3127 Magnetic Dipole Antenna

3127 Magnetic Dipole Antenna

ETS-Lindgren's Series 3127 Resonant Loops are designed to meet the Cellular Telecommunication and Internet Association's (CTIA) +/- 0.1 dB symmetry requirement for ripple test measurements at the labeled center frequency.

Key Features
  • Range of Frequencies to Cover Wireless Device Bands
  • Designed for CTIA Ripple Test
  • Meets CTIA +/- 0.1 dB Symmetry Requirement

ETS-Lindgren's Series 3127 Resonant Loops are designed to meet the Cellular Telecommunication and Internet Association's (CTIA) +/- 0.1 dB symmetry requirement for ripple test measurements at the labeled center frequency. These omnidirectional antennas have a magnetic dipole pattern approaching that of a half-wave resonant electric dipole. The pattern produced has the same peak and null orientation as that of a sleeve dipole oriented along the same axis, but with the directions of the electric and magnetic fields reversed. That is, the electric field vector along the azimuth is perpendicular to the axis and the magnetic field vector is parallel to the axis. The loop design allows the antenna to be end-fed to avoid cable and feedpoint interactions that interfere with the symmetry of the antenna. Integral quarter-wave chokes and/or ferrite loading (depending on frequency range) also help to reduce cable interaction. This design also provides exceptional symmetry to meet the CTIA criteria for ripple test antennas.

All 3127 resonant loops are designed with better than +/- 0.1 dB symmetry (0.2 dB peak-to-null) in at least a +/- 5 MHz band around the labeled center frequency. VSWR is less than 5: 1 at the resonant frequency, which is slightly higher than the labeled symmetry frequency.  The loops have a nominal 50 impedance, a maximum continuous transmit power of one watt, and are equipped with a female SMA connector.

The loops are calibrated using an A2LA accredited process with a typical measurement uncertainty on the order of +/- 1.0 dB at the center frequency. During the calibration process, the dipoles are also certified to meet the +/- 0.1 dB symmetry required for use in the ripple test specified in the CTIA's Over-The-Air Performance Test Plan, in a +/- 5 MHz band around the labeled center frequency.  For accurate gain values to perform range calibration, the ETS-Lindgren Model 3126 Precision Reference Sleeve Dipoles are recommended.

Specifications
View the 3127 Magnetic Dipole Antenna technical specifications below

Physical Specifications

Model
Mounting Diameter
Loop Housing Diameter
Overall Length
3127-3600
1.9cm (0.75in)
3.7cm (1.46in)
16.3cm(6.5in)
3127-5500
1.9cm (0.75in)
2.8cm (1.1in)
16.3cm (6.5in)
All Other 3127 Models
1.9cm (0.75in)
12.7cm (5.0in)
21.6cm (8.5in)

Electrical Specifications

Connector Type (All Models): SMA Female
Impedance (Nominal; All Models): 50
Maximum Continuous Power (All Models): 1W
VSWR (All Models): <5:1 Typical

Model Frequency Range
Model
Frequency Range
3127-450
445 MHz to 455 MHz
3127-617
612 MHz to 622 MHz
3127-700
695 MHz to 705 MHz
3127-850
845 MHz to 855 MHz
3127-880
875 MHz to 885 MHz
3127-920
915 MHz to 925 MHz
3127-1575
1570 MHz to 1580 MHz
3127-1732
1727 MHz to 1737 MHz
3127-1747
1742 MHz to 1752 MHz
3127-1768
1763 MHz to 1773 MHz
3127-1790
1785 MHz to 1795 MHz
3127-1800
1875 MHz to 1885 MHz
3127-1862
1863 MHz to 1873 MHz
3127-1880
1875 MHz to 1885 MHz
3127-1950
1945 MHz to 1955 MHz
3127-2100
2095 MHz to 2105 MHz
3127-2132
2127 MHz to 2137 MHz
3127-2140
2135 MHZ to 2145 MHz
3127-2150
2145 MHz to 2155 MHz
3127-2450
2445 MHz to 2455 MHz
3127-2535
2530 MHz to 2540 MHz
3127-2600
2595 MHz to 2605 MHz
3127-2655
2650 MHz to 2660 MHz
3127-3600
3595 MHz to 3605 MHz
3127-5500
5495 MHz to 5505 MHz


Related Products
View the 3127 Magnetic Dipole Antenna product family below
Request a QuoteView Manual

Literature and Videos