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Product Detailed Parameters
- Description：RF ANT 850/900MHZ WHIP CTR SMA
- Series：ALPHA 18
- Mfr：Siretta Ltd
- Package：Bulk
- RF Family/Standard：Cellular
- Frequency Group：UHF (300MHz ~ 1GHz), UHF (1GHz ~ 2GHz)
- Frequency (Center/Band)：850MHz, 900MHz, 1.8GHz, 1.9GHz, 2.1GHz
- Frequency Range：-
- Antenna Type：Whip, Center-Fed Double
- Number of Bands：5
- VSWR：2
- Return Loss：-
- Gain：3dBi
- Features：-
- Termination：SMA Male
- Ingress Protection：-
- Grade：-
- Qualification：-
- Mounting Type：Adhesive
- Height (Max)：1.091" (27.71mm)
- Applications：GPRS, GSM, UMTS
- Power - Max：-
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Overview
The Siretta ALPHA18/3M/SMAM/S/S/26 is a passive indoor cellular antenna designed for GSM, GPRS, and 3G UMTS networks. It operates within the frequency range of 824 MHz to 2.17 GHz, covering essential cellular bands including DCS, PCS, and WCDMA. The unit features a T-bar physical form factor with an omnidirectional radiation pattern, suitable for broad coverage in indoor environments. It includes a 3-meter lead length terminated with an SMA male connector, facilitating connection to standard RF interfaces.
Feature Summary
- Robust ABS casing construction for durable indoor deployment
- Omnidirectional T-bar design ensuring uniform signal distribution
- Integrated 3-meter cable with SMA male termination for direct connectivity
Applications
- Indoor GSM and GPRS network coverage enhancement
- 3G UMTS signal reception for mobile data services
- Corporate office and commercial building wireless infrastructure
Procurement Notes
Verify that the SMA male connector polarity matches the receiving equipment interface. Confirm the 3-meter cable length accommodates the installation distance between the antenna location and the base station or repeater input. Ensure the indoor environment does not require IP-rated outdoor enclosures, as this model utilizes an ABS housing intended for internal mounting.
Selection Notes
Select this model when indoor coverage for 2G and 3G cellular protocols is required without external weatherproofing needs. The T-bar form factor allows for flexible placement on flat surfaces or mounting brackets. Choose this part over whip antennas if a lower profile and broader horizontal radiation pattern are preferred for stationary indoor devices.
Part Context
This component belongs to the Siretta ALPHA series, which specializes in passive cellular antennas for indoor applications. The series typically offers various cable lengths and connector options to suit different integration requirements. The ALPHA18 variant specifically targets multi-band GSM and 3G operations using a compact T-bar architecture.
Replacement Considerations
Check for ALPHA18 variants with different cable lengths or connector types if the current 3-meter SMA male configuration is unsuitable. Verify compatibility with existing SMA female ports on target hardware before substituting.
