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EMC ANTENNA


EC Microwave High Gain Log-Periodic Antenna offers excellent broadband characteristics, aradiation pattern that is approximately rotation-symmetrical as well as high gain, making itparticularly suitable for EMS immunity measurements. In comparison with existing systems, the required field strengths can be achieved with a lower amplifier power. This is due to the high antenna gain. Its small size, wide frequency range and folding mechanism make the antenna ideal for use in test chambers.


 

PN MIN Frequency  MAX Frequency  VSWR Gain Polarization Impedance Connector PatternType
OVLA-00710 70MHz 10GHz <2 8.6dBi±2.3dB Linear 50Ωnominal Type N female / Type 7/16 female directional
OVLA-00810 80MHz 1GHz 1.5:1 average 8 dBi Linear 50Ωnominal Type 7/16 female directional
OVLA-00815 80MHz 1.5GHz <1.5 9 +0.8 / -1.5 dB Linear 50Ωnominal Type N female / Type 7/16 female directional
OVLA-0083 80MHz 3GHz <2 >8dBi Linear 50Ωnominal Type N female  directional
OVLA-008100 80MHz 10GHz <2 8.1dBi±2.8dB Linear 50Ωnominal Type N female directional
OVLA-06105 600MHz 10.5GHz <2 10.3 dBi +/- 1.5 dBi linear 50Ωnominal Type N female directional

Broad Band Horn Antenna View More


Why wideband double ridged horn antennas

There has been an increasing interest in applying wideband double ridged horn antennas in EMC test procedures because of their high gain, well-shaped beam, and easy manufacturing.

Dual ridged horn antennas became commercially available, and some standards like MILSTD-461E determined 1-18 GHz dual-ridged horn as the standard antenna for the EMC test procedures.


Applications:

EMC/RF Measurements

Detecting the Direction

Surveillance

Antenna Gain/Pattern Measurements


The frequency range of dual-ridged horn antenna

 

The compact design of an ultra

wideband dual ridged horn antenna (DRHA)。The antenna

operates wide band with a peak gain of about 16 dBi. It is one of the most common aperture antenna used in laboratories mainly operated in the L-band S-band C-band, X-band,K-band, Ku-band, and Ka-band, E-band (0.2GHz to 50GHz).OBH series antennas support linear polarized waveforms and appropriate for the test of wireless and telecom communication.

 

Why double ridge

To extend the maximum usage of the bandwidth of horns, ridges are introduced in the flared part of the antenna. This is commonly done in waveguides to lower the fundamental mode's cutoff frequency and thus expand the single-mode range before higher-order modes occur.

One common kind of ridged horn antenna is the double-ridged antenna.

 

Four important parts a dual-ridged horn have


A Double ridge horn antenna contains four main sub-sections:

Feeding section,

waveguide

back cavity section, ridges,

the pyramidal Figure shows the perspective view and

the cut-away view of the understudy DRHA.


The ECmicrowave broadband horn antenna presents a very low VSWR in its minor frequency range and ultra broad bandwidth. The increasing gain with frequency helps to compensate for cable losses. This horn antenna only supports linear polarization and can be used for receiving and transmitting applications.

The broadband horn antenna covers the frequency range from 0.1GHz to 40GHz with the gain from 4 dBi to 20 dBi VSWR is <2.7Max and a Single Linear Polarization.

The antenna is appropriate for the test of wireless and telecom communication antennas. High gain and low VSWR permit the measurement of weak signals and the generation of high field strengths without any significant return loss


