Product/Service

RF / Microwave Attenuators

Source: Trilithic Inc.
Trilithic offers one of the widest selections of attenuators and test components available. Our general capabilities extend from DC to 18 GHz with power handling up to 1,000 Watts. Most of the products in this section are stocked at the factory. If you have special requirements for any type of attenuator not listed within our web site, please call us for technical assistance

Trilithic offers one of the widest selections of attenuators and test components available. Our general capabilities extend from DC to 18 GHz with power handling up to 1,000 Watts. Most of the products in this section are stocked at the factory. If you have special requirements for any type of attenuator not listed within our web site, please call us for technical assistance.

Solid State Programmable Attenuators

Model EPA-127-3 SMA

Features:

  • Solid State Reliability 30 MHz to 3 GHz
  • Low Insertion Loss
  • High Switching Speed
  • Price Competitive

Trilithic's new Solid State Programmable Attenuator operates from 30 MHz to 3 GHz. The attenuation range is 0 to 127 dB in 1 dB steps. This product offers low insertion loss, 20 microseconds switching speed and it has TTL control. Please contact the factory for custom needs.

Specifications

EPA-127-3 SMA
Frequency Range 30 MHz to 3 GHz
Impedance 50 Ohms nominal
Attenuation Range 0 to 127 dB in 1 dB steps
Attenuation Steps 1, 2, 4, 8, 16, 32 and 64 dB
VSWR 1.6:1 max
Accuracy
1, 2, 4, 8 dB /- 0.3 dB to 2 GHz
1, 2, 4, 8 dB /- 0.4 dB to 3 GHz
16, 32, 64 dB /- 0.5 dB or 3%
(whichever is greater)
Insertion Loss 6 dB maximum to 2000 MHz
8 dB maximum to 3000 MHz
RF Input Power 15 dBm operating
30 dBm no damage
Switching Speed 20 microseconds maximum
DC Supply 15 Vdc @ 80 mA nominal
-15 Vdc @ 80 mA nominal
DC/Control connector 3M 3793-5303
RF Connectors SMA Female
Operating Temperature Range 0 ° C to 70 ° C
Programming (7lines) TTL Low for Thru Path
TTL High for Attenuation

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High Powered Fixed Attenuators

Trilithic's high power fixed attenuators offer RF input power from 10 Watts up to 1000 Watts covering broad frequency ranges to 4 GHz. Standard attenuation values (3, 6, 10, 20 and 30) are available with a Type N male /female connector configuration in 4 weeks or less. Other attenuation values and connector configurations are available upon request.

Trilithic's newest series of HFP Fixed Attenuators are ideal for applications requiring up to 50 Watts of CW RF input power handling capability with accurate attenuation over a DC-4 GHz frequency range. Standard dB values are available for immediate delivery with other dB values available in 4-5 weeks.

 

Specifications - High Powered Fixed Attenuators
  HFP-510-4 HFP-525-4 HFP-550-4 HFP-510-18 HFP-5100-3 HFP-5150-3 HFP-5500-3 HFP-51000-3
Impedance 50 Ohms 50 Ohms 50 Ohms 50 Ohms 50 Ohms 50 Ohms 50 Ohms 50 Ohms
Frequency Range DC to 4 GHz DC to 4 GHz DC to 4 GHz DC to1 8 GHz DC to 3 GHz DC to 3 GHz DC to 3 GHz DC to 3 GHz
Attenuation Values 3, 6, 10, 20, 30 3, 6, 10, 20, 30 3, 6, 10, 20, 30 3, 6, 10, 20, 30, 40 3, 6, 10, 20, 30 3, 6, 10, 20, 30 3, 6, 10, 20, 30 3, 6, 10, 20, 30
Power 10 Watts 25 Watts 50 Watts   100 Watts 150 Watts 500 Watts 1000 Watts
Connector Types N male/N female N male/N female N male/N female N M/F N M/F N M/F N M/F N M/F
Input Power       10 Watts CW      
Accuracy                
DC - 1 GHz /-.25dB (3, 6, 10, 20 dB) /-.25dB (3, 6, 10, 20 dB) /-.25dB (3, 6, 10, 20 dB)   1-3 dB, /-0.3 dB 1-3 dB, /-0.3 dB 1-3 dB, /-0.3 dB 1-3 dB, /-0.3 dB
/-.50 dB (30 dB) /-.50 dB (30 dB) /-.50 dB (30 dB)   6 & 10 dB, /-0.4 dB 6 & 10 dB, /-0.4 dB 6 & 10 dB, /-0.4 dB 6 & 10 dB, /-0.4 dB
        20 dB, /-0.5 dB 20 dB, /-0.5 dB 20 dB, /-0.5 dB 20 dB, /-0.5 dB
        30 dB, /- 0.8 dB 30 dB, /-0.8 dB 30 dB, /-0.8 dB 30 dB, /-0.8 dB
1 - 4 GHz /-.50dB (3, 6, 10, 20 dB) /-.50dB (3, 6, 10, 20 dB) /-.50dB (3, 6, 10, 20 dB)          
/-.75 dB (30 dB) /-.75 dB (30 dB) /-.75 dB (30 dB)          
1 - 3 GHz         1-3 dB, /-0.5dB 1-3 dB, /-0.5dB 1-3 dB, /-0.5dB 1-3 dB, /-0.5dB
        6 dB, /-0.6 dB 6 dB, /-0.6 dB 6 dB, /-0.6 dB 6 dB, /-0.6 dB
        10 dB, /-0.8 dB 10 dB, /-0.8 dB 10 dB, /-0.8 dB 10 dB, /-0.8 dB
            20 dB, /-1.0 dB 20 dB, /-1.0 dB
        20 dB, /-1.0 dB 20 dB, /-1.0 dB 20 dB, /-1.0 dB 20 dB, /-1.0 dB
Max. VSWR         30 dB, /-1.3 dB 30 dB, /-1.3 dB    
DC to 1 GHz 1.15:1 1.15:1 1.15:1   1.10:1 1.10:1 1.10:1 1.10:1
1 to 4 GHz 1.35:1 1.35:1 1.35:1          
1 to 3 GHz         1.30:1 1.30:1 1.30:1 1.30:1
18 GHz       1.35:1        
Weight 9 oz. 1 lb. 1.45 lbs.   45 Oz. 5.5 Lb. 7.9 Lbs. 26.5 Lbs.

