ANT-2.4-WRT-UFL

## **ANT-2.4-WRT-CCC** 

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

The ANT-2.4-WRT is a low-profile, panel-mount dipole antenna designed for 2.4 GHz ISM frequency band applications such as Bluetooth® and ZigBee®. 

The ANT-2.4-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-2.4-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-2.4-WRT antenna are: SMA plug (male pin), RP-SMA plug (female socket), MHF1/U.FL-type plug (female socket), or MHF4-type plug (female socket). 

## **FEATURES** 

- Performance at 2.4 GHz 

   - VSWR: ≤ 1.5 

   - Peak Gain: 9.1 dBi 

   - Efficiency: 66% 

- 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** 

- Single-band WiFi/WLAN/802.11 

   - WiFi 4 

- 2.4 GHz ISM applications 

   - Bluetooth® 

   - ZigBee® 

- U-NII and ISM applications 

- Internet of Things (IoT) devices 

- Smart Home networking 

• Sensing and remote monitoring 

## **ORDERING INFORMATION** 

Part Number Description ~~hhee~~ | ANT-2.4-WRT-UFL-100 | Antenna, 100 mm (3.94 in) of 1.32 mm coaxial cable, MHF1/U.FL-type plug (female socket) | ANT-2.4-WRT-UFL-150 Antenna, 150 mm (5.91 in) of 1.32 mm coaxial cable, MHF1/U.FL-type plug (female socket) ~~a~~ | ANT-2.4-WRT-UFL | Antenna, 216 mm (8.50 in) of 1.32 mm coaxial cable, MHF1/U.FL-type plug (female socket) | ANT-2.4-WRT-MHF4 Antenna, 216 mm (8.50 in) of 1.13 mm coaxial cable, MHF4-type plug (female socket) ~~a~~ | ANT-2.4-WRT-RPS | Antenna, 216 mm (8.50 in) of RG-174 coaxial cable, RP-SMA plug (female socket) | ANT-2.4-WRT-SMA-150 Antenna, 150 mm (5.91 in) of RG-174 coaxial cable, SMA plug (male pin) ~~a~~ ANT-2.4-WRT-SMA Antenna, 216 mm (8.50 in) of RG-174 coaxial cable, SMA plug (male pin) ~~ee~~ 

Available from Linx Technologies and select distributors and representatives. 

DATA AND DEVICES / ANT-2.4-WRT-CCC 

## **TABLE 1. ELECTRICAL SPECIFICATIONS** 

ANT-2.4-WRT 2.4 GHz Frequency Range 2.4 GHz to 2.5 GHz ~~|~~ VSWR (max) 1.5 ~~|~~ Peak Gain (dBi) | 9.1 | Average Gain (dBi) -2.0 Efficiency (%) 66 

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** 

Parameter Value Polarization Linear Radiation Omnidirectional Max Power 5W ~~| |~~ Wavelength | 1/2-wave | Electrical Type Dipole Impedance 50 Ω ~~|~~ Operating Temp. Range -40 °C to +90 °C ~~|~~ Dimensions | Height: 10.0 mm (0.40 in), Diameter: 19.0 mm (0.75 in) | 

|Part Number|Connection|Coaxial Cable,<br>minimum inside bend<br>radius|Weight|
|---|---|---|---|
|ANT-2.4-WRT-UFL|MHF1/U.FL-type plug|1.32 mm: 6.0 mm (0.24 in)|100 mm = 4.6 g (0.16 oz)<br>150 mm = 4.9 g (0.17 oz)<br>216 mm = 5.2 g (0.18 oz)|
|ANT-2.4-WRT-MHF4|MHF4-type plug|1.13 mm: 5.0 mm (0.20 in)|216 mm = 5.1 g (0.18 oz)|
|ANT-2.4-WRT-RPS<br>|<br>||RP-SMA plug<br>|<br>||RG-174: 10.2 mm (0.40 in)<br>|<br>||216 mm = 7.0 g (0.25 oz)<br>|<br>||
|ANT-2.4-WRT-SMA|SMA plug|RG-174: 10.2 mm (0.40 in)|150 mm = 6.1 g (0.22 oz)<br>216 mm = 7.0 g (0.25 oz)|



## **PACKAGING INFORMATION** 

The ANT-2.4-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. 