Part No Frequency RangeGHz GaindBi VSWR Polarization Cross-Polar Discrimination  Impedance
OBH-230 0.2 - 3.0 6-15 <2.0Max Single Linear 50Ω 50Ohms
OBH-460 0.4-6.0 6-15 <2.0Max Single Linear 50Ω 50Ohms
OBH-690 0.6 - 9.0 6-15 <2.0Max Single Linear 50Ω 50Ohms
OBH80D-15 0.8 - 2.0 10-16 <2.0Max Single Linear 50Ω 50Ohms
OBH-880 0.8 - 8.0 8-13 <2.7Max Single Linear 50Ω 50Ohms
OBH-08120 0.8 - 12.0 6-15 <2.0Max Single Linear 50Ω 50Ohms
OBH-08180 0.8-18.0 8-13 <2.7Max Single Linear 50Ω 50Ohms
OBH-1020-15 1-2 15 2.0 Max. Linear 50Ω 50Ohms
OBH-10125 1.0-12.5 6-15 <2.0Max Single Linear 50Ω 50Ohms
OBH-10180 1.0-18.0 6-15 <2.0Max Single Linear 50Ω 50Ohms
OBH-200D-15 2-4.8 15 2.0 Max. Linear 50Ω 50Ohms
OBH-20180 2.0 - 18.0 3.5-13 <2.0Max Single Linear 50Ω 50Ohms
OBH-20200 2.0 - 20.0 3.5-13 <2.0Max Single Linear 50Ω 50Ohms
OBH-20320 2.0 - 32.0 4-16 <2.0Max Single Linear 50Ω 50Ohms
OBH-750D-15 7.5-18 15 2.0 Max. Linear 50Ω 50Ohms
OBH-100400 10.0-40.0 8-13 <2.7Max Single Linear 50Ω 50Ohms
OBH-110D-15 11-26.5 15 2.0 Max. Linear 50Ω 50Ohms
OBH-180400 18-40.0 4-16 <2.0Max Single Linear 50Ω 50Ohms
OBH-180500 18-50.0 13-17 1.2:1 Linear 50Ω 50Ohms


