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HomeProductsRF/IF and RFIDRF AntennasANT1818B008R1516S
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ANT1818B008R1516S - Pulse Electronics

Manufacturer Part Number
ANT1818B008R1516S
Manufacturer
Pulse Electronics
Allelco Part Number
98D-ANT1818B008R1516S
Warranty
1 Year Allelco Warranty - Find out more
Stock Status:
43,605 pcs available, New & Original
Parts Description
ANTENNA PATCH GPS/GLO CP+PIN
Package
Tape & Reel (TR)
Data sheet
ANT1818B008R151.pdf

Environmental Information

Pulse Larson REACH.pdf
RoHs Status
ROHS3 Compliant
Compare
Our certification
In stock: 43605
  • Unit Price: $1.208
  • Subtotal: $0.00

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Quantity Unit Price Ext. Price
1+ $1.208 $1.21
350+ $0.468 $163.80
700+ $0.451 $315.70
1050+ $0.443 $465.15
The above prices does not include taxes and freight rates, which will be calculated on the order pages.

Specifications

ANT1818B008R1516S Tech Specifications
Pulse Electronics - ANT1818B008R1516S technical specifications, attributes, parameters and parts with similar specifications to Pulse Electronics - ANT1818B008R1516S

Product Attribute Attribute Value
Manufacturer Pulse Electronics
Series 1818
Product Attribute Attribute Value
Package Tape & Reel (TR)
Base Product Number ANT1818

Environmental & Export Classifications

ATTRIBUTE DESCRIPTION
RoHs Status ROHS3 Compliant
Moisture Sensitivity Level (MSL) 1 (Unlimited)
REACH Status REACH Unaffected
ECCN 7A994
HTSUS 8529.10.4040

Frequently Asked Questions(FAQ)

How does the ANT1818B008R1516S antenna perform in GPS and GLONASS systems, and what are its key electrical characteristics for GNSS integration?
The ANT1818B008R1516S is a circularly polarized patch antenna designed to support both GPS L1 (1575.42 MHz) and GLONASS L1 (1602 MHz) frequency bands, ensuring reliable satellite signal reception in dual-GNSS applications. Its center frequency of 1575 MHz aligns closely with standard GPS signals, while its 1.5 dBi gain provides adequate signal amplification for indoor or urban environments where multipath effects are common. The antenna exhibits a typical axial ratio below 3 dB across the operating band, which is critical for maintaining polarization purity and minimizing signal loss due to misalignment between the receiver and satellite antennas. With an impedance of 50 ohms, it interfaces seamlessly with most RF front-ends without requiring complex matching networks. This makes the ANT1818B008R1516S suitable for compact IoT devices, wearables, and automotive navigation systems where space is constrained and performance consistency is essential.
What design considerations should be taken into account when integrating the ANT1818B008R1516S into a PCB layout to ensure optimal radiation efficiency?
Proper placement of the ANT1818B008R1516S relative to the ground plane is crucial for maintaining its intended radiation pattern and gain. It must be mounted on a solid ground plane with minimal obstructions within a 1/4 wavelength radius at 1.575 GHz—approximately 3.8 cm—to avoid detuning. The antenna’s feed pin should connect directly to the RF trace using controlled impedance routing, avoiding sharp bends or vias near the feed point that could introduce parasitic inductance. Additionally, keep adjacent components, especially high-current or switching regulators, at least 10 mm away to reduce electromagnetic interference. A well-designed ground plane beneath the antenna enhances bandwidth and reduces losses, particularly important in compact designs where surface area is limited. Failure to adhere to these guidelines can degrade axial ratio and increase return loss, leading to reduced positioning accuracy in GNSS applications.
Can the ANT1818B008R1516S operate reliably in harsh environmental conditions such as extreme temperatures or high humidity?
Yes, the ANT1818B008R1516S is built to withstand a wide range of environmental conditions, making it suitable for outdoor and industrial deployments. Operating from -40°C to +85°C ensures functionality in polar regions and hot climates alike. The antenna’s MSL rating of 1 indicates no sensitivity to moisture during reflow soldering, and its RoHS3 compliance confirms adherence to modern environmental standards without compromising durability. While the antenna itself is not fully sealed, Pulse Electronics typically applies protective coatings or uses materials resistant to oxidation and UV degradation. However, long-term exposure to salt spray or chemical pollutants may still affect performance if mechanical enclosures are not used. For mission-critical systems, conformal coating on the surrounding circuitry can further enhance reliability without altering the antenna’s radiation characteristics.
How does the ANT1818B008R1516S compare to chip antennas for space-constrained GNSS applications?
Compared to chip antennas like those from Johanson or Taoglas in similar form factors, the ANT1818B008R1516S offers higher gain (1.5 dBi vs. typically <0.5 dBi) and better axial ratio due to its larger radiating element. Chip antennas often suffer from limited bandwidth and poor performance under nearby metallic structures, whereas the patch design of the ANT1818B008R1516S provides more predictable behavior when mounted correctly. However, chip antennas consume less board real estate and can be surface-mounted without pins, simplifying assembly. The ANT1818B008R1516S requires additional clearance and height due to its pin configuration, which may not suit ultra-thin devices. In terms of cost, both types are competitive for medium-volume production, but the choice depends on trade-offs between size, orientation flexibility, and signal strength. For applications requiring omnidirectional coverage and moderate sensitivity, the ANT1818B008R1516S remains a strong candidate despite its footprint.
Is the ANT1818B008R1516S suitable for use with Galileo or BeiDou constellations, or is it limited to GPS and GLONASS?
The ANT1818B008R1516S is optimized primarily for GPS L1 and GLONASS L1 bands, with a bandwidth centered around 1575 MHz. While it may partially receive Galileo E1 (1575.42 MHz) signals due to frequency overlap, its performance on BeiDou B1I (1561.098 MHz) is significantly degraded because this signal falls outside its nominal operating range. BeiDou B1I operates approximately 14 MHz lower than the antenna’s center frequency, resulting in increased insertion loss and poor axial ratio. If multi-constellation support including BeiDou is required, a broader-bandwidth antenna or a separate dedicated antenna would be necessary. Therefore, while the ANT1818B008R1516S supports enhanced positioning through dual-frequency GNSS (GPS+GLONASS), it lacks full global compatibility and should not be assumed to deliver consistent performance across all major satellite systems.
What are the implications of mounting the ANT1818B008R1516S near a metal surface, and how can detuning be mitigated?
Mounting the ANT1818B008R1516S adjacent to a large metal surface causes detuning by altering its effective ground plane and shifting resonant frequency downward. This results in elevated return loss (e.g., rising from -20 dB to -10 dB) and reduced gain, potentially dropping below 1.0 dBi. To mitigate this, maintain a minimum separation of 5–10 mm from any conductive material, and consider using a low-permittivity spacer or foam backing. Alternatively, redesigning the ground plane to isolate the antenna region can restore performance. Simulation tools like HFSS or CST can model such interactions pre-manufacturing, but empirical testing is often required due to variations in enclosure materials. In mobile devices housed in aluminum cases, placing the antenna at a corner or edge with strategic cutouts helps preserve radiation efficiency and maintains acceptable axial ratio for accurate satellite tracking.
Does the ANT1818B008R1516S require external matching circuitry, and what is its input impedance behavior across temperature?
The ANT1818B008R1516S has a nominal input impedance of 50 ohms, which matches standard RF systems, and typically does not require external matching networks when properly laid out on a PCB. However, slight impedance deviations (±5–10 ohms) can occur due to manufacturing tolerances or proximity effects. Across the specified temperature range (-40°C to +85°C), the antenna’s impedance shifts minimally, preserving VSWR below 2:1 in most practical configurations. This stability simplifies thermal management concerns in automotive or industrial settings. That said, if the antenna is placed close to lossy substrates or embedded within composite housings, reactive loading may necessitate minor tuning via discrete components or microstrip stubs. In such cases, simulation-based tuning is preferred over empirical adjustment to avoid compromising radiation integrity.
How does the polarization type of the ANT1818B008R1516S impact performance in urban canyons versus open skies?
As a circularly polarized antenna, the ANT1818B008R1516S effectively handles signal reflections common in urban environments where satellites appear at low elevation angles. Unlike linearly polarized antennas, it minimizes fading caused by multipath propagation by maintaining consistent signal reception regardless of orientation changes in the device. In open-sky conditions, this characteristic ensures maximum link margin between the satellite and receiver. However, the effectiveness depends on achieving a low axial ratio (<3 dB) across the band—a condition met by proper installation. In dense cityscapes with tall buildings, reflected signals arrive out of phase and may interfere constructively or destructively; the antenna’s circular polarization helps reject vertically polarized noise while preserving direct line-of-sight signals. Thus, the ANT1818B008R1516S delivers more stable time-to-first-fix (TTFF) and lower position error in challenging geometries compared to linear alternatives.