## **PACKAGING INFORMATION** 

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

Figure 1. ANT-2.4-WRT Series Antenna Dimensions 

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## **RECOMMENDED MOUNTING** 

The recommended enclosure mounting dimensions are shown in Figure 2. The ANT-2.4-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). 

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

## **ANTENNA ORIENTATION** 

The ANT-2.4-WRT 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 Center of Ground Plane<br>**----- End of picture text -----**<br>


Figure 3. ANT-2.4-WRT Series Antenna Test Orientations 

## **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-2.4-WRT in Free Space, No Ground Plane 

DATA AND DEVICES / ANT-2.4-WRT-CCC 

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## **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>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>2400 2500<br>VSWR<br>Reflected Power (%)<br>**----- End of picture text -----**<br>


Figure 5. ANT-2.4-WRT VSWR, Free Space 

## **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>2400 2410 2420 2430 2440 2450 2460 2470 2480 2490 2500<br>Frequency (MHz)<br>2400 2500<br>Return Loss (dB)<br>**----- End of picture text -----**<br>


Figure 6. ANT-2.4-WRT Return Loss, Free Space 

DATA AND DEVICES / ANT-2.4-WRT-CCC 

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## **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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10<br>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>2400 2500<br>Peak Gain (dBi)<br>**----- End of picture text -----**<br>


Figure 7. ANT-2.4-WRT Peak Gain, Free Space 

## **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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10<br>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 8. ANT-2.4-WRT Antenna Average Gain, Free Space<br>2400 2500<br>Average Gain (dBi)<br>**----- End of picture text -----**<br>


DATA AND DEVICES / ANT-2.4-WRT-CCC 

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## **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>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 9. ANT-2.4-WRT Series Antenna Radiation Efficiency, Free Space 

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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 for a free space orientation 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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**----- Start of picture text -----**<br>
XZ-Plane Gain YZ-Plane Gain XY-Plane Gain<br>**----- End of picture text -----**<br>


## **2400 MHz TO 2500 MHz (2450 MHz)** 

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**----- Start of picture text -----**<br>
34 35 36 105 1 2 3 4 34 35 36 105 1 2 3 4 34 35 36 105 1 2 3 4<br>33 Tao -50 5 33 oo -50 5 33 na -50 5<br>32 ASI -10 6 32 JO gc -10 SNS 6 32 Ge -10 oS 6<br>31 Te AEN -15-20 7 31 Lo A NE -15-20 oa Ww 7 31 VGE -15-20 TOR ASA 7<br>-25 -25 -25<br>30 L/ wen -30 \ 8 30 J) EE = -30 sO SY \\ 8 30 // ff Vege -30 ae ING \ \ 8<br>29 L/L/SPAXSVALL ame -35-40  SxSTS WYef SX \\ 9 29 L/// lf KLity/ -35-40 ao—anna \\\\\ \ \\\ \\ 9 29 LI[/f/gL  fL/S,/Ko -35-40 TSKOOAN  \VV \ \\Vy\ \ 9<br>PHL TFS SOIR -45  OY) ILL ps fy ie -45  EX \\\¥\ \ \ LIT [Sy gitl -45 V\\\\\ \ \ |<br>28 -50 10 28 -50 10 28 -50 10<br>ee | PALS WWE OTIARAT YT | LEILA BS nt eneeeeeec oc ceeenerin<br>27 11 27 11 27 11<br>\ eee CSeeeees oe ne Weeeneecc creer renr aE VA VV Ra TTT La<br>26 LEY\\*| \ W\HATESWA  \TALLYK STO.  amt \Oe.ALTTT Vay HHL JtTT+ | 12 26 VVVV\ WWWAL\\VAV VK A KLEQOSKS aeaV aaNee 12 26 \\\RA\AKARQRS\ \ AADKAS)J) Sp/ 4p)| / / 12<br>Lent 25 \\ L\ SST 7~AW_/ 13 | 25 \ \ q \ \\ ~ = AS { / /MM // / / 13 25 \ \ WesYooST a LS. WYfGy) // J 13<br>\tae\, SOTA y~/ \\ SO ee ><br>\\ 24 \Whec\\ NimST ea& / fel. 14 / / \ thes 24 LY \ “SXLTweOTEUeth 7)VS 14  // \\ 24 \O\  IAN XSSx LoeLEweeseu4 Lf( 14<br>\\\ 23 NNINA 22 KSQeneeSPECS SC 16 Yo 15 /// \i 23 NEN 22 >Ssapet2A a FStiSeee B/, 16 15 ( QS 23 a 22 SoSNDSONE=aO—EBBeee, 16 oa V4 15 - 2400 MHz<br>21 20 SS 19  OL 18 17 ee 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 10. ANT-2.4-WRT Antenna Radiation Patterns, Free Space 

