Preliminary Product Listing

Model: 4SFB-2G6G-BR-SFF

PMI Model No. 4SFB-2G6G-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 2.0 to 6.0GHz.  The four filters are identical and are gang switched by a single control line.  The maximum input power is +24dBm and the input P1dB is +18dBm.

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

Product Feature


Frequency Range 2.0 to 6.0GHz
Insertion Loss (Bypass) 1.0dB min, 3.0dB max, 1.5dB PK-PK
Switching Transients

<-60dBm above 2.0GHz into broadband

detector with 20MHz video bandwidth


2.0:1 max (Bypass), 2.0-5.1GHz

2:1 max, 5.1-6.0GHz N/A (Filter Enabled)

Impedance 50 OHMS
Switching Speed From 50% CTRL

100nsec max to within 0.5dB of final amplitude value

100nsec max to within 5° final phase value

Input IP3 +28dBm min
Input P-1 +18dBm min
Max Input Power +24dBm No Damage
Channel - Channel Isolation 60dB min
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
2.0 to 4.9GHz
2.0 to 5.1GHz
5.3 to 6.0GHz
Insertion Loss
1dB min, 3dB max
4dB max
70dB min
Phase Difference (Filter Bypassed/Filter Enabled) 
2.0 to 4.6GHz
4.6 to 5.1GHz
5.1 to 6.0GHz
Phase Difference
5° max
8° 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
-54 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

Random - 0.30G2/HZ from 15Hz to 2000Hz, decreasing at 6dB per octave starting at 66Hz per MIL-STD-810, Method 514.5, Table II and Figure 9 and 516.5, Table 1

Sinusoidal - 0.2° double amplitude from 5-14Hz, 2G from 14 to 33Hz

 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