TetraAnt 2 19 20 RSLL
Directional Panel Antenna with Low SLL, 19 dBi, 2.4 GHz
Product Overview and Features
- 18.5 dBi peak gain
- 2.40 - 2.50 GHz frequency range
- Low SLL
- 30 dB Cross-polar rejection
- 25 dB Front-to_Back ratio
- Protected against static electricity
- Completely weatherproof - no vented holes
This 2.4 GHz directional panel antenna features a low sidelobe level, designed to improve its performance in environments with a high density of wireless networks. The array of radiating elements has been redesigned to reduce sensitivity to signals arriving from directions outside the main beam. By suppressing sidelobes, the antenna reduces the reception of unwanted signals from other directions, helping to improve signal-to-noise ratio (SNR).
The antenna provides reliable directional performance in congested Wi-Fi and 2.4 GHz ISM band environments. It is particularly well suited to dense urban areas where many wireless networks operate in close proximity. Since the antenna has the same radiation pattern in transmit and receive modes, its directional characteristics help limit unwanted radiation towards other networks and reduce susceptibility to interference from outside the main beam.
Price: 195 EUR net
TetraAnt 2 19 20 RSLL - Gain
Realized Antenna Gain versus Frequency
This figure shows the realized gain of the antenna across the 2.4 GHz band. It takes into account all antenna losses and is measured at the connector reference plane.
The antenna gain was measured in the slant ranges using a two-antenna method.
TetraAnt 2 19 20 RSLL - VSWR
Antenna Impedance Matching and VSWR Performance
The impedance matching (VSWR) for TetraAnt 2 19 20 RSLL microstrip antenna is lower than 2.0:1 in the bandwidth from 2.40 to 2.57 GHz.
Because the min. lower frequency and the max. upper frequency in 2.4 GHz Wi-Fi frequencies allowed by the FCC are 2.401 and 2.495 GHz, it's clearly visible that this antenna covers the entire Wi-Fi band.
TetraAnt 2 19 20 RSLL - Radiation Patterns
Co-polar and Cross-polar Radiation Patterns
Patterns are referenced to 0 dB, the full scale is 40 dB. Frequencies are: 2.4 - 2.45 - 2.47 - 2.48 - 2.49 - 2.5 GHz. For all frequencies x- (or cross-) polar pattern for E plane, marked in BLUE is out of the scale, because it is lower than -40 dB.
- E vector plane, co-polar: RED (is parallel to the "waves" symbol on the antenna's radome)
- E vector plane, cross-polar: BLUE
- H vector plane, co-polar: BLACK (is perpendicular to the "waves" symbol on the antenna's radome)
- H vector plane, cross-polar: GREEN
TetraAnt 2 19 20 RSLL - 3D animation of the radiation pattern
3D Computer Simulation and Radiation Visualization
Antenna radiation patterns are usually shown in XY or polar coordinates, but this is not enough for fully understanding the radiation pattern of a given antenna. For example, some side lobes can be evident in other cuts like ±45-degree planes.
Fortunately, we can analyze 3D radiation patterns like this one, taken at 2.45 GHz for the TetraAnt 2 19 20 RSLL. As we can see, there is no evidence of high-level sidelobes at cuts other than those indicated in the standard XY coordinates.
The direction of maximum radiation is marked by the "hot" red color. The simulation frequency was 2.45 GHz.
TetraAnt 2 19 20 RSLL - Specification
Complete Electrical and Mechanical Technical Specifications
Electrical Parameters
- Frequency Range: 2.4 - 2.5 GHz
- Peak Gain: = 18.5 dBi
- Impedance: 50 ohm
- VSWR: <= 2:1
- HPBW plane E (electric): 21°
- HPBW plane H (magnetic): 21°
- Back Radiation: <= -25 dB. See Characteristics
- Cross-Polar Rejection: >30 dB. See Characteristics
- Maximum power: 15 W
- Protection against static electricity: yes - DC ground
Mechanical Parameters
- Technology: Microstrip, 4x4 array of patches
- Connector: Rear-mounted N Female, tested up to 12 GHz
- Dimensions: 330 x 330 x 35 mm (incl. connector)
- Dielectric Radome: White, UV-resistant PVC
- Base: High-strength aluminum alloy
- Construction: Completely weatherproof design
- Operating Temperature Range: -30°C to +50°C
- Mounting Kit: Included, allows mechanical tilt adjustment (mast diameter: 20-50 mm)
- Antenna Mass: 1.1 kg (incl. mounting hardware)
Additional Information
- This antenna is covered by a comprehensive 5-year warranty.
- Fully supported product — for technical inquiries and engineering support, please contact the designer directly at: fert(at)elboxrf(dot)com.
- Original 2004 and 2009 designs developed by Przemysław Fert, the company owner.