Linx ANT-DB1-LPD-125 Panel Mount Dipole WiFi-WLAN Antenna Owner’s Manual

**Linx ANT-DB1-LPD-125 Panel Mount Dipole WiFi-WLAN Antenna Owner’s Manual

**

The ANT-DB1-LPD-125 (LPD) is a panel-mount dipole antenna for

WiFi/WLAN/U-NII 2.4 GHz and 5 GHz frequency band applications

The snap-in panel mount provides for easy and secure installation and the hinged whip with 3-position detent allows
for optimal antenna positioning.

Connection is made to the radio via a 125 mm long, 1.13 mm coaxial cable terminated in an MHF1/U.FL-compatible
plug connector.

FEATURES

• 2.4 GHz
  • VSWR: ≤ 4.5
  • Peak Gain: 5.5 dBi
  • Efficiency: 70%
• 2496 MHz to 2690 MHz (LTE 7, 41)
  • VSWR: ≤ 3.1
  • Peak Gain: 5.0 dBi
  • Efficiency: 59%
• Compact, low-profile
  • 64 mm x 17 mm x 0.2 mm
• MHF1/U.FL-type plug (female socket) on 1.13 mm coaxial cable
• Flexible to fit in challenging enclosures
• Adhesive backing permanently adheres to  non-metal enclosures using 3M 467MP™/200MPadhesive

APPLICATIONS

• Single- and dual-band WiFi / WLAN / 802.11
  • WiFi 4, WiFi 5
• U-NII and ISM applications
• 2.4 GHz applications
  • Bluetooth® and ZigBee®
• Smart Home networking
• Sensing and remote monitoring
• Internet of Things (IoT) devices
• Gateways

ORDERING INFORMATION

in) 1.13 mm coax cable

ELECTRICAL SPECIFICATIONS

Electrical specifications and plots measured in Bent-90 configuration.

PACKAGING INFORMATION
The ANT-DB1-LPD-125 antennas are individually sealed in a clear plastic bag. Individual packages are packed in a bag of 50, seven bags of 50 to a box and twenty boxes to a carton. Distribution channels may offer alternative packaging options.

PRODUCT DIMENSIONS
Figure 1 shows the overall dimensions and mounting information for the LPD antenna. The antenna’s hinged whip can be tilted 90 degrees and has detents at 0, 45 and 90 degrees.

ANTENNA ORIENTATION – BENT 90 DEGREES
The charts on the following pages represent data taken with the antenna Bent-90 degrees, as shown in Figure

Figure 2: LPD Antenna, Bent 90 Degrees (Bent-90)

VSWR
Figure 3 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.

RETURN LOSS
Return loss (Figure 4), 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

PEAK GAIN
The peak gain across the antenna bandwidth is shown in Figure 5. 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 patter

AVERAGE GAIN
Average gain (Figure 6), is the average of all antenna gain in 3-dimensional space at each frequency, providing an indication of overall performance without expressing antenna directionality

RADIATION EFFICIENCY
Radiation efficiency (Figure 7), 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.

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 Bent-90 orientation are shown in Figure 8 using polar plots covering 360 degrees. The antenna graphic 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 – BENT-90 DEGREES

2400 MHZ TO 2490 MHZ (2450 MHZ)

5150 MHZ TO 5850 MHZ (5500 MHZ)

ANTENNA ORIENTATION – STRAIGHT
The charts on the following pages represent data taken with the antenna oriented straight, as shown in Figure 9.

VSWR
Figure 10 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.

RETURN LOSS
Return loss (Figure 11), 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

PEAK GAIN
The peak gain across the antenna bandwidth is shown in Figure 12. Peak gain represents the maximum antenna input power concentration across 3-dimensional spac

AVERAGE GAIN
Average gain (Figure 13), is the average of all antenna gain in 3-dimensional space at each frequency, providing an indication of overall performance without expressing antenna directionality

RADIATION EFFICIENCY
Radiation efficiency (Figure 14), 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.

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 straight orientation are shown in Figure 15 using polar plots covering 360 degrees. The antenna graphic 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 deta

RADIATION PATTERNS – STRAIGHT

2400 MHZ TO 2490 MHZ (2450 MHZ)

5150 MHZ TO 5850 MHZ (5500 MHZ)

ANTENNA DEFINITIONS AND USEFUL FORMULAS
VSWR – Voltage Standing Wave Ratio. VSWR is a unitless ratio that describes the power reflected from the antenna back to the radio. A lower VSWR value indicates better antenna performance at a given frequency. VSWR is easily derived from Return Loss.

Return Loss – Return loss represents the loss in power at the antenna due to reflected signals, measured in decibels. A lower return loss value indicates better antenna performance at a given frequency. Return Loss is easily derived from VSWR.

Efficiency (η) – The total power radiated from an antenna divided by the input power at the feed point of the antenna as a percentage
Total Radiated Efficiency – (TRE) The total efficiency of an antenna solution comprising the radiation efficiency of the antenna and the transmitted (forward) efficiency from the transmitted

Gain – The ratio of an antenna’s efficiency in a given direction (G) to the power produced by a theoretical lossless (100% efficient) isotropic antenna. The gain of an antenna is almost always expressed in decibels.

Peak Gain – The highest antenna gain across all directions for a given frequency range. A directional antenna will have a very high peak gain compared to average gain
Average Gain – The average gain across all directions for a given frequency range.
Maximum Power – The maximum signal power which may be applied to an antenna feed point, typically measured in watts (W)
Reflected Power – A portion of the forward power reflected back toward the amplifier due to a mismatch at the antenna port

decibel (dB) – A logarithmic unit of measure of the power of an electrical signal.
ecibel isotropic (dBi) – A comparative measure in decibels between an antenna under test and an isotropic radiator. decibel relative to a dipole (dBd) – A comparative measure in decibels between an antenna under test and an ideal half-wave dipole.
Dipole – An ideal dipole comprises a straight electrical conductor measuring 1/2 wavelength from end to end
connected at the center to a feed point for the radio
Isotropic Radiator – A theoretical antenna which radiates energy equally in all directions as a perfect sphere.
Omnidirectional – Term describing an antenna radiation pattern that is uniform in all directions. An isotropic antenna is the theoretical perfect omnidirectional antenna. An ideal dipole antenna has a donut-shaped radiation pattern and other practical antenna implementations will have less perfect but generally omnidirectional radiation patterns which are typically plotted on three axes.

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