DATA AND DEVICES / ANT-2.4-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. 

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**----- Start of picture text -----**<br>
Figure 11. ANT-2.4-WRT Series Antenna at Center of Ground Plane<br>**----- End of picture text -----**<br>


## **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. 

**==> picture [457 x 228] intentionally omitted <==**

**----- Start of picture text -----**<br>
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>2400 2500<br>VSWR<br>Reflected Power (%)<br>**----- End of picture text -----**<br>


Figure 12. ANT-2.4-WRT Antenna VSWR at Center of Ground Plane 

DATA AND DEVICES / ANT-2.4-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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**----- Start of picture text -----**<br>
0<br>-2<br>-4<br>-6<br>-8<br>-10<br>-12<br>-14<br>-16<br>-18<br>-20<br>2400 2410 2420 2430 2440 2450 2460 2470 2480 2490 2500<br>Frequency (MHz)<br>2400 2500<br>Return Loss (dB)<br>**----- End of picture text -----**<br>


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**----- Start of picture text -----**<br>
Figure 13 ANT-2.4-WRT Return Loss at Center of Ground Plane<br>**----- End of picture text -----**<br>


## **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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**----- Start of picture text -----**<br>
10<br>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 14. AANT-2.4-WRT Peak Gain at Center of Ground Plane<br>2400 2500<br>Peak Gain (dBi)<br>**----- End of picture text -----**<br>


DATA AND DEVICES / ANT-2.4-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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**----- Start of picture text -----**<br>
10<br>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 15. ANT-2.4-WRT Antenna Average Gain at Center of Ground Plane<br>2400 2500<br>Average Gain (dBi)<br>**----- End of picture text -----**<br>


## **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>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 16. ANT-2.4-WRT Antenna Radiation Efficiency at Center of Ground Plane 

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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 - CENTER OF GROUND PLANE** 

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


YZ-Plane Gain 

XY-Plane Gain 

## **2400 MHz TO 2500 MHz (2450 MHz)** 

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**----- Start of picture text -----**<br>
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 TRGos SannnneSES -40-45 ~~: 9 29 : ‘TL,; ‘fs 1,y SecoS SRY -40-45 KAY \\\ \ \ 9 29 a/ / ef /.aeVas ieTROY -40-45 1SS \ \enh\ \Ee\ 9<br>28 -50 10 28 -50 10 28 -50 10<br>LL OMT A “\ \\ LT RY A RELL | |<br>27 11 27 11 27 11<br>26 12 26 12 26 12<br>25 A) 13 25 13 25 A) 13<br>24 14 24 14 24 14<br>23 ‘ OT Wie 15 23 \ ae wa 7 15 23 15<br>22 16 22 16 22 SS ee 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 17. ANT-410-WRT Radiation Patterns, Center of Ground Plane 

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DATA AND DEVICES / ANT-2.4-WRT-CCC