ANT-2.4-WRT-MON-RPS

## **ANT-2.4-WRT-MON-ccc** 

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ANT-2.4-WRT-MON-SMA Shown<br>**----- End of picture text -----**<br>


## **2.4 GHz WiFi External Panel-Mount Antenna** 

The ANT-2.4-WRT-MON is a low-profile, panel-mount monopole antenna designed for 2.4 GHz WiFi/WLAN and ISM applications including Bluetooth® and ZigBee®. The ANT-2.4-WRT-MON antenna’s compact size allows it to be mounted securely in enclosures requiring added security. The ANT-2.4-WRT-MON antenna’s compact profile and rugged dome reduces the likelihood of accidental damage versus a whip antenna. The antenna connects to the radio via SMA plug (male pin), RP-SMA plug (female socket) MHF1/ U.FL-type plug (female socket) or MHF4 plug (female socket) on 216 mm (8.5 in.) coaxial cable. 

## **FEATURES** 

- Performance at 2.4 GHz to 2.5 GHz 

   - VSWR: ≤ 1.7 

   - Peak Gain: 2.7 dBi 

      - Efficiency: 82% 

   - 

- Low-profile 

   - Height: 27.0 mm (1.06 in) 

- Mounts permanently with pressure sensitive adhesive ring and provided hex nut 

## **APPLICATIONS** 

- Single-band WiFi/WLAN – 802.11b/g 

- 2.4 GHz ISM applications – Bluetooth® 

   - ZigBee® 

   - IEEE 802.15.4 

- Internet of Things (IoT) devices 

- Smart Home networking 

   - Sensing and remote monitoring 

   - Security 

## **ORDERING INFORMATION** 

|Part Number|Description|
|---|---|
|ANT-2.4-WRT-MON-RPS|Antenna with 216 mm (8.5 in) of RG-174 coaxial cable with an RP-SMA plug<br>(female socket) connector|
|ANT-2.4-WRT-MON-SMA|Antenna with 216 mm (8.5 in) of RG-174 coaxial cable with an SMA plug (male pin)<br>connector|
|ANT-2.4-WRT-MON-UFL|Antenna with 216 mm (8.5 in) of 1.32 mm coaxial cable with an MHF1/U.FL-type plug<br>(female socket) connector|
|ANT-2.4-WRT-MON-MHF4|Antenna with 216 mm (8.5 in) of 1.13 mm coaxial cable with an MHF4-type plug (female<br>socket) connector|



Available from Linx Technologies and select distributors and representatives. 

DATA AND DEVICES / ANT-2.4-WRT-MON-CCC 

## **TABLE 1. ELECTRICAL SPECIFICATIONS** 

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ANT-2.4-WRT-MON 2.4 GHz<br>Frequency Range 2.4 GHz to 2.5 GHz<br>VSWR (max.) 1.7<br>Peak Gain (dBi) 2.7<br>Average Gain (dBi) -1.0<br>Efficiency (%) 82<br>Polarization Linear Radiation Omnidirectional<br>Impedance 50 Ω Max Power 5 W<br>Wavelength 1/4-wave Electrical Type Monopole<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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Parameter Value<br>Operating Temp. Range -40 °C to +85 °C<br>Weight -MHF4 = 13.8 g (0.49 oz), -RPS & -SMA = 18.9 g (0.66 oz), -UFL = 13.9 g (0.49 oz)<br>MHF4 plug (female socket) on 1.13 mm coaxial cable<br>RP-SMA plug (female socket) on RG-174 coaxial cable<br>Connection<br>SMA plug (male pin) on RG-174 coaxial cable<br>MHF1/U.FL-type plug (female socket) on 1.32 mm coaxial cable<br>Coaxial Cable, minimum inside<br>RG-174: 10.2 mm (0.40 in), 1.13 mm: 5.0 mm (0.20 in), 1.32 mm: 6.0 mm (0.24 in)<br>bend radius<br>Dimensions Height: 27.0 mm (1.06 in), Diameter: 19.0 mm (0.75 in)<br>**----- End of picture text -----**<br>


## **PRODUCT INFORMATION** 

The ANT-2.4-WRT-MON series antenna is individually sealed in a clear plastic bag. Individual packages are packed in a bag of 100 pcs. Distribution channels may offer alternative packaging options. 

## **PRODUCT DIMENSIONS** 

Figure 1 provides dimensions for the ANT-2.4-WRT-MON series antenna. 

