RF Couplers

Overview

Frontgrade offers a full range of RF Couplers for your designs including directional and hybrid couplers.

Our forward and reverse dual directional stripline couplers as well as 90 and 180 degree hybrid couplers, are available in 6 dB, 10 dB, 20 dB and 30 dB coupling values. These units feature high directivity and low VSWR and are conservatively rated to ensure the most reliable service and performance.

Directional

Directional Couplers

We provide miniature stripline directional couplers. Frontgrade's CAx Series are available in 6 dB, 10 dB, 20 dB, and 30 dB coupling values. These units feature high directivity and low VSWR and are conservatively rated to ensure the most reliable service and performance. Our directional couplers offer unequalled size and performance. The volume of these couplers makes them ideally suited for applications involving high density packaging.

Download Directional Couplers Datasheet

CAES RF Directional Coupler
Part number Frequency
Range
Coupling
Value (dB)
Frequency
Flatness (dB)
Directivity
Min (dB)
Input/Output
VSWR Max (Ratio)
Loss Above
Coupling (dB)
Peak
Power (kW)
Average
Power (Watts)
CA-511 0.5 - 1.0 10 ±0.75 20 1.2 0.15 3 50
CA-512 0.5 – 1.0 20 ±0.75 20 1.2 0.15 3 50
CA-513 0.5 – 1.0 30 ±0.75 20 1.2 0.15 3 50
CA-516 0.5 – 1.0 6 ±0.75 20 1.2 0.15 3 50
CA-521 0.5 – 2.0 10 ±0.75 20 1.2 0.2 3 50
CA-522 0.5 – 2.0 20 ±0.75 20 1.2 0.2 3 50
CA-523 0.5 – 2.0 30 ±0.75 20 1.2 0.2 3 50
CA-526 0.5 – 2.0 6 ±0.75 20 1.2 0.2 3 50
CA-591 1.0 – 2.0 10 ±0.75 20 1.2 0.2 3 50
CA-592 1.0 – 2.0 20 ±0.75 20 1.2 0.2 3 50
CA-593 1.0 – 2.0 30 ±0.75 20 1.2 0.2 3 50
CA-596 1.0 – 2.0 6 ±0.75 20 1.2 0.2 3 50
CA-671 2.0 – 4.0 10 ±0.75 20 1.25 0.2 3 40
CA-672 2.0 - 4.0 20 ±0.75 20 1.25 0.2 3 40
CA-673 2.0 - 4.0 30 ±0.75 20 1.25 0.2 3 40
CA-676 2.0 - 4.0 6 ±0.75 20 1.25 0.2 3 40
CA-691 2.0 - 8.0 10 ±0.75 17 1.3 0.3 2 20
CA-692 2.0 - 8.0 20 ±0.75 17 1.3 0.3 2 20
CA-693 2.0 - 8.0 30 ±0.75 17 1.3 0.3 2 20
CA-696 2.0 - 8.0 6 ±0.75 17 1.3 0.3 2 20
CA-751 4.0 - 8.0 10 ±0.75 18 1.25 0.3 3 40
CA-752 4.0 - 8.0 20 ±0.75 18 1.25 0.3 3 40
CA-753 4.0 - 8.0 30 ±0.75 18 1.25 0.3 3 40
CA-756 4.0 - 8.0 6 ±0.75 18 1.25 0.3 3 40
CA-771 6.0 - 18.0 10 ±0.75 14 1.45 0.55 2 20
CA-772 6.0 - 18.0 20 ±0.75 14 1.45 0.55 2 20
CA-773 6.0 - 18.0 30 ±0.75 14 1.45 0.55 2 20
CA-776 6.0 - 18.0 6 ±0.75 14 1.45 0.55 2 20
CA-791 7.0 - 12.4 10 ±0.50 17 1.3 0.45 2 30
CA-792 7.0 - 12.4 20 ±0.50 17 1.3 0.45 2 30
CA-793 7.0 - 12.4 30 ±0.50 17 1.3 0.45 2 30
CA-796 7.0 - 12.4 6 ±0.50 17 1.3 0.45 2 30
CA-871 8.0 - 18.0 10 ±0.70 14 1.45 0.55 2 20
CA-872 8.0 - 18.0 20 ±0.70 14 1.45 0.55 2 20
CA-873 8.0 - 18.0 30 ±0.70 14 1.45 0.55 2 20
CA-876 8.0 - 18.0 6 ±0.70 14 1.45 0.55 2 20
CA-911 12.4 - 18.0 10 ±0.50 15 1.4 0.55 2 30
CA-912 12.4 - 18.0 20 ±0.50 15 1.4 0.55 2 30
CA-913 12.4 - 18.0 30 ±0.50 15 1.4 0.55 2 30
CA-916 12.4 - 18.0 6 ±0.50 15 1.4 0.55 2 30
Hybrid