Millimeter SGH Antenna View More

Part No.  Frequency Range(GHz)  Gain(dB) 3dB Beam Width Waveguide Material Polarization Impedance Waveguide Size
OLB-03-20  220-325  20 H 18° / V 18° WR3 Cu Linear 50O WR-03 Waveguide with UG-387/U-M Flange
OLB-03-25  220-325  25 H 10° / V 10° WR3 Cu Linear 50O WR-03 Waveguide with UG-387/U-M Flange
OLB-04-25  170-260  25 H 10° / V 10° WR4 Cu Linear 50O WR-04 Waveguide with UG-387/U-M Flange
OLB-05-20  140-220  20 H 18° / V 18° WR5 Cu Linear 50O WR-05 Waveguide with UG-387/U-M Flange
OLB-05-25  140-220  25 H 10° / V 10° WR5 Cu Linear 50O WR-05 Waveguide with UG-387/U-M Flange
OLB-06-10  110-170  10 H 55° / V 55° WR6 Cu Linear 50O WR-06 Waveguide with UG-387/U-M Flange
OLB-06-20  110-170  20 H 18° / V 18° WR6 Cu Linear 50O WR-06 Waveguide with UG-387/U-M Flange
OLB-06-23  110-170  23  E 11° / H 13° WR6 Cu Linear 50O WR-06 Waveguide with UG-387/U-M Flange
OLB-06-25  110-170  25 H 10° / V 10° WR6 Cu Linear 50O WR-06 Waveguide with UG-387/U-M Flange
OLB-08-20  90-140  20 H 18° / V 18° WR8 Cu Linear 50O WR-08 Waveguide with UG-387/U-M Flange
OLB-08-23  90-140  23  E 11° / H 13° WR8 Cu Linear 50O WR-08 Waveguide with UG-387/U-M Flange
OLB-08-25  90-140  25 H 10° / V 10° WR8 Cu Linear 50O WR-08 Waveguide with UG-387/U-M Flange
OLB-10-15  75-110  15 H 30° / V 30° WR10 Cu Linear 50O WR-10 Waveguide with UG-387/U-M Flange
OLB-10-20  75-110  20 H 18° / V 18° WR10 Cu Linear 50O WR-10 Waveguide with UG-387/U-M Flange
OLB-10-23  75-110  23  E 11° / H 13° WR10 Cu Linear 50O WR-10 Waveguide with UG-387/U-M Flange
OLB-10-25  75-110  25 H 10° / V 10° WR10 Cu Linear 50O WR-10 Waveguide with UG-387/U-M Flange
OLB-12-10  60-90  10 H 55° / V 55° WR12 Cu Linear 50O WR-12 Waveguide with UG-387/U Flange
OLB-12-13  60-90  13  E 39° / H 41° WR12 Cu Linear 50O WR-12 Waveguide with UG-387/U Flange
OLB-12-15  60-90  15 H 30 °/ V 30° WR12 Cu Linear 50O WR-12 Waveguide with UG-387/U Flange
OLB-12-20  60-90  20 H 18° / V 18° WR12 Cu Linear 50O WR-12 Waveguide with UG-387/U Flange
OLB-12-23  60-90  23  E 11° / H 13° WR12 Cu Linear 50O WR-12 Waveguide with UG-387/U Flange
OLB-12-25  60-90  25 H 10° / V 10° WR12 Cu Linear 50O WR-12 Waveguide with UG-387/U Flange
OLB-15-15  50-75  15 H 30° / V 30° WR15 Cu Linear 50O WR-15 Waveguide with UG-385/U Flange
OLB-15-17  50-75  17  E 26° / H 25° WR15 Cu Linear 50O WR-15 Waveguide with UG-385/U Flange
OLB-15-20  50-75  20 H 18° / V 18° WR15 Cu Linear 50O WR-15 Waveguide with UG-385/U Flange
OLB-15-23  50-75  23  E 11° / H 13° WR15 Cu Linear 50O WR-15 Waveguide with UG-385/U Flange
OLB-15-25  50-75  25 H 10° / V 10° WR15 Cu Linear 50O WR-15 Waveguide with UG-385/U Flange
OLB-19-10  40-60  10 H 55° / V 55° WR19 Cu Linear 50O WR-19 Waveguide with UG-383/U-M Flange
OLB-19-15  40-60  15 H 30° / V 30° WR19 Cu Linear 50O WR-19 Waveguide with UG-383/U-M Flange
OLB-19-17  40-60  17 H 25° / V  25° WR19 Cu Linear 50O WR-19 Waveguide with UG-383/U-M Flange
OLB-19-20  40-60  20 H 18° / V 18° WR19 Cu Linear 50O WR-19 Waveguide with UG-383/U-M Flange
OLB-19-23  40-60  23  E 11° / H 13° WR19 Cu Linear 50O WR-19 Waveguide with UG-383/U-M Flange
OLB-19-25  40-60  25 H 10° / V 10° WR19 Cu Linear 50O WR-19 Waveguide with UG-383/U-M Flange
OLB-22-20  33-50  20 H 18° / V 18° WR22 Cu Linear 50O WR-22 Waveguide with UG-383/U Flange
OLB-22-23  33-50  23  E 11° / H 13° WR22 Cu Linear 50O WR-22 Waveguide with UG-383/U Flange
OLB-22-25  33-50  25 H 10° / V 10° WR22 Cu Linear 50O WR-22 Waveguide with UG-383/U Flange
OLB-28-10  26.5-40  10 H 55° / V 55° WR28 Cu Linear 50O WR-28 Waveguide with UG-599/U Flange
OLB-28-17  26.5-40  17  E 26° / H 25° WR28 Cu Linear 50O WR-28 Waveguide with UG-599/U Flange
OLB-28-20  26.5-40  20 H 18° / V 18° WR28 Cu Linear 50O WR-28 Waveguide with UG-599/U Flange
OLB-28-23  26.5-40  23  E 11° / H 13° WR28 Cu Linear 50O WR-28 Waveguide with UG-599/U Flange
OLB-28-25  26.5-40  25 H 10° / V 10° WR28 Cu Linear 50O WR-28 Waveguide with UG-599/U Flange

