Device Overview

General Description

The FB series bandpass filters are CAD-optimized microstrip filter designs built on a low-loss substrate. These filters feature low insertion loss, excellent return loss and are suitable for high rejection filtering.

Photo of FB-0850SM

Features

  • Chebyshev Response
  • Typical 3 dB Bandwidth, ± 7.5%
  • 50 dB Stop Band Suppression
  • 5 Section Filter
  • Reflow Solderable

Applications

  • Test and Measurement Equipment
  • SATCOM
  • Radar
  • RF Transceivers

Functional Block Diagram

Block Diagram

Part Ordering Options

Part NumberDescriptionPackageGreen StatusProduct LifecycleExport Classification
FB-0850SM8.5 GHz Surface Mount Bandpass FilterSM

Non-RoHS

ReleasedEAR99

Table Of Contents

Revision History

Revision CodeRevision DateComment
-2016-02-09Datasheet Initial Release

Rev: - | Copyright © 2016 Marki Microwave LLC.

2

Port Configuration and Functions

Port Diagram

Diagram of the port configuration for FB-0850SM

Port Functions

PortFunctionDescriptionDC Equivalent
Circuit
Port 1Input/Output Port 1 is DC open to Port 2 and GND. GND is provided through the case.Equivalent circuit for the Input/Output
Port 2Input/Output Port 2 is DC open to Port 1 and GND. GND is provided through the case.Equivalent circuit for the Input/Output

Rev: - | Copyright © 2016 Marki Microwave LLC.

3

Specifications

Package Information

ParameterDetailsRating
Dimensions-40.64 x 8.13 mm
Moisture Sensitivity Level-MSL 3

Rev: - | Copyright © 2016 Marki Microwave LLC.

4

Electrical Specifications

Specifications guaranteed from -55 to +100°C, measured in a 50Ω system.

ParameterTest ConditionsMinimum
Frequency
(GHz)
Maximum
Frequency
(GHz)
MinTypMaxUnit
1 dBc Passband Temp = 25°C
7.9 9.16---GHz
3 dBc Passband Temp = 25°C
7.66 9.37---GHz
30 dBc Rejection Point Temp = 25°C
6.37 10.51---GHz
Center Freq Temp = 25°C
- --8.50-GHz
Insertion Loss @ fc Temp = 25°C
- --1.93.0dB
Passband Return Loss Temp = 25°C
- --18-dB
Group Delay Temp = 25°C
- --714-ps
Impedance Temp = 25°C
- --50-Ω
RF Power -- ---1W
Stopband Suppression, High Band 11.0 GHz
11 11-35-dB
Stopband Suppression, High Band 11.85 GHz
11.85 11.85-50-dB
Stopband Suppression, Low Band 5.15 GHz
5.15 5.15-50-dB
Stopband Suppression, Low Band 6.0 GHz
6 6-35-dB

Rev: - | Copyright © 2016 Marki Microwave LLC.

5

Typical Performance Plots

Magnitude response for a typical FB-0850SM, measured in a connectorized fixture graph for FB-0850SM

Rev: - | Copyright © 2016 Marki Microwave LLC.

6

Typical Performance Plot

Insertion Loss (dB) graph for FB-0850SM
Insertion Loss (dB) graph for FB-0850SM
Return Loss (dB) graph for FB-0850SM
Return Loss (dB) graph for FB-0850SM
Group Delay (ps) graph for FB-0850SM

Rev: - | Copyright © 2016 Marki Microwave LLC.

7

Mechanical Data

Outline Drawing

Download : Outline 3D Drawing Outline 3D STP

Outline Drawing

Rev: - | Copyright © 2016 Marki Microwave LLC.

8

Rev: - | Copyright © 2016 Marki Microwave LLC.

9