>3 PP Pe eT PT PE<br>Oe eee eee 20<br>SR Ee eeeee.<br>SRR ee eee eee =. 2a<br>2 SERRE.<br>10<br>Se 2a eee eee<br>SRR  eee =eee<br>eS S Eee SS =. 2 eee eee eee<br>ee ee Oe<br>PPeee<br>1 0<br>900 905 910 915 920 925 930 935<br>Frequency (MHz)<br>902 930<br>VSWR<br>Reflected Power (%)<br>**----- End of picture text -----**<br>


Figure 5. ANT-916-WRT VSWR, Free Space 

DATA AND DEVICES / ANT-916-WRT-ccc 

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## **RETURN LOSS** 

Return loss (Figure 6), represents the loss in power at the antenna due to reflected signals. Like VSWR, a lower return loss value indicates better antenna performance at a given frequency. 

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0<br>-2<br>-4<br>-6<br>-8<br>-10<br>-12<br>-14<br>-16<br>-18<br>-20<br>900 905 910 915 920 925 930 935<br>Frequency (MHz)<br>902 930<br>Return Loss (dB)<br>**----- End of picture text -----**<br>


Figure 6. ANT-916-WRT Return Loss, Free Space 

## **PEAK GAIN** 

The peak gain across the antenna bandwidth is shown in Figure 7. Peak gain represents the maximum antenna input power concentration across 3-dimensional space, and therefore peak performance at a given frequency, but does not consider any directionality in the gain pattern. 

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5<br>0<br>-5<br>-10<br>-15<br>-20<br>900 905 910 915 920 925 930 935<br>Frequency (MHz)<br>902 930<br>Peak Gain (dBi)<br>**----- End of picture text -----**<br>


Figure 7. ANT-916-WRT Peak Gain, Free Space 

DATA AND DEVICES / ANT-916-WRT-ccc 

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## **AVERAGE GAIN** 

Average gain (Figure 8), is the average of all antenna gain in 3-dimensional space at each frequency, providing an indication of overall performance without expressing antenna directionality. 

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5<br>0<br>-5<br>-10<br>-15<br>-20<br>900 905 910 915 920 925 930 935<br>Frequency (MHz)<br>902 930<br>Average Gain (dBi)<br>**----- End of picture text -----**<br>


Figure 8. ANT-916-WRT Antenna Average Gain, Free Space 

## **RADIATION EFFICIENCY** 

Radiation efficiency (Figure 9), shows the ratio of power delivered to the antenna relative to the power radiated at the antenna, expressed as a percentage, where a higher percentage indicates better performance at a given frequency. 

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100<br>90<br>80<br>70<br>60<br>50<br>40<br>30<br>20<br>10<br>0<br>900 905 910 915 920 925 930 935<br>Frequency (MHz)<br>Figure 9. ANT-916-WRT Antenna Radiation Efficiency, Free Space<br>902 930<br>Efficiency (%)<br>**----- End of picture text -----**<br>


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## **RADIATION PATTERNS** 

Radiation patterns provide information about the directionality and 3-dimensional gain performance of the antenna by plotting gain at specific frequencies in three orthogonal planes. Antenna radiation patterns are shown in Figure 10 using polar plots covering 360 degrees. The antenna graphic at the top of the page provides reference to the plane of the column of plots below it. Note: when viewed with typical PDF viewing software, zooming into radiation patterns is possible to reveal fine detail. 