Back Cavity Spiral Antenna View More

Part No. Frequency(GHz) Nominal Gain3 dB VSWR Input Impedance Connector Porlarization ax
OBS-520 0.5-2.0 3.6 Typ~6.1Typ 2.51Maximum 2.0:1 Typical 50 Ohms Nominal N-female LHCP/RHCP <3dB
OBS-840 0.8-4.0 0.6 Typ~2.2Typ 2.51Maximum 2.0:1 Typical 50 Ohms Nominal SMA-female LHCP/RHCP <3dB
OBS1080 1-8 -3 Typ~1 Typ16° 2.51Maximum 2.0:1 Typical 50 Ohms Nominal SMAfemale LHCP/RHCP <3dB
OBS-10180 1-18 -3.5 Typ~5.3 Typ 2.51Maximum 2.0:1 Typical 50 Ohms Nominal SMA-female LHCP/RHCP <3dB
OBS2040 2-4 -3 Typ~1 Typ16° 2.51Maximum 2.0:1 Typical 50 Ohms Nominal SMAfemale LHCP/RHCP <3dB
OBS-2060 2-6 -3.2 Typ~3.8 Typ 2.51Maximum 2.0:1 Typical 50 Ohms Nominal SMA-female LHCP/RHCP <3dB
OBS20180 2-18 -3 Typ~1 Typ16° 2.51Maximum 2.0:1 Typical 50 Ohms Nominal SMAfemale LHCP/RHCP <3dB
OBS-4080 4.0-8.0 2.5 Typ~5.6Typ 2.51Maximum 2.0:1 Typical 50 Ohms Nominal SMA-female LHCP/RHCP <3dB
OBS-60180 6.0-18.0 2.51Maximum 2.0:1 Typical 50 Ohms Nominal SMA-female LHCP/RHCP <3dB
OBS-80180 8-18.0 1.4 Typ~3.7 Typ 2.51Maximum 2.0:1 Typical 50 Ohms Nominal SMA-female LHCP/RHCP <3dB
OBS-180265 18-26.5 -4 Typ 2.51Maximum 2.0:1 Typical 50 Ohms Nominal SMA-female LHCP/RHCP <3dB

Luneburg lens Antenna View More

Part No. Frequency Range (GHz) Gain (dB) Return Loss (dB) Beamwidth Polarization  Diameter dimensions Antenna weight
OLLA-1726 1.7-2.6 15 dBi <-20 dB 30degree@2.2GHz All polarizations  150mm 120g
OLLA-2233 2.2-3.3  20 dBi <-20 dB 18degree@2.8GHz All polarizations  150mm 120g
OLLA-2640 2.6-3.95 15 dBi <-20 dB 30degree@3.3GHz All polarizations  145mm 116g
OLLA-4060 3.94-5.99 20 dBi <-20 dB 18degree @ 5GHz All polarizations  140mm 112g
OLLA-4670 4.64-7.05 15 dBi <-20 dB 30degree@5.8GHz All polarizations  140mm 112g
OLLA-5482 5.38-8.17 15 dBi <-20 dB 30degree@6.7GHz All polarizations  135mm 108g
OLLA-66100 6.57-9.99 15 dBi <-20 dB 30 degree@8.2GHz All polarizations  130mm 104g
OLLA-82125 8.2-12.5 15 dBi <-20 dB 30 degree @ 10GHz All polarizations  120mm 96g
OLLA-98150 9.84-15 20 dBi <-20 dB 18degree@12.5GHz All polarizations  110mm 88g
OLLA-120180 11.9-18 15 dBi <-20 dB 30degree @ 15GHz All polarizations  100mm 80g
OLLA-145200 14.5-22 15 dBi <-20 dB 30degree@17.5GHz All polarizations  85mm 68g
OLLA-176267 17.6-26.7 15 dBi <-20 dB 30degree @ 21GHz All polarizations  70mm 56g
OLLA-217330 21.7-33 20 dBi <-20 dB 18degree @ 26GHz All polarizations  50mm 40g
OLLA-265400 26.5-40 20 dBi <-20 dB 18degree @ 33GHz All polarizations  40mm 32g
OLLA-300400 30-40 20 dBi <-20 dB 30 degree @ 35GHz All polarizations 50mm 32  g

Probe Antenna View More

SECTION View More

Double Polarization Horn Antenna View More

Double Polarization Horn Antenna

The use of ultra-wideband (UWB) antenna technologies for the UWB radar and communication systems in both military and civilian applications continues to increase, In some high power radar system, high gain and stable phase center is very important, and the ridged horn is very proper for this application. The dual-polarization system can get more information than the single-polarization antenna system; furthermore, the polarization modes at different directions using one radiation aperture make the structure more compaction. So realizing dual-polarization antenna by loading quad-ridged with proper feeding is very important. The quad-ridged horn antenna can employ the dual-polarization character.

