# PCB ANTENNA, LINEAR, 2.4-2.5GHZ, 1DBI
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**URL**: https://novapart.co/products/W3921B0100/pcb-antenna-linear-24-25ghz-1dbi
**SKU**: W3921B0100
**Manufacturer**: PULSE LARSEN ANTENNAS
**Category**: Audio Visual || Antennas || RF Antennas
**Price**: €1.0100
**Stock**: 1000+
**Lead Time**: 2 days (indicative)
## Description
The Pulse Larsen Antennas W3921B0100 is an internal flexible printed circuit (FPC) dipole antenna engineered for 2.4 GHz ISM band applications, operating across a frequency range of 2400 MHz to 2500 MHz. Featuring a linear polarization and an omnidirectional radiation pattern, this PCB antenna delivers a nominal peak gain of 1 dBi with greater than 50% efficiency. It is designed with a standard 50-ohm input impedance, maintains a Voltage Standing Wave Ratio (VSWR) of under 2, and handles a maximum input power of 2 watts, making it well-suited for low-power short-range wireless communication nodes.
Physically, the radiator measures 33 mm by 7.7 mm with an ultra-thin profile of 0.1 mm, built upon a flexible dielectric substrate integrated with a 3M467 adhesive backing for direct mounting inside enclosures. The standard configuration utilizes a 100 mm coaxial cable (1.13 mm outer diameter) terminated with a U.FL-compatible connector for reliable board-level RF integration. The assembly operates reliably across an extended industrial temperature range of -40°C to +85°C, adding mechanical robustness for internal installations.
This internal FPC antenna is optimized for integration into compact electronic devices supporting Bluetooth, Wi-Fi, Zigbee, BLE, and proprietary 2.4 GHz ISM radios. Typical application environments include set-top boxes, security systems, industrial automation hardware, and transportation telematics units where internal space constraints and reliable omnidirectional RF performance are required.
## Specifications
| Parameter | Value |
|---|---|
| Gain | 1dBi |
| Vswr | 2 |
| Input Power | 2W |
| Antenna Type | PCB |
| Frequency Max | 2.5GHz |
| Frequency Min | 2.4GHz |
| Input Impedance | 50ohm |
| Antenna Mounting | Adhesive |
| Antenna Polarisation | Linear |
## Datasheet
📄 [Download PDF](https://novapart.co/datasheet/farnell:2897273/)
## **Description: FPC 2.4G antenna**
## **Series: Internal Antenna**
## **PART NUMBER: W3921XXXXX**
## **Features:**
- 2400-2500MHz FPC dipole
- Efficiency >50%
- Gain +1dBi
- 100mm cable length and U.FL compatible connector as standard setup, P/N W3921B0100
- Custom configurations upon request
## **Applications:**
- Bluetooth, Zigbee, WiFi, BLE
- ISM 2.4GHz band radios
- Set top boxes,
- Security
- Transportation
## All dimensions are in mm / inches
## Issue: 1725
In the effort to improve our products, we reserve the right to make changes judged to be necessary. CONFIDENTIAL AND PROPRIETARY INFORMATION
This document contains confidential and proprietary information of Pulse Electronics, Inc. (Pulse) and is protected by copyright, trade secret and other state and federal laws. Its receipt or possession does not convey any rights to reproduce, disclose its contents, or to manufacture, use or sell anything it may describe. Reproduction, disclosure or use without specific written authorization of Pulse is strictly forbidden. For more information:
Pulse Worldwide Headquarters
15255 Innovation Drive #100
San Diego, CA 92128 USA Tel:1-858-674-8100
Pulse/Larsen Antennas
18110 SE 34[th] St Bldg 2 Suite 250 Vancouver, WA 98683 USA Tel: 1-360-944-7551-
Europe Headquarters
Pulse GmbH & Do, KG Zeppelinstrasse 15 Herrenberg, Germany Tel: 49 7032 7806 0
Pulse (Suzhou) Wireless Products Co, Inc. 99 Huo Ju Road(#29 Bldg,4[th] Phase Suzhou New District Jiangsu Province, Suzhou 215009 PR China Tel: 86 512 6807 9998
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## **Description: FPC 2.4G antenna**
## **Series: Internal Antenna**
## **PART NUMBER: W3921XXXXX**
W3921B0039 39mm 1.13mm OD cable W3921B0050 50mm 1.13mm OD cable W3921B0100 100mm 1.13mm OD cable W3921T0150 150mm 0.81mm OD cable
U.FL compatible connector U.FL compatible connector U.FL compatible connector W.FL compatible connector
## Issue: 1725
In the effort to improve our products, we reserve the right to make changes judged to be necessary. CONFIDENTIAL AND PROPRIETARY INFORMATION
This document contains confidential and proprietary information of Pulse Electronics, Inc. (Pulse) and is protected by copyright, trade secret and other state and federal laws. Its receipt or possession does not convey any rights to reproduce, disclose its contents, or to manufacture, use or sell anything it may describe. Reproduction, disclosure or use without specific written authorization of Pulse is strictly forbidden.