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Adhesive Ring Ø19.0 mm<br>(0.75 in)<br>7/16-28 UNEF<br>Hex Nut<br>-SMA, -RPS<br>-UFL<br>8.0 mm<br>(0.31 in)<br>27.0 mm<br>-MHF4<br>(1.06 in)<br>216.0 mm (8.5 in)<br>**----- End of picture text -----**<br>


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Figure 1: ANT-2.4-WRT-MON Antenna Dimensions<br>**----- End of picture text -----**<br>


DATA AND DEVICES / ANT-2.4-WRT-MON-CCC 

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## **RECOMMENDED MOUNTING** 

The recommended enclosure mounting dimensions are shown in Figure 2. The ANT-2.4-WRT-MON 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 hex nut which should be tightened to 3.0 kgf/cm (5 in/lbs) max. The recommended maximum enclosure wall thickness is 3.18 mm (0.125 in). 

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


Figure 2. ANT-2.4-WRT-MON Series Antenna Recommended Enclosure Mounting Dimensions 

## **GROUND PLANE** 

1/4-Wave monopole antennas require an associated ground plane counterpoise for proper operation. The size and location of the ground plane relative to the antenna will affect the overall performance of the antenna in the final design. When used in conjunction with a ground plane smaller than that used to tune the antenna, the center frequency typically will shift higher in frequency and the bandwidth will decrease. The proximity of other circuit elements and packaging near the antenna will also affect the final performance. For further discussion and guidance on the importance of the ground plane counterpoise, please refer to Linx Application Note, _AN-00501: Understanding Antenna Specifications and Operation._ 

## **ANTENNA ORIENTATION** 

The ANT-2.4-WRT-MON antenna is characterized with the antenna at the center of a 102 mm x 102 mm ground plane as shown in Figure 3 

Figure 3. ANT-2.4-WRT-MON Test Orientation 

DATA AND DEVICES / ANT-2.4-WRT-MON-CCC 

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## **VSWR** 

Figure 4 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>2400 2410 2420 2430 2440 2450 2460 2470 2480 2490 2500<br>Frequency (MHz)<br>Figure 4. ANT-2.4-WRT-MON VSWR<br>Return loss (Figure 5), represents the loss in power at the antenna due to reflected signals. Like VSWR, a lower return<br>loss value indicates better antenna performance at a given frequency<br>0<br>-5<br>-10<br>-15<br>-20<br>-25<br>2400 2410 2420 2430 2440 2450 2460 2470 2480 2490 2500<br>Frequency (MHz)<br>2400 2500<br>VSWR<br>Reflected Power (%)<br>2400 2500<br>Return Loss (dB)<br>**----- End of picture text -----**<br>


## **RETURN LOSS** 

Return loss (Figure 5), 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 

Figure 5. ANT-2.4-WRT-MON Return Loss 

DATA AND DEVICES / ANT-2.4-WRT-MON-CCC 

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## **PEAK GAIN** 

The peak gain across the antenna bandwidth is shown in Figure 6. 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>2400 2410 2420 2430 2440 2450 2460 2470 2480 2490 2500<br>Frequency (MHz)<br>Figure 6. ANT-2.4-WRT-MON Peak Gain<br>2400 2500<br>Peak Gain (dBi)<br>**----- End of picture text -----**<br>


## **AVERAGE GAIN** 

Average gain (Figure 7), 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>2400 2410 2420 2430 2440 2450 2460 2470 2480 2490 2500<br>Frequency (MHz)<br>Figure 7. ANT-2.4-WRT-MON Antenna Average Gain<br>2400 2500<br>Average Gain (dBi)<br>**----- End of picture text -----**<br>


DATA AND DEVICES / ANT-2.4-WRT-MON-CCC 

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## **RADIATION EFFICIENCY** 

Radiation efficiency (Figure 8), 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>2400 2410 2420 2430 2440 2450 2460 2470 2480 2490 2500<br>Frequency (MHz)<br>2400 2500<br>Efficiency (%)<br>**----- End of picture text -----**<br>


Figure 8. ANT-2.4-WRT-MON Antenna Radiation Efficiency 

## **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 9 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. 

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


DATA AND DEVICES / ANT-2.4-WRT-MON-CCC 

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## **2400 MHZ TO 2500 MHZ (2450 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>26 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 2400 MHz<br>21 20 19 18 17 21 20 19 18 17 21 20 19 18 17 2450 MHz2500 MHz<br>XZ-Plane Gain YZ-Plane Gain XY-Plane Gain<br>**----- End of picture text -----**<br>


Figure 9. ANT-2.4-WRT-MON Radiation Patterns 

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**09/22   Original** 

DATA AND DEVICES / ANT-2.4-WRT-MON-CCC