Hybrid Couplers

Frontgrade's Hybrid Couplers feature high directivity and low VSWR and are conservatively rated to ensure the most reliable service and performance. The volume of these couplers makes them ideally suited for applications involving high density packaging.

Download Quad Hybrid Couplers Datasheet

CAES Hybrid Coupler
Part number Phase Shift
(90 or 180)
Frequency
Range
Nominal
Coupling (dB)
Max Deviation from
Nominal Coupling (dB)
Max Insertion
Loss (dB)
Min Isolation (dB) VSWR (Max) Phase
Balance (Degrees)
MH-24 180 0.25 - 0.5 3.0 +0.25/-0 ±0.50 0.25 20 1.30:1 ±4.0
MH-29 180 0.5 - 1.0 3.0 +0.25/-0 ±0.50 0.25 20 1.30:1 ±4.0
MH-33 180 1.0 - 2.0 3.0 +0.30/-0 ±0.50 0.3 18 1.30:1 ±4.0
MH-39 180 2.0 - 4.0 3.0 +0.30/-0 ±0.55 0.3 18 1.35:1 ±4.0
MH-46 180 4.0 - 8.0 3.0 +0.35/-0 ±0.60 0.35 17 1.45:1 ±4.0
MH-58 180 8. 0 - 16.0 3.0 +0.45/-0 ±0.60 0.45 15 1.50:1 ±5.0
MH-60 180 6.0 - 18.0 3.0 +0.45/-0 ±0.60 0.45 15 1.50:1 ±5.0
QH-19 90 2.0 - 8.0 3.0 +0.15/-0 ±0.40 0.15 22 1.15:1 ±1.0
QH-26 90 0.25 - 0.5 3.0 +0.15/-0 ±0.40 0.15 22 1.15:1 ±1.0
QH-28 90 0.5 - 1.0 3.0 +0.15/-0 ±0.40 0.15 22 1.20:1 ±1.0
QH-31 90 1.0 - 2.0 3.0 +0.15/-0 ±0.40 0.15 22 1.20:1 ±2.0
QH-36 90 2.0 - 4.0 3.0 +0.20/-0 ±0.45 0.2 22 1.20:1 ±2.5.0
QH-45 90 4.0 - 8.0 3.0 +0.25/-0 ±0.50 0.25 20 1.30:1 ±3.0
QH-51 90 7.0 - 12.4 3.0 +0.35/-0 ±0.50 0.35 17 1.35:1 ±4.0
QH-55 90 0.5 - 2.0 3.0 +0.35/-0 ±0.50 0.35 17 1.35:1 ±4.0
QH-57 90 8.0 - 16.0 3.0 +0.50/-0 ±0.60 0.5 16 1.45:1 ±5.0
QH-58 90 12.0 - 18.0 3.0 +0.50/-0 ±0.60 0.5 16 1.50:1 ±5.0
QH-88 90 8.0 - 18.0 3.0 +0.50/-0 ±0.60 0.5 16 1.50:1 ±5.0
Downloads

Downloads

Support & Contact
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Our factory team is available to meet your challenging design specifications, enabling superior performance with the most efficient profile. Please connect with a design specialist to realize your optimum solution.
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CAES Custom and Standard RF Couplers

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