Waveguide Probe Antenna 7 dBi Typ.Gain, 15-22GHz Frequency Range RM-WPA51-7

Short Description:

The RM-WPA51-7 is a probe antenna that operates from 15GHz to 22GHz. The antenna offers 7 dBi typical gain. The antenna supports linear polarized wave-forms. It is designed for planar near-field measurement, cylindrical near-field measurement and calibration.

Product Detail

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Product Tags

Specifications

RM-WPA51-7
Item	Specification		Units
Frequency Range	15-22		GHz
Gain	7 Typ.		dBi
VSWR	≤2
Polarization	Linear
Waveguide Size	WR51
3dB BW	H-Plane:60 Typ. E-Plane:90 Typ.
Interface	FBP180(F Type)	SMA-Female(C Type)
Size(LWH)	221.9*Ø60(±5)		mm
Weight	0.05(F Type)	0.072(C Type)	Kg
Body Material	Al
C Type Power Handling, CW	50		W
C Type Power Handling, Peak	100		W

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A Waveguide Probe Antenna is a common type of internal feed antenna, primarily used within metallic rectangular or circular waveguides at microwave frequencies. Its fundamental structure consists of a small metal probe (often cylindrical) inserted into the waveguide, oriented parallel to the electric field of the excited mode.

Its operating principle is based on electromagnetic induction: when the probe is excited by the inner conductor of a coaxial line, it generates electromagnetic waves within the waveguide. These waves propagate along the guide and are eventually radiated from an open end or slot. The probe’s position, length, and depth can be adjusted to control its impedance matching with the waveguide, thereby optimizing performance.

The key advantages of this antenna are its compact structure, ease of manufacture, and suitability as an efficient feed for parabolic reflector antennas. However, its operational bandwidth is relatively narrow. Waveguide probe antennas are widely used in radar, communication systems, and as feed elements for more complex antenna structures.

probe antenna