Bandpass, Low Pass, Harmonic Rejection Filters
Design
Using specialized bespoke modeling software and high speed computing power, customized product development timescales are remarkably fast. By entering specification parameters onto a computer the complete model can be produced ready for drawing within hours. The accuracy and repeatability of this process is most important and Andrew has developed and refined this over many years.
Manufacturing
Taking the computerized model, the final hardware is manufactured using high speed, high accuracy state of the art CNC machines. With extremely high tolerances Andrew are able to reproduce the design in many cases without the need for any post tuning. Eliminating tuning saves times and leads to a more reliable product in the field. Andrew is ideally suited to both low and high volume manufacture of filters with fast turnaround on customer specifications whilst producing high yield rates. Where most filters are specifically designed around customer specifications, Andrew has the capability to work with customers to offer a complete solution. New and innovative ideas are constantly being developed to increase efficiency of manufacture and to improve the lead time of design process.
Features
Particular features of the filters in Andrew's product range are the low insertion loss (typically less than 1.2dB), stability over a wide operating temperature range (130 deg) and the reliable long-term performance. Particularly stringent performance requirements can be accommodated, even at the highest operational frequencies.
Telelcommunications Filters
Andrew has been developing telecommunications filters for point to point and point to multipoint applications since 1998 and with over 50,000 in use around the world the company's expertise is renowned. Filters have been designed in many shapes and materials with a primary concern to efficiently produce and accurate and reliable filter. The filters are machined from copper or aluminum, then soldered or brazed together and finally plated or painted with a protective environmental seal. Each filter contains a series of irises and cavities in a precise configuration designed to meet the individual specifications.
Product Range
Typical frequency coverage is from 10 to 48GHz with particular emphasis on the microwave link bands centered around 13, 15, 18, 23, 26, 28, 31 and 38GHz. Development of filters outside these bands are possible and Andrew has the capability to design and test diplexers from 350MHz up to 75GHz.
Solutions
Andrew can also offer other communication components for radio links such as flexible waveguide to link the radio to the antenna and Hot stand by couplers to offer radio protection on key communication links. Also rigid waveguide assemblies, horn antennas, power splitters/combiners and diplexers. (Please refer to relevant data sheets for further information)
Frequency Bandwidth Insertion Loss Return Loss
-20 dB
Point
BW Working
BW Spec
Losses Working BW
Actual Loss@ Center Working BW
Actual Loss@ Edges Spec
Loss Actual
Loss
10 GHz (WG16)WR90 - - - - - - -
10620 MHz 200MHz 160MHz -1.5dB -0.60dB -0.75dB -20dB -21dB
11 GHz (WG17)WR75 - - - - - - -
11700 MHz 70 MHz 30MHz -5dB -1.9dB -2.1dB -20dB -23dB
11700 MHz 2000MHz 2000MHz -5dB -0.2dB -0.25dB -23dB -25dB
23 GHz (WG20)WR42 - - - - - - -
21500 MHz 760MHz 640MHz -1.2dB -0.65dB -0.9dB -20dB -23dB
22750 MHz 760MHz 640MHz -1.2dB -0.65dB -0.9dB -20dB -23dB
26 GHz (WG21)WR34 - - - - - - -
25220 MHz 660MHz 540MHz -1.2dB -0.7dB -0.95dB -20dB -23dB
26220 MHz 660MHz 540MHz -1.2dB -0.95dB -1.2dB -20dB -23dB
38 GHz (WG22)WR28 - - - - - - -
38500 MHz 600MHz 600MHz -1.2dB -1.16dB -1.19dB -16dB -18dB
39300 MHz 3000MHz 2000MHz -0.8dB -0.17dB -0.2dB -18dB -20dB
48 GHz (WG23)WR22 - - - - - - -
48050 MHz 360MHz 300MHz -2.5dB -2.1dB -2.5dB -17.7dB -19dB
Required Ordering Information
In order to design and manufacture customized filters we need to know several key parameters. Please take note of the following list so that we can produce a solution for you.