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High Power High Frequency Fixed Attenuators

The HFP High Power High Frequency attenuators are bidirectional, convection air-cooled and offer broad bandwidth and low VSWR. These units are rated from 5 to 50 Watts CW and operate to 4 and 6 GHz. Connector options vary by model.

 

Specifications - High Power High Frequency Fixed Attenuators
  HFP-55 HFP-510 HFP-5150-8 HFP-510-18 HFP-520 HFP-525 HFP-550
Attenuation Values 0-30 dB 0-40 dB 3, 6, 10, 20, 30, 40 3, 6, 10, 20, 30, 40 3, 6, 10, 20 and 30 dB 3-40 dB 3-40 dB
31-60 dB            
Impedance 50 Ohms 50 Ohms 50 Ohms 50 Ohms 50 Ohms 50 Ohms 50 Ohms
Frequency Range DC to 6 GHz DC to 6 GHz DC to 8 GHz DC to 18GHz DC to 4 GHz DC to 6 GHz DC to 6 GHz
Accuracy 0-6 dB, /- 0.3 dB 0-6 dB, /- 0.3 dB     3-20 dB, /- 0.25 dB 3-6 dB, /- 0.3 dB 3-6 dB, /- 0.3 dB
7-20 dB, /- 0.5 dB 7-20 dB, /- 0.5 dB     21-30 dB, /- 0.75 dB 7-20 dB, /- 0.5 dB 7-20 dB, /- 0.5 dB
21-30 dB, /- 0.75 dB 21-40 dB, /- 0.7 dB     3-20 dB, /- 0.5 dB 21-30 dB, /- 0.75 dB 21-30 dB, /- 0.75 dB
31-60 dB, /- 1.5 dB       21-30 dB, /- 0.75 dB 31-40 dB, /- 1.0 dB 31-40 dB, /- 1.0 dB
Max. VSWR           1.20:1 1.25:1
DC to 1 GHz         1.10:1    
DC to 4 GHz 1.15:1            
Dc to 6 GHz   1.20:1          
1 GHz to 4 GHz         1.15:1    
4 GHz to 6 GHz 1.20:1            
4 GHz       1.20:1      
8 GHz       1.30:1      
18 GHz       1.35:1      
Power     150 Watts 50 Watts      
CW 5 Watts (25   C) 10 Watts (25   C)     20 Watts (25 °C) 25 Watts (25  C) 50 Watts (25  C)
Peak 250 Watts, 5   Sec. Pulse 500 Watts, 5  Sec. Pulse     1 kW, 5  Sec. Pulse 500 Watts, 5  Sec. Pulse 500 Watts, 5  Sec. pulse
Operating Temperature -65 ° to 125°C -65° to 125°C     -65 ° to 125 °C -65 ° to 125 °C -65 ° to 125 °C
Connector Types N, SMA, and TNC (M/F) N, SMA (M/F) N M/F N N (M/F) SMA and N (M/F) SMA and N (M/F)

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Low Power Fixed Pad Attenuators

Features:

  • DC - 18 GHz
  • 2 Watts
  • High Accuracy
  • Excellent VSWR
  • Various Connector Types
  • Very Economical

The XFP-18 SMA is a miniature DC-18 GHz attenuator meeting the requirements of Mil-A-3933. The XFP-18 N also operates to 18 GHz. Both units are available in a wide range of attenuation values, and are suitably priced for large volume OEM applications.

