PLANAR FILTER COMPANY
Take a look at our QUICK TURN FILTERS. We guarantee 30 -60 day delivery.

 

 

 

   

On this page you will find a break down on how to select the proper filter for your project. We will show the benefits of each filter and draw backs along with some cost analysis. There will be many trade offs you can make when selecting the proper filter. Remember that the final dimensions and type of filter for your project you must consult Planar Filter Company.

Remember at Planar Filter Company we can make filters in any size or shape you can dream up. But there will be trade off’s from size, shape and insertion loss. A good rule of thumb, the smaller the filter the higher loss it will have.

Lumped element Lowpass filter:

 
bullet This filter is a good general filter with broad band performance and wide stop bands.
bullet Insertion loss moderate
bullet Power 1 to 5 watts
bullet Size is moderate to very small
bullet Price inexpensive
bullet Delivery 30 to 60 days in standard packing
bullet Operating frequency range from Dc to 8Ghz
Printed Lowpass filter:
 
bullet This type of filter is best suited for high frequency but can be used at lower frequency at the cost of size
bullet Media would include microstrip, Stripline and suspended substrate
bullet Insertion loss very low
bullet Power 10 watts
bullet Size is very compact with a low profile but it does take a larger surface area at lower frequency
bullet Price ranges from moderate to high possible NRE for non-standard designs
bullet Delivery 60 to 90 days
bullet Operating frequency range from 2000 to 18Ghz
 Lumped element Highpass filter: 
 
bullet This filter is a good general filter with moderate broadband performance and moderate stop bands
bullet Insertion loss moderate
bullet Power 1 to 5 watts
bullet Size is moderate to small
bullet Price inexpensive
bullet Delivery 30 to 60 days in standard packing
bullet Operating frequency range from Dc to 10Ghz
Printed Highpass filter: 
bullet This type of filter is best suited for high frequency but can be used at lower frequency
bullet Media would include microstrip, Stripline and suspended substrate
bullet Insertion loss very low
bullet Power 10 watts
bullet Size is very compact with a low profile but it does take a larger surface area at lower frequency
bullet Price ranges from moderate to high possible NRE for non-standard designs
bullet Delivery 60 to 90 days
bullet Operating frequency range from 2000 to 26.5Ghz
Lumped element Bandpass filter:
bullet This filter is a good general filter with narrowband (3%) to wideband (500%) performance with wide stop bands
bullet Insertion loss moderate to low
bullet Power 1 to 5 watts
bullet Size is moderate to small
bullet Price inexpensive
bullet Delivery 30 to 60 days in standard packing
bullet Operating frequency range from Dc to 4Ghz
Crystal Bandpass filter:
bullet This filter is best suited for very narrowband filters usually less than 10% or less stop bands are poor with a lot of spurs
bullet Insertion loss very low
bullet Power very low power consult factory
bullet Size is large to moderate depending on frequency
bullet Price High possible NRE for non-standard designs
bullet Delivery 60 to 90 days in standard packing
bullet Operating frequency range from Dc to 1Ghz
Helical Bandpass filter: 
bullet This filter is best suited for very narrowband filters from 1% to 5% stop bands fair with a few spurs
bullet Insertion loss very low
bullet Power 20 watts
bullet Size is large to moderate depending on frequency
bullet Price average
bullet Delivery 60 to 90 days
bullet Operating frequency range is from 20Mhz to 2Ghz
Cavity Bandpass filter: 
bullet This filter is best suited for very narrowband filters from .5% to 5% stop bands fair with a few spurs
bullet Insertion loss very low
bullet Power very high power consult factory
bullet Size is large to moderate depending on frequency
bullet Price high
bullet Delivery 30 to 60 days
bullet Operating frequency range is from 30Mhz to 18Ghz
Combline Bandpass filter: 
bullet This filter is a good general purpose filter for narrow band (1%) to moderate band (40%) filters stop bands broadband with a few spurs
bullet Insertion loss moderate to low
bullet Power 10 watts
bullet Size is moderate to very small depending on frequency
bullet Price moderate
bullet Delivery 30 to 60 days in standard packaging
bullet Operating frequency range is from 500Mhz to 26.5Ghz
Interdigital Bandpass filter: 
bullet This filter is best suited for moderate band (25%) to semi-broad band (70%) filters stop bands are narrow
bullet Insertion loss very low
bullet Power 10 watts
bullet Size is moderate to very small depending on frequency
bullet Price moderate
bullet Delivery 30 to 60 days in standard packaging
bullet Operating frequency range is from 500Mhz to 26.5Ghz
Suspended substrate Bandpass filter: 
 
bullet This filter is best suited for moderate band (25%) to broadband (500%) filters stop bands are broadband usually multioctive
bullet Insertion loss very low
bullet Power very high power consult factory
bullet Size is moderate to very small depending on frequency
bullet Price high possible NRE for non-standard designs
bullet Delivery 60 to 90 days
bullet Operating frequency range is from 500Mhz to 26.5Ghz