Full Electrical Specification including the following
Frequency of Operation
Bandwidth
Rejection
Harmonic Rejection (If any)
Insertion Loss
Return Loss
Group Delay Flatness
Ripple Over Passband
Operating Temperature Range
Mechanical Outline
Weight
Environmental Constraints
Quantities and Target Price
Using specialized bespoke modeling software and high speed computing power, customized product development timescales are remarkably fast. By entering specification parameters onto a computer the complete model can be produced ready for drawing within hours. The accuracy and repeatability of this process is most important and Andrew has developed and refined this over many years.
Manufacturing
Taking the computerized model, the final hardware is manufactured using high speed, high accuracy state of the art CNC machines. With extremely high tolerances Andrew are able to reproduce the design in many cases without the need for any post tuning. Eliminating tuning saves times and leads to a more reliable product in the field. Andrew is ideally suited to both low and high volume manufacture of filters with fast turnaround on customer specifications whilst producing high yield rates. Where most filters are specifically designed around customer specifications, Andrew has the capability to work with customers to offer a complete solution. New and innovative ideas are constantly being developed to increase efficiency of manufacture and to improve the lead time of design process.
Features
Particular features of the filters in Andrew's product range are the low insertion loss (typically less than 1.2dB), stability over a wide operating temperature range (130 deg) and the reliable long-term performance. Particularly stringent performance requirements can be accommodated, even at the highest operational frequencies.
Telelcommunications Filters
Andrew has been developing telecommunications filters for point to point and point to multipoint applications since 1998 and with over 50,000 in use around the world the company's expertise is renowned. Filters have been designed in many shapes and materials with a primary concern to efficiently produce and accurate and reliable filter. The filters are machined from copper or aluminum, then soldered or brazed together and finally plated or painted with a protective environmental seal. Each filter contains a series of irises and cavities in a precise configuration designed to meet the individual specifications.
Product Range
Typical frequency coverage is from 10 to 48GHz with particular emphasis on the microwave link bands centered around 13, 15, 18, 23, 26, 28, 31 and 38GHz. Development of filters outside these bands are possible and Andrew has the capability to design and test diplexers from 350MHz up to 75GHz.
Solutions
Andrew can also offer other communication components for radio links such as flexible waveguide to link the radio to the antenna and Hot stand by couplers to offer radio protection on key communication links. Also rigid waveguide assemblies, horn antennas, power splitters/combiners and diplexers. (Please refer to relevant data sheets for further information)
Frequency Bandwidth Insertion Loss Return Loss
-20 dB
Point
BW Working
BW Spec
Losses Working BW
Actual Loss@ Center Working BW
Actual Loss@ Edges Spec
Loss Actual
Loss
10 GHz (WG16)WR90 - - - - - - -
10620 MHz 200MHz 160MHz -1.5dB -0.60dB -0.75dB -20dB -21dB
11 GHz (WG17)WR75 - - - - - - -
11700 MHz 70 MHz 30MHz -5dB -1.9dB -2.1dB -20dB -23dB
11700 MHz 2000MHz 2000MHz -5dB -0.2dB -0.25dB -23dB -25dB
23 GHz (WG20)WR42 - - - - - - -
21500 MHz 760MHz 640MHz -1.2dB -0.65dB -0.9dB -20dB -23dB
22750 MHz 760MHz 640MHz -1.2dB -0.65dB -0.9dB -20dB -23dB
26 GHz (WG21)WR34 - - - - - - -
25220 MHz 660MHz 540MHz -1.2dB -0.7dB -0.95dB -20dB -23dB
26220 MHz 660MHz 540MHz -1.2dB -0.95dB -1.2dB -20dB -23dB
38 GHz (WG22)WR28 - - - - - - -
38500 MHz 600MHz 600MHz -1.2dB -1.16dB -1.19dB -16dB -18dB
39300 MHz 3000MHz 2000MHz -0.8dB -0.17dB -0.2dB -18dB -20dB
48 GHz (WG23)WR22 - - - - - - -
48050 MHz 360MHz 300MHz -2.5dB -2.1dB -2.5dB -17.7dB -19dB
Required Ordering Information
In order to design and manufacture customized filters we need to know several key parameters. Please take note of the following list so that we can produce a solution for you.
Full Electrical Specification including the following
Frequency of Operation
Bandwidth
Rejection
Harmonic Rejection (If any)
Insertion Loss
Return Loss
Group Delay Flatness
Ripple Over Passband
Operating Temperature Range
Mechanical Outline
Weight
Environmental Constraints
Quantities and Target Price
