Product/Service

Bandpass Filters

Source: ComNav Engineering, Inc.
Bandpass filters are used to reject frequencies outside of a desired range, while allowing designated frequencies to pass through. Any type of application that results in a particular frequency needing to be filtered against a large range of different signals would benefit from the integration of a Bandpass filter. There are two main types of Bandpass filters; active, and passive. Passive Bandpass filters use no external power source and use inductors and capacitors (passive components). Active Bandpass filters use transistors and integrated circuits (active components), and use an external source of power.

Bandpass filters are used to reject frequencies outside of a desired range, while allowing designated frequencies to pass through. Any type of application that results in a particular frequency needing to be filtered against a large range of different signals would benefit from the integration of a Bandpass filter. There are two main types of Bandpass filters; active, and passive. Passive Bandpass filters use no external power source and use inductors and capacitors (passive components). Active Bandpass filters use transistors and integrated circuits (active components), and use an external source of power.

ComNav Engineering designs and manufactures several different bandpass filters. A list of some of their offerings can be found below.

 

2 Pole High "Q" Air Cavity Folded Bandpass Filter

This bandpass filter exhibits low loss and high skirt selectivity. Center frequency range is from 850 MHz to 950 MHz with a rejection of 6 dBc min @ /- 2.5 MHz and 18 dBc min @ Fo /- 5.0 MHz. Insertion Loss @ Fo /- 0.5 MHz is 1.0 dB max over the operating temperature range of -10 to 50 degree C.

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Datasheet: 2 Pole High "Q" Air Cavity Folded Bandpass Filter

 

High Powered, Pole Placed Bandpass Filters

These pole placed 8 section surface mount high-powered bandpass filters are ideal for UHF Military Radio Applications. They can be supplied as RoHS compliant or with lead based solder. Availability for the Bandpass filters is immediate. They features small size, low loss, and high isolation.

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•Datasheet: High-Powered, Pole Placed UHF Bandpass Filter, SMT
•Datasheet: High-Powered, Pole Placed, Discrete Low Loss UHF Bandpass Filter, SMT
•Datasheet: High-Powered, Pole Placed VHF Bandpass Filter, SMT

 

6BCVPC-Fo/C16-O: Dielectrically Loaded Waveguide Bandpass Filter

The 6BCVPC-Fo/C16-O from ComNav Engineerng is a high "Q" cavity filter, which can be used in several applications where extremely high attenuation is required for co-channel isolation. This filter can be supplied from frequencies ranging from 2500 to 2700 MHz, with a nominal passband loss of 1.5 dB max @ Fo /- 15.3 MHz. Rejection of /- 70 dBc min at frequencies /- 25 MHz from Fo is exceeded.

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•Datasheet: 6BCVPC-Fo/C16-O: Dielectrically Loaded Waveguide Bandpass Filter

 

Wideband Ceramic Bandpass Filter

The 4BCR2E-1855/186-L is a high-performance wide-bandwidth ceramic filter in a miniature surface mount package. Measuring merely 0.375" long by 0.350" wide by 0.120" high, this filter achieves high-bandwidth and low insertion loss with consistent performance suitable for mass-production. This part achieves excellent wideband performance while requiring minimal space.

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•Datasheet: Wideband Ceramic Bandpass Filter

 

8 GHz Ceramic Bandpass Filter

The 5BCR2A-7970/550-L is a high-frequency high-performance ceramic filter in a compact surface mount package. Measuring merely 0.540" long by 0.325" wide by 0.120" high, this high-frequency filter achieves high-bandwidth and low insertion loss with consistent performance suitable for mass-production. This solution is highly cost-effective for the 7 GHz range, and benefits from the excellent temperature stability of ceramics. This product is available approximately 6 weeks after receipt of order.

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•Datasheet: 8 GHz Ceramic Bandpass Filter

 

6BCV4-2472/C26-N: 6-Pole, Cross-Coupled Cavity Bandpass Filter

This particular bandpass filter was designed specifically for low level, sharp skirts on the rejection. Cross coupling was used to achieve a tight shape factor of less than 1.5:1 at 20 dBc with only 6 resonant elements. This device was designed to be provided fix tuned across a relatively broad band, yet maintain the tight passband and rejection specs across the entire useful frequency range. In addition, depending on the specific application this device is supplied with either SMA or N connectors.

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•Datasheet: 6BCV4-2472/C26-N: 6-Pole, Cross-Coupled Cavity Bandpass Filter

 

Wideband LC Bandpass Filter

The 15HLLC1-1650/1540 is a wideband LC bandpass filter from ComNav Engineering. This pole-placed custom part features tight control of the passband rolloff, excellent phase linearity, and high-performance rejection. All this performance comes in a compact 1" long, by 0.470" wide, by 0.177" high surface mount package. This is another example of ComNav's commitment to excellence when creating innovative designs for your high-performance requirements in custom packages of all kinds