Basics Selection 17.7GHz To 23.55GHz RF Directional Coupler
Brand Name:Sinoscite
Certification:ISO 9001:2015
Model Number:CP17.7-21GS-3150
Minimum Order Quantity:1 Piece
Delivery Time:4 weeks
Payment Terms:L/C, D/A, D/P, T/T, Western Union, MoneyGram
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Location:
Chengdu Sichuan China
Address:
Huidu Headquarters Industrial Park, No. 4 Xinye Road, High-tech West District, Chengdu City, Sichuan Province, CN
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Product Details
Passive Devices RF Coupler Basics & Selection RF & Microwave Couplers
Quick Details
| 1 | Product Type | Coupler |
| 2 | Model | CP17.7-21GS-3150 |
| 3 | Working Frequency | 17.7-23.55GHz |
| 4 | Insertion Loss | ≤1.1dB |
| 5 | In-Band Fluctuation | ≤0.5dB |
| 6 | Coupling | 20±1.5dB |
| 7 | Coupling Consistency | ≤±0.8dB |
| 8 | Directionality | ≥15dB |
| 9 | Input And Output VSWR | ≤1.4 |
| 10 | Coupled Port VSWR | ≤1.5 |
| 11 | Input And Output Interface | Coaxial (2.92-K) |
| 12 | Coupling Port Output | Coaxial (2.92-K) |
| 13 | Material | Brass silver plated |
| 14 | Surface Treatment | Black paint |
Working principle
The power transmitted in the main line is coupled to the secondary
line through a variety of ways, and interferes with each other and
only transmits in one direction in the secondary line.
Figure 1 shows three typical coupling structures of rectangular
waveguide directional couplers. a is the two-hole coupling
separated by 1/4 guide wavelength; b is the double series branch
line coupling with the spacing and length equal to 1/4 guide
wavelength; c is the continuous coupling of TE and TE propagation
modes in the crack area. Take the two structures of a and b as
examples. After the signal input from port ① is coupled to the
secondary line in two ways, it is superimposed in phase due to the
same stroke in the direction of port ④, and there is output; in the
direction of ③, the stroke differs by 1/2 guide wavelength The
reverse phase cancellation is isolated without output.
Figure 2 shows two typical coupling structures of the microstrip
directional coupler. A is the dual parallel branch line coupling
with the pitch and length equal to 1/4 of the lead wavelength, and
b is the continuous coupling of the electric and magnetic fields in
the parallel region. Taking the structure of b as an example, the
signal input from port ① is coupled to the two ports of the
secondary line by electric field to generate in-phase induced
voltage, and magnetic field coupling generates reverse-phase
induced voltage. The result is added at port ④ and there is output,
and at ③, it is cancelled and there is no output in isolation.
In addition, it can also form a directional coupler for other
transmission lines (Figure 3).
Figure 1
Figure 2
Figure 3
Basics Selection 17.7GHz To 23.55GHz RF Directional Coupler
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