Preliminary Product Listing

Model: 4SFB-6G18G-BR-SFF

PMI Model No. 4SFB-6G18G-BR-SFF is a four independent channel switched notch filter bank with each channel containing a band stop filter and switched RF bypass.  Overall passband is 6.0 to 18.0GHz.  The four filters are identical and are gang switched by a single control line, maximum input power is +24dBm and the input P1dB point is +18dBm.

Quick Links: (click the links below for additional information)

Product Feature


Frequency Range 6.0 to 18.0GHz
Insertion Loss (Bypass)

1.0dB min, 3.0dB max, 1.5dB PK-PK, 6.0-7.3GHz

1.5dB min, 4.0dB max, 2.0dB PK-PK, 9.0-18.0GHz

Channel-Channel Isolation


Switching Transients

<-60dBm above 2.0GHz into broadband detector

with 20MHz video bandwidth


2.0:1 max (Bypassed); 6.0 to 7.3GHz

9.0 to 18.0GHz, 2:1 max 7.3 to 9.0GHz N/A

(Filter Enabled)



Switching Speed From 50% CTRL

100 nsec max to within 0.5dB of final

amplitude value

100 nsec max to within 5° final phase value

Input IP3 +28dBm min
Inout P1dB +18dBm min
Max Input Power +24dBm No Damage
Spurious Outputs

-80dBm max not including swtiching



LSTTL, 1 Line (See Table for AO Pin Outs)

Logic 0: 0.8 V max, -0.4mA max

Logic 1: 2.0 V min, 20 uA max

Open Circuit:  Guaranteed Logic 1

Power Supply

+12VDC (+11.4 to +14.0V); 400mA max

-12VDC (-11.4 to -14.0V); 200mA max


RF - SMA (F) (Removable)

Control - M83513/02-BN (15 Socket Micro-D

with 2-56 Jack Posts)

Size 4.5" x 3.6" x 1.0"

Blue Epoxy Polimide Coating IAW

MIL-C-22750 Type 1 Over Epoxy Polimide

Primer IAW MIL-P-23377 Type 1, Class 1 or 3


16oz max

Sealing Hermetic

>150,000 hours calculated IAW MIL-HDBK-271

for naval sheltered at 50°C


Filter Loss Characteristics
6.0 to 7.3GHz
7.8 to 8.4GHz
9.0 to 18.0GHz
Insertion Loss
1dB min, 3dB max
60dB min
1.5dB min, 4.0dB max
1.5dB PK-PK
2.0dB PK-PK
Phase Difference (Filter Bypassed/Filter Enabled) 
6.0 to 7.3GHz
7.3 to 9.0GHz
9.0 to 18.0GHz
Phase Difference
5° max
10° max


Filter Path
Filters Enabled
Filters Bypassed


Environmental Ratings:

Temperature:  -30C to +75ºC ( Operating) Per MIL-STD-810, Method 502.4, Procedure II For Low Temperature, 501.4 Procedure II For High Temperature
 545 ºC to +85 ºC (Storage) Per MIL-STD-810, Method 502.4, Procedure I For Low Temperature and 501.4, Procedure I For High Temperature
 Humidity: MIL-STD-810, Method 507.4 to 100% R.H., +30 to +60°C with condensation per method 507.4, 5 cycles
 Shock: The unit shall provide specified operational performance after being subjected to shock level of 80G, 10ms in operating or non-operating condition when tested in accordance with MIL-S-901D, Grade A
 Vibration: Random - 0.30G2/HZ from 15Hz to 2000Hz, decreasing at 6dB per octave starting at 66Hz per MIL-STD-81, Method 514.5, Table II and Figure 9 and 516.5, Table 1
 Altitude: MIL-STD-810, Method 500.4 Procedure 1, Sea Level to 11,000 Feet (Operating) and sea level to 36,000 feet (Non-Operating)
 Explosive Atmosphere: MIL-STD-810, Method 511.4 Proc. 1 operated without Igniting the explosive environment
 Fungus: No fungus nutrient materials to be used in the design
 Salt Fog MIL-STD-810, Method 509.4, 96 hour exposure

RFI/EMI Specifications:

 Leakage: With +10dBm RF input and outputs terminated into 50 OHMS RF leakage shall not exceed -60dBm
Detection: Leakage shall be tested per excelis procedure 126012