Specifications

XFP-18 series
Frequency Range DC to 18 GHz
Impedance 50 Ohms
Attenuation 3, 6 ,10. 20 & 30 dB consult factory for other values
Average Power 2 Watts CW (25 Degrees C)
Temperature -65 to 125  C
Accuracy 0-6 dB /- 0.3 dB
7-20 dB /- 0.5 dB
30 dB /- 0.75 dB
VSWR DC - 4.0 GHz 1.15:1
4 - 12.4 GHz 1.20:1
DC - 12.4 GHz 1.35:1
Connector N male/female, SMA male/female

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Rotary Step Attenuators

attenuators RS.gifTrilithic's RSA series rotary attenuators are recognized worldwide as the standard for durable, precise signal level control. The series is divided into both 50 and 75 ohm units with attenuation as high as 110 dB dynamic range (in 10 dB steps), or as low as 1 dB range ( in 0.1 dB steps). A firm, snap action detent locks in the desired attenuation as indicated on the supplied control knob. Low VSWR and insertion loss is assured throughout the range of each unit with tightly controlled pad values and machining tolerances.

Rotary Step Attenuator Features:

  • Wide Frequency Range
  • High Accuracy Rate
  • Low VSWR
  • Price Competitive
  • Flexible Design Configurations

Trilithic's new state-of-the-art rotary step attenuators are designed for precision control of signal levels in the DC to 3.0 GHz range and are offered in a wide choice of values and increments. This new design allows for greater automation of assembly and unprecedented low cost. Please contact the factory for your custom attenuator needs.

Specifications - Rotary Step Attenuators
  RSA-3501 RSA-3510 RSA-35100
Frequency Range DC to 1GHz DC to 3 GHz DC to 3 GHz
Impedance 50 Ohms 50 Ohms 50 Ohms
Attenuation 0 - 1 by .1 db 0 - 10 by 1 dB 0 - 100 by 10 dB
Average Power 2 Watts (25 Degrees C) 2 Watts (25 Degrees C) 2 Watts (25 Degrees C)
Switching Life 200,000 Steps Minimum 200,000 Steps Minimum 200,000 Steps Minimum
Rotation Clockwise for increasing Clockwise for increasing Clockwise for increasing
attenuation in 30 degree indexing attenuation in 30 degree indexing attenuation in 30 degree indexing
Connectors Female: SMA, BNC, TNC, N Female: SMA, BNC, TNC, N Female: SMA, BNC, TNC, N
(BNC not recommended above 1 GHz) (BNC not recommended above 1 GHz)
Housing Aluminum and Zinc Aluminum and Zinc Aluminum and Zinc
Knobs Knobs are included with every attenuator Knobs are included with every attenuator Knobs are included with every attenuator
Insertion Loss 0.0-1.0 GHz 0.9 dB max 0 - 1.0 GHz 0.3 dB max 0.0 - 1.0 GHz 0.25 dB max
1.0 - 2.0 GHz 0.5 db max 1.0 - 2.0 GHz 0.50 dB max
2.0 - 3.0 GHz 0.7 db max 2.0 - 3.0 GHz 0.75 dB max
  3.0 - 4.0 GHz 1.10 dB max
Accuracy DC - 1.0 GHz /- 0.05 dB 0 - 1.0 GHz /- 0.25 dB 0.0-1.0 GHz /- 0.25 dB or 1.5%* 
1.0 - 2.0 GHz /- 0.35 dB 1.0-2.0 GHz /- 0.35 dB or 2%* 
2.0 - 3.0 GHz /- 0.50 dB 2.0-2.5 GHz /- 0.50 dB or 2%* 3%
  2.5-3.0 GHz 0.50 dB or 3%* 6%
    *Whichever is greater  
VSWR/ Return Loss FREQUENCY RANGE VSWR FREQUENCY RANGE VSWR FREQUENCY RANGE VSWR
DC - 1.0 GHz 1.25:1 max 19.1 dB max DC - 1.0 GHz 1.25:1 max 19.1 dB max 0.0-1.0 GHz 1.25:1 max 19.1 dB max
  1.0 - 2.0 GHz 1.35:1 max 16.5 dB max 1.0-2.0 GHz 1.35:1 max 16.5 dB max
2.0 - 3.0 GHz 1.50:1 max 14.0 dB max 2.0-3.0 GHz 1.50:1 max 14.0 dB max

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