Dolph Microwave offers a standard product line of waveguide twist covering waveguide sizes WR10 thru WR430. Twist angle, twist direction and flange types can be custom made as per customer's specific requirements.
Flange type: Multiple types available - see Dolph Microwave Flanges page.
Finish: Corrosion protection plus black/grey top coat.
Twist angle other than 90˚ available on request.
Twist direction option of Dolph Microwave unless otherwise specified.
Model No* |
Freq Range (GHz) |
VSWR (Max) |
Minimum Length (mm) | WG Type |
Flange |
Material | |
IEC | EIA | ||||||
DH-22WTA… | 1.72-2.61 | 1.10 | 800 | R22 | WR430 | FDH/FDM | Al/Cu |
DH-26WTA… | 2.17-3.30 | 1.10 | 400 | R26 | WR340 | FDH/FDM | Al/Cu |
DH-32WTA… | 2.60-3.95 | 1.10 | 300 | R32 | WR284 | FDH/FDM | Al/Cu |
DH-40WTA… | 3.22-4.90 | 1.10 | 250 | R40 | WR229 | FDH/FDM | Al/Cu |
DH-48WTA… | 3.94-5.99 | 1.10 | 200 | R48 | WR187 | FDH/FDM | Al/Cu |
DH-58WTA… | 4.64-7.05 | 1.10 | 170 | R58 | WR159 | FDH/FDM | Al/Cu |
DH-70WTA… | 5.38-8.17 | 1.10 | 150 | R70 | WR137 | FDH/FDM | Al/Cu |
DH-84WTA… | 6.57-9.99 | 1.10 | 120 | R84 | WR112 | FBP/FBM/FBE | Al/Cu |
DH-100WTA… | 8.20-12.40 | 1.10 | 60 | R100 | WR90 | FBP/FBM/FBE | Al/Cu |
DH-120WTA… | 9.84-15.0 | 1.10 | 60 | R120 | WR75 | FBP/FBM/FBE | Al/Cu |
DH-140WTA… | 11.9-18.0 | 1.10 | 50 | R140 | WR62 | FBP/FBM/FBE | Al/Cu |
DH-180WTA… | 14.5-22.0 | 1.10 | 50 | R180 | WR51 | FBP/FBM/FBE | Al/Cu |
DH-220WTA… | 17.6-26.7 | 1.10 | 50 | R220 | WR42 | FBP/FBM/FBE | Al/Cu |
DH-260WTA… | 21.7-33.0 | 1.15 | 50 | R260 | WR34 | FBP/FBM/FBE | Al/Cu |
DH-320WTA… | 26.3-40.0 | 1.15 | 50 | R320 | WR28 | FBP/FBM/FBE | Al/Cu |
DH-400WTA… | 32.9-60.1 | 1.15 | 50 | R400 | WR22 | FUGP | Cu |
DH-500WTA… | 39.2-59.6 | 1.15 | 50 | R500 | WR19 | FUGP | Cu |
DH-620WTA… | 49.8-75.8 | 1.15 | 50 | R620 | WR15 | FUGP | Cu |
DH-740WTA… | 60.5-91.9 | 1.15 | 50 | R740 | WR12 | FUGP | Cu |
DH-900WTA… | 73.8-112 | 1.15 | 50 | R900 | WR10 | FUGP | Cu |
*Indicates Model Number. See Ordering Information for complete part number.
Frequency range
Waveguide size
Twist degree
Length requirement in mm
Flange type: Flat or groove
Color: White/grey/black or others
Material: Al/Cu
Waveguide twists is normally used to turn wave polarization by a specific degree. To avoid the undue distortion on the waveform, The twis is gradual and the distance should be bigger than two wavelengths.
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