Waveguide Probe Antenna 7 dBi Typ.Gain, 18-26.5GHz Frequency Range RM-WPA42-7

Short Description:

The RM-WPA42-7 is a probe antenna that operates from 18GHz to 26.4GHz. The antenna offers 7 dBi typical gain. The antenna supports linear polarized wave-forms. The input of this antenna is a WR-42 waveguide with a FBP220 flange.

Product Detail

ANTENNA KNOWLEDGE

Product Tags

Features

● WR-42 Rectangular Waveguide Interface

● Linear Polarization

● High Return Loss

● Precisely Machined

Specifications

RM-WPA42-7
Item	Specification			Units
Frequency Range	18-26.5			GHz
Gain	7 Typ.			dBi
VSWR	≤2
Polarization	Linear
Cross-polarization Isolation	50 Typ.			dB
Waveguide Size	WR-42
Interface	FBP220(F Type)		SMA-F(C Type)
C Type Size(LWH)	130.64646(±5)			mm
Weight	0.015(F Type)	0.043(C Type)		kg
Body Material	Al
Surface Treatment	Paint
C Type Power Handling, CW	50			w
C Type Power Handling, Peak	3000			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