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CERAMIC RESONATOR BANDPASS FILTERS

The QRB standard ceramic resonator (CR) filter product series offers a variety of Surface Mount Technology (SMT) fitler products. Selectable or customized features are indicated by Q Microwave´s part number convention and the definitions provided in the description table.

Q Microwave´s QRB-Series Description & Part Number Code

Description:  QRB(Field 1)M(Field 2)P(Field 3)S(Field 4)(Field 5)

PARAMETER

STANDARD FILTER SPECIFICATIONS

FIELD DESCRIPTION

CUSTOM PERFORMANCE

   

Center Frequency (Fc)

800 to 3500 MHz

Field 1 (In MHz)

3dB Bandwidth (BW3dB)

1% to 3% of Fc

Field 2 (In percent)

Rejection

Characterized by Chebychev transfer function with 2 to 6 sections. See plots.

Field 3 (In Number of Sections)

STANDARD PERFORMANCE

   

Insertion Loss (I/L)

Determined by Fc, BW3dB, and sections. See plots.

None

Return Loss

10 dB typical over 70% of BW3dB. See plots.

Standard

Characteristic Impedance

50 Ohms

Standard

Input Power

20 dBm maximum

Standard

ENVIRONMENTAL CAPABILITIES

   

Operating Temperature

0oC to +50oC

Standard

Storage Temperature

-65oC to +125oC

Standard

Thermal Cycles

25 cycles  -65oC / +125oC

Standard

Humidity

90%-95% relative humidity, non-condensing environment

Standard

MECHANICAL CONFIGURATION

   

Option 1

Connectorized

  • Finish - Silver or brass
  • I/O - SMA-Female connectors
  • Contact sales for outline drawings.

Field 4 (Select "CS")

Option 2

Pins - Formed  (Surface Mountable)

  • Finish - Silver or brass.
  • I/O - Formed Leads
  • Contact sales for outline drawings.

Field 4 (Select "FS")

Option 3

Pins - Straight

  • Finish - Silver or brass
  • I/O - Formed Leads
  • Contact sales for outline drawings.

Field 4 (Select "FA")

Option 4

Surface Mount Technology (SMT)

  • Finish - Polyamide substrate with tin or solder finish.
  • I/O - SMT
  • Contact sales for outline drawings.

Field 4 ("SM")

SPECIAL OPTIONS

A variety of special options are available.  Unlimited special options may be included in Field 5. Consult Q Microwave´s Sales Office for details.

Field 5

Select QRB-Series Filters

Part Number/ Description

Filter Type

Fc (MHz)

BW3dB (MHz)

Sect.

Rejection

I/L (dB) at Fc

I/O Style

QRB2524M4P4SSM

CR, BPF

2524

100

4

20 dBc @ 2596 MHZ, 40 dBc at 2895 MHz

2.8

SMT

QRB2640M4P5SSM

CR, BPF

2640

100

6

30 dBc @ 2500 MHz, 20 dBc @ 3200 MHz

2.5

SMT

QRB3515M4P3SSM

CR, BPF

3515

150

3

20 dBc @ 3000 MHz & 4115 MHz

2.0

SMT

QRB3550M3P7SSM

CR, BPF

3550

100

7

30 dBc @ 3475 MHz & 3625 MHz;50 dBc @ 3400 MHz & 3700 MHz

4.5

SMT

 

 

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481 Cypress Lane, El Cajon, California 92020-1605
Phone: 619-258-7322 • Fax: 619-444-7939 • Email:
Sales@QMicrowave.com