2
## **Description: FPC 2.4G antenna**
## **Series: Internal Antenna**
## **PART NUMBER: W3921XXXXX**
|Frequency 2400-2500MHz|Frequency 2400-2500MHz|
|---|---|
|Nominal Impedance|50|
|VSWR|< 2|
|Gain|1dBi +/- 1 dB|
|Efficiency 50%|Efficiency 50%|
|Radiation Pattern Omni|Radiation Pattern Omni|
|Polarization|Linear|
|Power withstanding|2 W|
## _**(*) All RF parameters measured on 2mm thick PC plate**_
## Issue: 1725
In the effort to improve our products, we reserve the right to make changes judged to be necessary.
CONFIDENTIAL AND PROPRIETARY INFORMATION
This document contains confidential and proprietary information of Pulse Electronics, Inc. (Pulse) and is protected by copyright, trade secret and other state and federal laws. Its receipt or possession does not convey any rights to reproduce, disclose its contents, or to manufacture, use or sell anything it may describe. Reproduction, disclosure or use without specific written authorization of Pulse is strictly forbidden.
3
## **Description: FPC 2.4G antenna**
## **Series: Internal Antenna**
**PART NUMBER: W3921XXXXX**
**MECHANICAL SPECIFICATIONS** eee PCB type Flexible Radiator size 33[1.3] x 7.7[0.3] mm[inch] Adhesive 3M467 Total thickness (Radiator + adhesive) 0.1[0.004] mm[inch] Weight about 0.37 g Cable type OD 1.13mm/0.81mm coax cable Cable length Optional mm[inch] Connector U.FL/W.FL compatible
**ENVIRONMENTAL SPECIFICATIONS** eee Operating temperature -40/+85° C
## Issue: 1725
In the effort to improve our products, we reserve the right to make changes judged to be necessary. CONFIDENTIAL AND PROPRIETARY INFORMATION
This document contains confidential and proprietary information of Pulse Electronics, Inc. (Pulse) and is protected by copyright, trade secret and other state and federal laws. Its receipt or possession does not convey any rights to reproduce, disclose its contents, or to manufacture, use or sell anything it may describe. Reproduction, disclosure or use without specific written authorization of Pulse is strictly forbidden.
4
## **Description: FPC 2.4G antenna**
## **Series: Internal Antenna**
## **PART NUMBER: W3921XXXXX**
## **MECHANICAL DRAWING**
## Issue: 1725
In the effort to improve our products, we reserve the right to make changes judged to be necessary. CONFIDENTIAL AND PROPRIETARY INFORMATION
This document contains confidential and proprietary information of Pulse Electronics, Inc. (Pulse) and is protected by copyright, trade secret and other state and federal laws. Its receipt or possession does not convey any rights to reproduce, disclose its contents, or to manufacture, use or sell anything it may describe. Reproduction, disclosure or use without specific written authorization of Pulse is strictly forbidden.
