ANT-916-PW-QW-UFL

ANT-916-PW-QW-UFL Datasheet

ANT-916-PW-QW

Part	Datasheet
ANT-916-PW-QW-UFL	ANT-916-PW-QW-UFL (pdf)

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ANT-916-PW-QW Data Sheet Product Description Designed for permanent attachment, PW Series ¼-wave whips give outstanding performance in a rugged and cost-effective package. The antenna is attached by placing its base through a ¼" mm hole in the product and securing it with a nut or by threading it into a PEM-style insert. The antenna is fed through the base with 216 mm of coax cable. Straight-cut RG-174 allows the addition of any 50-ohm RF connector or allows the cable to be soldered directly to the PCB, saving the cost of the connector. It is also available with mm coax cable terminated with a U.FL / MHF compatible connector. This saves the labor of adding a connector while using one that is small enough to fit through the antenna’s mounting hole. Custom lengths and terminations are available by special order. Straight Cut or U.FL I-PEX silhouette shown in shadow • Low cost • Outstanding performance • Omni-directional pattern • Wide bandwidth • Flexible main shaft • Rugged & weatherized • Integral cm RG-174 coax cable • Use with plastic* or metal enclosures * Requires proximity ground plane Electrical Specifications Center Frequency: 916MHz Bandwidth: Wavelength ¼-wave VSWR: typical at center Peak Gain: 1.8dBi Impedance 50-ohms Connection: Straight-cut or U.FL/MHF Cable: cm RG-174 coax or mm coax U.FL Oper. Temp. Range to +90°C Electrical specifications and plots measured on cm x cm x reference ground plane 28 TPI End View Ordering Information ANT-916-PW-QW with straight cut RG-174 coax ANT-916-PW-QW-UFL U.FL/MHF compatible connector Counterpoise Quarter-wave or 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. VSWR Graph VSWR 3:1 Reflected Power 25% 1:1 816MHz 916MHz 0% 1016MHz What is VSWR? The Voltage Standing Wave Ratio VSWR is a measurement of how well an antenna is matched to a source impedance, typically 50-ohms. It is calculated by measuring the voltage wave that is headed toward the load versus the voltage wave that is reflected back from the load. A perfect match will have a VSWR of The higher the first number, the worse the match, and the more inefficient the system. Since a perfect match cannot ever be obtained, some benchmark for performance needs to be set. In the case of antenna VSWR, this is usually At this point, of the energy sent to the antenna by the transmitter is radiated into free space and is either reflected back into the source or lost as heat on the structure of the antenna. In the other direction, of the energy recovered by the antenna is transferred into the receiver. As a side note, since the “:1” is always implied, many data sheets will remove it and just display the first number. How to Read a VSWR Graph VSWR is usually displayed graphically versus frequency. The lowest point on the graph is the antenna’s operational center frequency. In most cases, this will be different than the designed center frequency due to fabrication tolerances. The VSWR at that point denotes how close to 50-ohms the antenna gets. Linx specifies the recommended bandwidth as the range where the typical antenna VSWR is less than Data Sheet ANT-916-PW-QW

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ANT-916-PW-QW

Data Sheet

Product Description

Designed for permanent attachment, PW Series ¼-wave whips give outstanding performance in a rugged and cost-effective package. The antenna is attached by placing its base through a ¼" mm hole in the product and securing it with a nut or by threading it into a PEM-style insert. The antenna is fed through the base with 216 mm of coax cable. Straight-cut RG-174 allows the addition of any 50-ohm RF connector or allows the cable to be soldered directly to the PCB, saving the cost of the connector. It is also available with mm coax cable terminated with a U.FL / MHF compatible connector. This saves the labor of adding a connector while using one that is small enough to fit through the antenna’s mounting hole. Custom lengths and terminations are available by special order.

Straight Cut or U.FL

I-PEX silhouette shown in shadow
• Low cost
• Outstanding performance
• Omni-directional pattern
• Wide bandwidth
• Flexible main shaft
• Rugged & weatherized
• Integral cm RG-174 coax cable
• Use with plastic* or metal enclosures
* Requires proximity ground plane

Electrical Specifications

Center Frequency:
916MHz

Bandwidth:

Wavelength ¼-wave

VSWR:
typical at center

Peak Gain:
1.8dBi

Impedance 50-ohms

Connection:

Straight-cut or U.FL/MHF

Cable:
cm RG-174 coax
or mm coax U.FL

Oper. Temp. Range to +90°C

Electrical specifications and plots measured on cm x cm x reference ground plane
28 TPI

End View
Ordering Information

ANT-916-PW-QW with straight cut RG-174 coax ANT-916-PW-QW-UFL U.FL/MHF compatible connector

Counterpoise

Quarter-wave or 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.

VSWR Graph

VSWR 3:1

Reflected Power 25%
1:1 816MHz
916MHz
0% 1016MHz

What is VSWR? The Voltage Standing Wave Ratio VSWR is a measurement of how well an antenna is matched to a source impedance, typically 50-ohms. It is calculated by measuring the voltage wave that is headed toward the load versus the voltage wave that is reflected back from the load. A perfect match will have a VSWR of The higher the first number, the worse the match, and the more inefficient the system. Since a perfect match cannot ever be obtained, some benchmark for performance needs to be set. In the case of antenna VSWR, this is usually At this point, of the energy sent to the antenna by the transmitter is radiated into free space and is either reflected back into the source or lost as heat on the structure of the antenna. In the other direction, of the energy recovered by the antenna is transferred into the receiver. As a side note, since the “:1” is always implied, many data sheets will remove it and just display the first number.

How to Read a VSWR Graph VSWR is usually displayed graphically versus frequency. The lowest point on the graph is the antenna’s operational center frequency. In most cases, this will be different than the designed center frequency due to fabrication tolerances. The VSWR at that point denotes how close to 50-ohms the antenna gets. Linx specifies the recommended bandwidth as the range where the typical antenna VSWR is less than

Data Sheet ANT-916-PW-QW

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Datasheet ID: ANT-916-PW-QW-UFL 645758