Double Ridged Waveguide Probe Antenna 5 dBi Typ.Gain, 6-18GHz Frequency Range RM-DBWPA618-5

Short Description:

The RM-DBWPA618-5 is a double ridged broadband waveguide probe antenna that operates from 6GHz to 18GHz with a 5 dBi typical gain and low VSWR 2.0:1. The antenna supports linear polarized waveforms. It is designed for planar near-field measurement, cylindrical near-field measurement and calibration.

Product Detail

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Specifications

RM-DBWPA618-5
Item	Specification	Units
Frequency Range	6-18	GHz
Gain	5 Typ.	dBi
VSWR	≤2.5
Polarization	Linear
3dB Beamwidth	H-Plane:74 Typ. E-Plane:95
Connector	SMA-Female
Body Material	Al
Power Handling, CW	50	W
Power Handling, Peak	100	W
Size(LWH)	329*Ø90(±5)	mm
Weight	0.283	Kg
	1.014(with I-type bracket)
	0.545(with L-type bracket)
	0.792(with absorber)
	1.577(with I-type bracket and absorber)

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A Double Ridged Waveguide Probe Antenna is a broadband antenna that combines a double-ridged waveguide with a probe feed mechanism. It features parallel ridge-like protrusions on the top and bottom walls of a standard rectangular waveguide, which dramatically expands its operating bandwidth.

The operating principle is: the double-ridge structure lowers the cutoff frequency of the waveguide, enabling it to propagate electromagnetic waves over a much wider frequency range. Simultaneously, the probe acts as the exciter, converting the coaxial signal into the electromagnetic field within the waveguide. This combination allows the antenna to maintain good performance across multiple octaves, overcoming the narrow bandwidth limitation of traditional waveguide probe antennas.

Its key advantages are ultra-wideband characteristics, a relatively compact structure, and high power-handling capacity. However, its design and manufacturing are more complex, and it may have slightly higher loss than standard waveguides. It is widely used in Electromagnetic Compatibility (EMC) testing, wideband communications, spectrum monitoring, and radar systems.