## **RADIATION PATTERNS - FREE SPACE** 

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XZ-Plane Gain<br>**----- End of picture text -----**<br>


YZ-Plane Gain 

XY-Plane Gain 

## **902 MHZ TO 930 MHZ (915 MHZ)** 

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35 36 5 1 2 3 35 36 5 1 2 3 35 36 5 1 2 3<br>34 0 4 34 0 4 34 0 4<br>33 -5 5 33 -5 5 33 -5 5<br>32 -10-15 6 32 -10-15 6 32 -10-15 6<br>31 -20 7 31 -20 7 31 -20 7<br>-25 -25 -25<br>30 -30 8 30 -30 8 30 -30 8<br>-35 -35 -35<br>29 -40 9 29 -40 9 29 -40 9<br>-45 -45 -45<br>28 -50 10 28 -50 10 28 -50 10<br>27 11 27 11 27 11<br>Go |“-\\ |<br>26 L 12 26 12 26 12<br>25 13 25 13 25 13<br>24 14 24 14 24 14<br>23 15 23 15 23 15<br>22 16 22 16 22 16 902 MHz<br>21 20 19 18 17 21 20 19 18 17 21 20 19 18 17 915 MHz930 MHz<br>XZ-Plane Gain YZ-Plane Gain XY-Plane Gain<br>**----- End of picture text -----**<br>


Figure 10. ANT-916-WRT Radiation Patterns, Free Space 

DATA AND DEVICES / ANT-916-WRT-ccc 

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## **CENTER OF GROUND PLANE** 

The charts on the following pages represent data taken with the antenna oriented at the center of the ground plane, as shown in Figure 11. 

Figure 11. ANT-868-WRT at Center of Ground Plane 

## **VSWR** 

Figure 12 provides the voltage standing wave ratio (VSWR) across the antenna bandwidth. VSWR describes the power reflected from the antenna back to the radio. A lower VSWR value indicates better antenna performance at a given frequency. Reflected power is also shown on the right-side vertical axis as a gauge of the percentage of transmitter power reflected back from the antenna. 

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5<br>40<br>4<br>30<br>3<br>20<br>2<br>10<br>1 0<br>900 905 910 915 920 925 930 935<br>Frequency (MHz)<br>902 930<br>VSWR<br>Reflected Power (%)<br>**----- End of picture text -----**<br>


Figure 12. ANT-916-WRT VSWR, Center of Ground Plane 

DATA AND DEVICES / ANT-916-WRT-ccc 

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## **RETURN LOSS** 

Return loss (Figure 13), represents the loss in power at the antenna due to reflected signals. Like VSWR, a lower return loss value indicates better antenna performance at a given frequency. 

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0<br>-5<br>-10<br>-15<br>-20<br>-25<br>900 905 910 915 920 925 930 935<br>Frequency (MHz)<br>902 930<br>Return Loss (dB)<br>**----- End of picture text -----**<br>


Figure 13. ANT-916-WRT Return Loss, Center of Ground Plane 

## **PEAK GAIN** 

The peak gain across the antenna bandwidth is shown in Figure 14. Peak gain represents the maximum antenna input power concentration across 3-dimensional space, and therefore peak performance at a given frequency, but does not consider any directionality in the gain pattern. 

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5<br>0<br>-5<br>-10<br>-15<br>-20<br>900 905 910 915 920 925 930 935<br>Frequency (MHz)<br>902 930<br>Peak Gain (dBi)<br>**----- End of picture text -----**<br>


Figure 14. ANT-916-WRT Peak Gain, Center of Ground Plane 

DATA AND DEVICES / ANT-916-WRT-ccc 

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## **AVERAGE GAIN** 

Average gain (Figure 15), is the average of all antenna gain in 3-dimensional space at each frequency, providing an indication of overall performance without expressing antenna directionality. 

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5<br>0<br>-5<br>-10<br>-15<br>-20<br>900 905 910 915 920 925 930 935<br>Frequency (MHz)<br>902 930<br>Average Gain (dBi)<br>**----- End of picture text -----**<br>


Figure 15. ANT-916-WRT Antenna Average Gain, Center of Ground Plane 

## **RADIATION EFFICIENCY** 

Radiation efficiency (Figure 16), shows the ratio of power delivered to the antenna relative to the power radiated at the antenna, expressed as a percentage, where a higher percentage indicates better performance at a given frequency. 