5
## **Description: FPC 2.4G antenna**
## **Series: Internal Antenna**
## **PART NUMBER: W3921XXXXX**
## **CHARTS**
## _**(*) All RF parameters measured on 2mm thick PC plate**_
## Return Loss
## Issue: 1725
In the effort to improve our products, we reserve the right to make changes judged to be necessary. CONFIDENTIAL AND PROPRIETARY INFORMATION
This document contains confidential and proprietary information of Pulse Electronics, Inc. (Pulse) and is protected by copyright, trade secret and other state and federal laws. Its receipt or possession does not convey any rights to reproduce, disclose its contents, or to manufacture, use or sell anything it may describe. Reproduction, disclosure or use without specific written authorization of Pulse is strictly forbidden.
6
## **Description: FPC 2.4G antenna**
## **Series: Internal Antenna**
## **PART NUMBER: W3921XXXXX**
## **CHARTS**
## _**(*) All RF parameters measured on 2mm thick PC plate**_
## VSWR
## Issue: 1725
In the effort to improve our products, we reserve the right to make changes judged to be necessary. CONFIDENTIAL AND PROPRIETARY INFORMATION
This document contains confidential and proprietary information of Pulse Electronics, Inc. (Pulse) and is protected by copyright, trade secret and other state and federal laws. Its receipt or possession does not convey any rights to reproduce, disclose its contents, or to manufacture, use or sell anything it may describe. Reproduction, disclosure or use without specific written authorization of Pulse is strictly forbidden.
7
## **Description: FPC 2.4G antenna**
## **Series: Internal Antenna**
## **PART NUMBER: W3921XXXXX**
## **CHARTS**
## _**(*) All RF parameters measured on 2mm thick PC plate**_
## Efficiency(%) & Gain (dBi)
## Issue: 1725
In the effort to improve our products, we reserve the right to make changes judged to be necessary. CONFIDENTIAL AND PROPRIETARY INFORMATION
This document contains confidential and proprietary information of Pulse Electronics, Inc. (Pulse) and is protected by copyright, trade secret and other state and federal laws. Its receipt or possession does not convey any rights to reproduce, disclose its contents, or to manufacture, use or sell anything it may describe. Reproduction, disclosure or use without specific written authorization of Pulse is strictly forbidden.
8
## **Description: FPC 2.4G antenna**
## **Series: Internal Antenna**
**PART NUMBER: W3921XXXXX**
## **CHARTS**
Z Typical free space radiation pattern WIFI2.4GHz _**(*) All RF parameters measured on 2mm thick**_ ~~2~~ _**PC plate**_ X Y
XY Plane
**==> picture [537 x 396] intentionally omitted <==**
**----- Start of picture text -----**
0
5
30
330 0
2400MHz
-5
Avg (dBi) = -5.13
Peak (dBi) = -1.55
-10
Avg -3 (deg) = 175
60
-15
300 X 2450MHz
-20
Avg (dBi) = -4.30
Peak (dBi) = -0.51
—_— -25
Avg -3 (deg) = 215
-30
Y 2500MHz
90
-35 Avg (dBi) = -3.27
270
Peak (dBi) = 0.98
Avg -3 (deg) = 155
wy)
120
240
(=
SJSe 150
210 ae 2400MHz 2450MHz
180
Phi Angle (°) 2500MHz
Power (dBm)
**----- End of picture text -----**
## Issue: 1725
In the effort to improve our products, we reserve the right to make changes judged to be necessary. CONFIDENTIAL AND PROPRIETARY INFORMATION
**==> picture [8 x 10] intentionally omitted <==**
**----- Start of picture text -----**
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**----- End of picture text -----**
This document contains confidential and proprietary information of Pulse Electronics, Inc. (Pulse) and is protected by copyright, trade secret and other state and federal laws. Its receipt or possession does not convey any rights to reproduce, disclose its contents, or to manufacture, use or sell anything it may describe. Reproduction, disclosure or use without specific written authorization of Pulse is strictly forbidden.
