This WR42 standard waveguide Ka-band feed horn is specially designed for offset parabolic antenna & prime focus parabolic antenna, matched with Ka-band LNB receiver. It converges satellite electromagnetic wave efficiently, features low insertion loss, high polarization isolation, excellent VSWR impedance matching and outdoor waterproof performance. Widely applied in satellite broadband, satellite TV receiving, government private network, emergency communication and RF testing industries.

Basic Standard Parameter

Item	Spec	Remark
Waveguide Model	WR42	Standard rectangular waveguide
Flange Type	R220 / UG-595/U	Universal industry standard interface
Cut-off Frequency	14.9GHz	Exclusive for Ka-band application
Operating Frequency	18.0GHz ~ 26.5GHz	Full Ka downlink receiving frequency range
Polarization Mode	Single linear / Dual linear polarization	Customizable structure available
Matching Antenna	1. Offset antenna: 0.3m-1.2m 2. Prime focus parabolic antenna: 0.6m-5m	Full caliber satellite dish adaptation

Core RF Electrical Index

Item	Typical Value	Max Limit	Function Description
Insertion Loss	≤0.35dB (Full band average)	≤0.5dB	Low signal attenuation, improve C/N ratio, reduce system noise floor
VSWR (Waveguide Port)	≤1.20	≤1.25	Good impedance matching, avoid signal reflection & LNB unlock
VSWR (LNB Interface)	≤1.25	≤1.30	Stable link gain without signal fluctuation
Polarization Isolation(Dual Polarization)	≥25dB Full band	≥22dB Min	Suppress H/V polarization crosstalk, reduce communication BER
Cross Polarization Discrimination(XPD)	≥22dB	≥20dB	Effectively resist adjacent frequency interference
Irradiation Efficiency	≥82%	≥78%	Maximize antenna gain utilization efficiency
Additional Noise Figure	≤0.2dB	≤0.3dB	No deterioration on original LNB noise performance
Power Capacity	Average:30W / Peak:100W	—	Designed for long-term outdoor powered operation

Mechanical & Environmental Parameter

Material：Brass cavity, inner wall gold-plated, flange nickel-plated for ultra-low high-frequency loss
Protection Grade：IP65
Working Temperature：-40℃ ~ 65℃
Storage Temperature：-50℃ ~ 70℃
Structure Feature：Integral sealing waterproof structure, anti-condensation design

Antenna Adaptation Description

5.1 Offset Antenna Adopts calibrated offset focal radiation pattern without dish shielding loss. Compatible with 0.3m-1.2m small offset dish, widely used for household rooftop terminal, vehicle-mounted and yacht portable satellite terminal. 5.2 Prime Focus Parabolic Antenna Supports central focus uniform irradiation to obtain high receiving gain. Compatible with 0.6m-5m large-caliber parabolic dish, applied for fixed ground station, broadcast receiving station and government outdoor communication station.

Application Scenarios

6.1 Civil Ka Satellite Broadband Home satellite internet for remote mountain, island and non-fiber rural areas; RV, yacht and maritime mobile satellite network; civilian VSAT user terminal networking. 6.2 Radio & Media Industry TV station Ka-band 4K/HD satellite signal receiving; outdoor live broadcast video backhaul; temporary field communication link for media events. 6.3 Government & Industrial Private Network Fixed satellite monitoring link for border, oil field and mine; data transmission for unattended forestry and meteorology monitoring stations; temporary satellite communication node for flood, earthquake emergency rescue. 6.4 Laboratory RF Test & Calibration Microwave anechoic chamber antenna pattern and gain calibration; performance testing for Ka-band waveguide components and LNB finished products; communication system debugging. 6.5 Military & Aerospace Special Communication Outdoor anti-interference encrypted satellite receiving station; lightweight shipborne and airborne satellite terminal; auxiliary signal receiving equipment for aerospace projects.

Product Core Advantages
Ultra-low insertion loss ≤0.35dB, maximally retain weak satellite signal, sufficient link margin under rainy and foggy weather
Optimized low VSWR design, stable impedance matching, prevent LNB frequency loss, support 24/7 long-term stable operation
High polarization isolation ≥25dB, eliminate polarization crosstalk, support multi-channel satellite signal parallel receiving
Standard WR42 universal interface, compatible with global mainstream Ka LNB models, easy installation and replacement
IP65 waterproof and wide-temperature structure, adapt to harsh outdoor environments including coastal, desert and alpine areas