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**----- Start of picture text -----**<br>
100<br>90<br>80<br>70<br>60<br>50<br>40<br>30<br>20<br>10<br>0<br>900 905 910 915 920 925 930 935<br>Frequency (MHz)<br>902 930<br>Efficiency (%)<br>**----- End of picture text -----**<br>


Figure 16. ANT-916-WRT Antenna Radiation Efficiency, Center of Ground Plane 

DATA AND DEVICES / ANT-916-WRT-ccc 

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## **RADIATION PATTERNS** 

Radiation patterns provide information about the directionality and 3-dimensional gain performance of the antenna by plotting gain at specific frequencies in three orthogonal planes. Antenna radiation patterns are shown in Figure 17 using polar plots covering 360 degrees. The antenna graphic at the top of the page provides reference to the plane of the column of plots below it. Note: when viewed with typical PDF viewing software, zooming into radiation patterns is possible to reveal fine detail. 

## **RADIATION PATTERNS - FREE SPACE** 

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XZ-Plane Gain<br>1<br>[nN] 36 2<br>**----- End of picture text -----**<br>


YZ-Plane Gain 

XY-Plane Gain 

## **902 MHZ TO 930 MHZ (915 MHZ)** 

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33 34 35 oer 36 -550 1 2 3 _~ 4 5 33 34 35 _— 36 -550 1 2 — 3 4 5 33 34 35 36 -550 1 2 3 4 5<br>31 32 ~ -10-15-20 ~ . 6 ' 7 31 32 -10-15-20 6 7 31 32 CS -10-15-20 Se —E 6 7<br>30 Ome -25-30 8 30 VyA <tr — -25-30  se S- \ 8 30 //y Ye. -25-30  rin \Y\ \ 8<br>Ky -35 -35 -35<br>29 LOGO -40 x  aR SS,Vr \ \ | 9 29 IZ OO -40 ALT?  XS. \\ \\ \ 9 29 LiLI Wh NSLSff  SSIhy -40  \\\4 \ \ 9<br>28 ,NoZ HS EER -45-50 7 E +  ARSSA|NY \ \ 10 28 PERI/i Jf LLLf/OM arSRS -45-50 S-Senay, ONSamS\\)\\ \\\\\q \4\4\ \ \ \ 10 28 PPi fyHE YELL LLY / | f LonEEG) ex -45-50  ante ON \VyAH \\ \\yy\ \LyAH\ |yyy\ 10<br>27 Sf SOT Oxy \ 11 27 PTT\ \ A \\\ |_| 11 27 {4 AAAS TTT BY | 11<br>26 LYV1 25 \ V4< |VX| LXEe< PAK)TTSLi Sa LTT4pAG ,//7! 13 / 12 2625 \ \\\ \ \ \ peeswae LW / / / 13 | 12 26 \\ 25 : nh \ AA» TTaad - A/ 13 / 12<br>|\ AR\|| 24 \iSS Rav 23 |V4 wtAX| 22 | |w OX \ e STO senas!ae[IIef f Me AHHieten Op aAT L 16  | tof A yy/ 15  [| 14 / | | \ \h\\ \\ 24 \XQ RE 23 OO\\ 22  SSTXO\S; \\_—-—~-__-SEES24 LLL]J Di), / 4 16 YW| J 15  /// / 14 \ 24 \\INSAPS 23 QE 22 NeeaSf omaa—_ —T+tSfy Ly> Y 16 Ya 15 - / 14902 MHz<br>21 20 19 18 17 21 —— 20 19 18 17 21 tL 20 19 18 17 _~ 930 MHz930 MHz<br>XZ-Plane Gain YZ-Plane Gain XY-Plane Gain<br>**----- End of picture text -----**<br>


Figure 17. ANT-916-WRT Radiation Patterns, Center of Ground Plane 

DATA AND DEVICES / ANT-916-WRT-ccc 

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DATA AND DEVICES / ANT-916-WRT-ccc