## **Description: FPC 2.4G antenna**
## **Series: Internal Antenna**
## **PART NUMBER: W3921XXXXX**
## **CHARTS**
Typical free space radiation pattern WIFI2.4GHz
# _**(*) All RF parameters measured on 2mm thick PC plate**_
ZX Plane 0
5 30 330 0 2400MHz -5 Avg (dBi) = -2.49 ———N Peak (dBi) = 0.92 -10 Avg -3 (deg) = 85 60 -15 300 2450MHz Z \ -20 f Co . Avg (dBi) = -2.57 Peak (dBi) = 1.05 -25 Avg -3 (deg) = 85 -30 2500MHz 90 -35 X Avg (dBi) = -1.77 270 Peak (dBi) = 1.68 | } Avg -3 (deg) = 77. 5 \ ,[J] \ JI 120 240 —~\ SJ 150 210 2400MHz 2450MHz 180 Theta Angle (°) 2500MHz
## Issue: 1725
In the effort to improve our products, we reserve the right to make changes judged to be necessary. CONFIDENTIAL AND PROPRIETARY INFORMATION
**==> picture [14 x 10] intentionally omitted <==**
**----- Start of picture text -----**
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**----- End of picture text -----**
This document contains confidential and proprietary information of Pulse Electronics, Inc. (Pulse) and is protected by copyright, trade secret and other state and federal laws. Its receipt or possession does not convey any rights to reproduce, disclose its contents, or to manufacture, use or sell anything it may describe. Reproduction, disclosure or use without specific written authorization of Pulse is strictly forbidden.
## **Description: FPC 2.4G antenna**
## **Series: Internal Antenna**
## **PART NUMBER: W3921XXXXX**
## **CHARTS**
Typical free space radiation pattern WIFI2.4GHz
_**(*) All RF parameters measured on 2mm thick PC plate**_
YZ Plane
0 5 30 0 330 2400MHz -5 Avg (dBi) = -4.38 -10 Peak (dBi) = 1.02 Avg -3 (deg) = 70 Wz ~\ 60 -15 300 2450MHz -20 Y Avg (dBi) = -4.30 Peak (dBi) = 1.17 -25 Avg -3 (deg) = 50 -30 Z 2500MHz 90 -35 Avg (dBi) = -4.08 270 Peak (dBi) = 1.83 Avg -3 (deg) = 27. \ 5 120 240 S~~ 150 210 2400MHz 180 Theta Angle (°) 2500MHz
2400MHz 2450MHz
## Issue: 1725
In the effort to improve our products, we reserve the right to make changes judged to be necessary. CONFIDENTIAL AND PROPRIETARY INFORMATION
11
This document contains confidential and proprietary information of Pulse Electronics, Inc. (Pulse) and is protected by copyright, trade secret and other state and federal laws. Its receipt or possession does not convey any rights to reproduce, disclose its contents, or to manufacture, use or sell anything it may describe. Reproduction, disclosure or use without specific written authorization of Pulse is strictly forbidden.
## **Description: FPC 2.4G antenna**
## **Series: Internal Antenna**
## **PART NUMBER: W3921XXXXX**
## **PACKAGING**
## 10PCS/PE bag 10 PE bag/foam bag 50 foam bag/ carton box
## Total 5000PCS/Carton box
## Issue: 1725
12
In the effort to improve our products, we reserve the right to make changes judged to be necessary. CONFIDENTIAL AND PROPRIETARY INFORMATION This document contains confidential and proprietary information of Pulse Electronics, Inc. (Pulse) and is protected by copyright, trade secret and other state and federal laws. Its receipt or possession does not convey any rights to reproduce, disclose its contents, or to manufacture, use or sell anything it may describe. Reproduction, disclosure or use without specific written authorization of Pulse is strictly forbidden.
## Links
- [View this product on Novapart](https://novapart.co/products/W3921B0100/pcb-antenna-linear-24-25ghz-1dbi)
- [Request a quote for this part](https://novapart.co/quote/)
- [Supplier page](https://es.farnell.com/en-ES/pulse-larsen-antennas/w3921b0100/pcb-antenna-linear-2-4-2-5ghz/dp/2897273)
---
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