The fabricated QRHA unit had an offset feed semi-rigid (50 Ω) coax to waveguide transition using a captivated coaxial female connector. The semi-rigid coax passes through the center of the ridge, and only the inner conductor is exposed in the ridge gap, which terminates in the alignment cavity present on the opposite ridge. A similar orthogonal probe is present for the other pair of ridges having a center to center offset with reference to the first probe.


Dual polarized horn antennas (quad ridged horn antenna) are offered as both standard and custom models with rectangular waveguide borders for both plane and vertical ports. Dual polarized horn antennas support the linear polarized waveforms.

Dual polarized horn antennas offer frequencies of 1GHz to 3GHz, 2GHz to 6GH-z, 6GHz to 18GHz, 18GHz to 40GHz, 22GHz to 44GHz with a nominal gain of 8-20dBi. The impedance of 50 Ohms. In Dual polarized horn antennas connections, the type is 2.92mm Connectors,  SMA Connectors, or N connectors.


Part No Frequency Range(GHz) Gain(dB) Max VSWR Maximum Continuous Power Impedance Connector Cross Polarization Isolation
ODPA60180 6-18 8-13dB <2.0:1 50W 50Ω SMA Connectors >30dB
ODPA180400-20mm 18-40  11-13dB <2.0:1 50W 50Ω 2 -2.92mm Connectors >30dB
ODPA180400-30mm 18-40  13-15dB <2.0:1 50W 50Ω 2 -2.92mm Connectors >30dB
ODPA220440 22-44  15-20dB <2.0:1 50W 50Ω 2 -2.92mm Connectors >30dB

Log Periodic antenna View More


Biconical antena View More

BICONICAL ANTENNAS


Biconical antennas. As an infinite structure, this antenna is truly broadband. However, its size and shape are impractical in real applications, and the truncation of its length limits its bandwidth performance. Modifying its rotationally symmetric shape to planar ones also causes a similar effect. Thus numerous design changes are considered and perfected to improve the modified antenna shapes and maintain the wideband characteristics.

The family of biconical antennas is generally broadband in input impedance. However, their radiation characteristics change with frequency. Therefore the design challenges are in maintaining the radiation performance satisfactory within their impedance bandwidth.

 

The biconical antenna is a simple modification of a dipole antenna, where the conductor thickness linearly increases with the distance from the origin or the antenna center. Mathematically, each arm of the antenna is an infinite conducting cone, and the geometry is a rotationally symmetric structure. In a symmetric biconical antenna the cone angles for the two arms are equal, as shown in FigureThe major difficulty with this antenna is its volume and especially its weight, which can be significant at low frequencies. The latter can be overcome by replacing the solid surfaces by wires, similar to other conducting surface antennas, like corner reflectors. Since for the fundamental TEM mode the induced currents on surface of this antenna travel in the radial direction, the conducting wires will be radial and the geometry will modify to the wire cones shown in Figure 

The rotational symmetry of these structures can cause azimuthal mode excitations that can introduce cross-polarization. In practice, the number of cones is preferable to be eight or larger to minimize the cross-polarization effects. This means that every 45◦ a cone wire must be located. In the truncated cones, the sharp bends at the cone end cause severe impedance discontinuities, and thus reflections that cause the bandwidth limitations. These reflection effects can be reduced by tapering the cone ends, rather than truncating them. Each truncated cone, therefore, becomes a dual back-to-back cone. However, the end cones usually are made much smaller, as shown in Figure  For the higher order modes, the currents will travel in both azimuthal and radial directions and the solid cones can only be replaced by wire meshes, to allow current flow in all directions.



Field Antennas View More

Antenna Mount And Accessories View More