Parts with Similar Specifications

The three parts on the right have similar specifications to Pulse Electronics ANT1818B008R1516S

Product Attribute ANT1818B003R1516S ANT1818B00BR1516S ANT1818B00DR1516S ANT1818B00DT1516S
Part Number ANT1818B003R1516S ANT1818B00BR1516S ANT1818B00DR1516S ANT1818B00DT1516S
Manufacturer Pulse Electronics Pulse Electronics Pulse Electronics Pulse Electronics
Series - - - -
Base Product Number - DAC34H84 MAX500 ADS62P42
Package - Tape & Reel (TR) Tube Tape & Reel (TR)

ANT1818B008R1516S Datasheet PDF

Download ANT1818B008R1516S pdf datasheets and Pulse Electronics documentation for ANT1818B008R1516S - Pulse Electronics.

Environmental Information
Pulse Larson REACH.pdf

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Shipment

Delivery Time

In-stock items can be shipped within 24 hours. Some parts will be arranged for delivery within 1-2 days from the date all items arrive at our warehouse. And Allelco ships order once a day at about 17:00, except Sunday. Once the goods are shipped, the estimated delivery time depends on the shipping methods and Delivery destination. The table below shows are the logistic time for some common countries.

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(Different time frame / countries / package size has different price.)

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Common Countries Logistic Time Reference
Region Country Logistic Time(Day)
America United States 5
Brazil 7
Europe Germany 5
United Kingdom 4
Italy 5
Oceania Australia 6
New Zealand 5
Asia India 4
Japan 4
Middle East Israel 6
DHL & FedEx Shipment Charges Reference
Shipment charges(KG) Reference DHL(USD$)
0.00kg-1.00kg USD$30.00 - USD$60.00
1.00kg-2.00kg USD$40.00 - USD$80.00
2.00kg-3.00kg USD$50.00 - USD$100.00
Note:
The above table is for reference only. There may have some data bias for the uncontrollable factors.
Contact us if you have any questions.
  • QC (Quality Warranty)
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Allelco is committed to exceeding customer expectations through customer service excellence, order accuracy, and on-time delivery.
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Electrostatic Discharge Protection and Handling

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Pulse Electronics

ANT1818B008R1516S

Pulse Electronics
98D-ANT1818B008R1516S

Want a better price? Add to Cart and Submit RFQ now, we'll contact you immediately.

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