Mi-Wave · Waveguide to Coax Adapters
Waveguide to Coax Adapters
Right-angle adapters covering every waveguide band from 8.2 to 110 GHz with low loss
The Mi-Wave 410 Series is a right-angle adapter between rectangular waveguide and a coaxial connector. The 90-degree layout suits crowded test setups and rack integration where an in-line launch will not fit. Models run from X-band to W-band (8.2 to 110 GHz) with SMA, K (2.92 mm), 2.4 mm, 1.85 mm and 1.00 mm connectors, so lab measurement and OEM integration are both served. Insertion loss and VSWR are low across the line, and a production grade is offered alongside the laboratory grade. Evencat is an authorized Mi-Wave distributor in Taiwan.
Overview
The 410 Series right-angle adapter carries a signal between a rectangular waveguide port and a standard coaxial connector, and shows up wherever a VNA, radar, SATCOM or 5G test bench has to join the two media. Coverage runs from X-band (8.2 GHz) to W-band (110 GHz) in WR-90 through WR-10, with typical insertion loss of 0.3 to 1.2 dB and return loss of 15 to 20 dB. Every model carries a UG flange on the waveguide side; on the coax side you can choose SMA, K (2.92 mm), 2.4 mm, 1.85 mm or 1.00 mm in either gender. A lower-cost production version is available for OEM quantities, and non-standard sizes or connector pairings can be made to order. When you specify an adapter, match the connector to the instrument port first, then check the power rating: the X-band N-female part is rated at 400 W while the mm-wave parts with precision connectors are rated at 10 W.
Key specifications
| Series | 410 Series (right-angle waveguide to coax adapter) |
|---|---|
| Frequency range | 8.2 GHz – 110 GHz (all waveguide bands) |
| Insertion loss (typical) | 0.3 – 1.2 dB (by band) |
| Return loss | 15 – 20 dB (by model) |
| Power handling | 5 – 400 W (by band and connector; most mm-wave models 10 W, X-band N-female 400 W) |
| Waveguide sizes | WR-90, WR-75, WR-62, WR-51, WR-42, WR-34, WR-28, WR-22, WR-19, WR-15, WR-12, WR-10 |
| Coaxial connectors | SMA (F/M), K/2.92 mm (F/M), 3.5 mm, 2.4 mm (F/M), 1.85 mm (F/M), 1.00 mm (F/M) |
| Flanges | UG-39/U, UG-419/U, UG-595/U, UG-596, UG-599/U, UG-383/U, UG-385/U, UG-387/U and others |
| Bands | X, Ku, K, WR-34, Ka, Q, U, V, E and W bands |
| Representative model (Ka-band) | 410A/599/KF: 26.5–40 GHz, insertion loss 0.4 dB, return loss 20 dB, 10 W, WR-28, K female |
| Representative model (W-band) | 410W/387/1.00mmF: 75–110 GHz, insertion loss 1.2 dB, return loss 15 dB, 10 W, WR-10, 1.00 mm female |
| Representative model (X-band) | 410X/39/SMAF: 8.2–12.4 GHz, insertion loss 0.4 dB, return loss 17 dB, 150 W, WR-90, SMA female |
Features
Right-angle layout
The waveguide port and the coaxial connector sit at 90 degrees, which eases cabling and integration in a rack or a crowded fixture.
8.2–110 GHz in one series
From X-band to W-band the series covers the mm-wave bands used in satellite, radar and 5G test, so one product family meets most needs.
Low loss, low VSWR
Typical insertion loss of 0.3 to 1.2 dB and return loss of 15 to 20 dB keep the signal intact across the waveguide-to-coax interface.
Connector choice
SMA, K (2.92 mm), 2.4 mm, 1.85 mm and 1.00 mm connectors in either gender, so the adapter mates with test instruments from any vendor.
Production and laboratory grades
A lower-cost production version suits OEM volume, while the laboratory grade meets the tighter demands of precision measurement.
Custom designs
Mi-Wave builds adapters with special dimensions or connector pairings to order, which gives the system designer room to work.
Typical applications
Vector network analysis
VNA interface for waveguide components
To measure S-parameters of a waveguide filter or attenuator at mm-wave, for example in W-band (75–110 GHz), the engineer uses a right-angle adapter to bring the DUT's rectangular port onto the analyzer's coaxial test port. The adapter resolves the mismatch between transmission media while keeping the path matched and its insertion loss low.
Radar and satellite communications
RF front-end assembly in radar and ground stations
In a phased-array radar or earth-station front end, the right-angle adapter is the junction between the waveguide feed and a coaxial source or LNA, letting the routing turn vertically inside a tight enclosure. Ka-band (26.5–40 GHz) and higher aerospace and defense systems use it routinely.
R&D test bench
Building mixed coax and waveguide test fixtures
A lab that must connect existing coaxial instruments, such as signal generators and spectrum analyzers, to new waveguide parts or antenna samples reaches for a right-angle adapter. It lets the team assemble a wideband bench from X-band to E-band without replacing the instrument set, which shortens prototype verification.
Options and configuration
Choose the band, coaxial connector type and gender you need; the selections are collected into a list and carried into the quote form.
Band and waveguide size
Coaxial connector
Custom configurations
Downloads
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