20 dB Directional Couplers

Pulsar Microwave's 20 dB high frequency single directional couplers make up the CS20 series. They are available in narrow or wideband designs from 500 MHz to 60 GHz. They have a typical coupling tolerance of +/- 1 or 1.25 dB and most models handle 50 watts input power. These directional couplers are designed to operate in a 50-ohm system, and are optimized for best matching and high directivity with flat coupling response. Standard outlines are offered in SMA or N type female packages, either all of one type or combination with N type mainline and SMA coupled port.

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Frequency Range
(GHz)
Coupling
(dB)
Coupling
Flatness
(dB)
max.
I.L.
(dB)
max.
Directivity
(dB) min.
VSWR
max.
Power
In/Refl
(watts)
max.
Conn.
Type
P/N
Min Max
0.5 1.0 20.0 ± 1.25 ±0.75 0.20 25
1.15:1 50 SMA CS20-01-436/3 Add to RFQ
0.5 1.0 20.0 ± 1.25 ±0.75 0.20 22
1.15:1 50 N CS20-01-436/3N Add to RFQ
0.5 2.0 20.0 ± 1.00 ±0.75 0.35 20
1.20:1 50 N CS20-02-436/1N Add to RFQ
0.5 2.0 20.0 ± 1.00 ±0.75 0.35 23
1.20:1 50 SMA CS20-02-436/2 Add to RFQ
1.0 2.0 20.0 ± 1.25 ±0.75 0.20 25
1.10:1 50 SMA CS20-03-436/7 Add to RFQ
1.0 2.0 20.0 ± 1.25 ±0.75 0.20 20
1.10:1 50 N CS20-03-436/7N Add to RFQ
0.8 2.2 20.0 ± 1.25 ±0.75 0.35 23
1.20:1 50 SMA CS20-02A-436/3 Add to RFQ
0.8 2.2 20.0 ± 1.00 ±0.75 0.35 20
1.20:1 50 N CS20-02A-436/3N Add to RFQ
0.8 2.5 20.0 ± 1.25 ±0.70 0.40 20
1.20:1 50 SMA CS20-22-436/3 Add to RFQ
1.0 4.0 20.0 ± 1.00 ±0.75 0.40 23
1.20:1 50 SMA CS20-04-436/13 Add to RFQ
1.0 4.0 20.0 ± 1.00 ±0.75 0.40 18
1.20:1 50 N CS20-04-436/13N Add to RFQ
2.0 4.0 20.0 ± 1.25 ±0.75 0.20 22
1.15:1 50 SMA CS20-05-436/10 Add to RFQ
2.0 4.0 20.0 ± 1.25 ±0.75 0.20 18
1.15:1 50 N CS20-05-436/11N Add to RFQ
3.6 4.2 20.0 ± 1.00 ±0.30 0.50 15
1.40:1 50 SMA CS20-06-435/3 Add to RFQ
3.6 4.2 20.0 ± 1.00 ±0.30 0.50 18
1.40:1 50 N CS20-06-436/11N Add to RFQ
2.6 5.2 20.0 ± 1.25 ±0.75 0.20 20
1.25:1 50 SMA CS20-07-435/1 Add to RFQ
2.6 5.2 20.0 ± 1.25 ±0.75 0.20 18
1.25:1 50 N CS20-07-436/11N Add to RFQ
5.8 6.4 20.0 ± 1.00 ±0.30 0.50 15
1.40:1 50 SMA CS20-08-435/1 Add to RFQ
5.8 6.4 20.0 ± 1.00 ±0.30 0.50 18
1.40:1 50 N CS20-08-436/11N Add to RFQ
2.0 8.0 20.0 ± 1.00 ±0.75 0.40 15
1.25:1 50 N CS20-09-436/7N Add to RFQ
2.0 8.0 20.0 ± 1.00 ±0.75 0.40 20
1.25:1 50 SMA CS20-09-436/9 Add to RFQ
4.0 8.0 20.0 ± 1.25 ±0.75 0.25 20
1.30:1 50 SMA CS20-10-435/1 Add to RFQ
4.0 8.0 20.0 ± 1.25 ±0.75 0.25 17
1.30:1 50 N CS20-10-436/11N Add to RFQ
7.2 8.5 20.0 ± 1.00 ±0.30 0.50 15
1.40:1 50 SMA CS20-11-435/1 Add to RFQ
7.2 8.5 20.0 ± 1.00 ±0.30 0.50 15
1.40:1 50 N CS20-11-436/11N Add to RFQ
0.5 12.0 20.0 ± 1.00 ±0.80 1.00 15
1.50:1 25 SMA CS20-19-436/19 Add to RFQ
4.0 12.4 20.0 ± 1.00 ±0.40 0.50 17
1.30:1 50 SMA CS20-14-436/15 Add to RFQ
7.0 12.4 20.0 ± 1.00 ±0.50 0.30 17
1.30:1 50 SMA CS20-12-435/1 Add to RFQ
7.0 12.4 20.0 ± 1.00 ±0.50 0.50 15
1.30:1 50 N CS20-12-436/11N Add to RFQ
7.5 16.0 20.0 ± 1.25 ±0.75 0.50 15
1.40:1 50 SMA CS20-13-435/3 Add to RFQ
7.5 16.0 20.0 ± 1.25 ±0.75 0.50 13
1.40:1 50 N CS20-13-436/11N Add to RFQ
0.5 18.0 20.0 ± 1.00 ±1.00 0.90 0.5-12 GHz: 15
12-18 GHz:  12
1.50:1 25 SMA CS20-23-436/20 Add to RFQ
1.0 18.0 20.0 ± 1.00 ±0.50 0.80 1.0-12 GHz: 15
12-18 GHz:  12
1.50:1 25 SMA CS20-18-436/16 Add to RFQ
1.0 18.0 20.0 ± 1.00 ±0.50 0.80 1.0-12 GHz: 15
12-18 GHz:  12
1.50:1 25 N CS20-18-436/16N Add to RFQ
2.0 18.0 20.0 ± 1.00 ±0.50 0.60 2.0-12 GHz: 15
12-18 GHz:  12
1.40:1 50 SMA CS20-15-436/13 Add to RFQ
4.0 18.0 20.0 ± 1.00 ±0.50 0.60 4.0-12 GHz: 15
12-18 GHz:  12
1.40:1 50 SMA CS20-16-436/14 Add to RFQ
12.4 18.0 20.0 ± 1.00 ±0.50 0.50 15
1.40:1 50 SMA CS20-17-435/3 Add to RFQ
12.4 18.0 20.0 ± 1.00 ±0.50 0.50 12
1.40:1 50 N CS20-17-436/11N Add to RFQ
8.0 20.0 20.0 ± 1.00 ±0.80 1.00 12
1.50:1 25 SMA CS20-21-435/3 Add to RFQ
6.0 26.5 20.0 ± 1.00 ±0.80 0.70 13
1.55:1 20 2.92 CS20-50-435/4 Add to RFQ
0.5 27.0 20.0 ± 1.00 ±1.40 1.80 12
1.60:1 20 2.92 CS20-56-436/20 Add to RFQ
1.0 40.0 20.0 ± 1.00 ±1.50 1.60 10
1.80:1 20 2.92 CS20-53-436/13 Add to RFQ
2.0 40.0 20.0 ± 1.00 ±1.00 1.60 10
1.80:1 20 2.92 CS20-52-436/9 Add to RFQ
6.0 40.0 20.0 ± 1.00 ±1.00 1.20 10
1.70:1 20 2.92 CS20-51-435/4 Add to RFQ
6.0 50.0 20.0 ± 1.00 ±1.00 1.60 10
2.00:1 20 2.40 CS20-54-435/4 Add to RFQ
6.0 60.0 20.0 ± 1.00 ±2.00 1.80 7
2.50:1 20 1.85 CS20-55-435/4 Add to RFQ
Custom frequency bands and optimized specifications available.
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Using Custom Specs or by P/N
Notes:
Insertion loss does not include coupling loss.
Input power is specified for load VSWR better than 1.20:1.