---
title: "Millimeter Wave Filter Manufacturing: Tolerance and Size"
description: Learn About Tolerance impacts on mmWave Filter performance
image: https://blog.knowlescapacitors.com/hubfs/fig5.png
---

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## Knowles Precision Devices Blog

# Millimeter Wave Filter Manufacturing: Tolerance and Size

Posted by [Peter Matthews](https://blog.knowlescapacitors.com/blog/author/peter-matthews) on Jul 24, 2019 1:58:00 PM

![Peter Matthews](https://blog.knowlescapacitors.com/hubfs/Peter.png)

- [Tweet](https://twitter.com/share)

One of the questions we get asked regularly is:

*‘why not just integrate a filter in the board stack?’*

Our answer to this comes in two parts: First there are manufacturing tolerances to consider, and second there is size.

Manufacturing tolerance for any filter will contribute to a filters performance and can make for some interesting discussions about what was planned for vs the realized filter performance. At mmWave tolerance impacts can become significant and can potentially impact the total cost of an implementation.

Tolerance is a cost to implement driver if one considers the cost of rejection no-conforming boards, and the physical size of the filter implementation is another potential cost consideration

*An example of a Stripline, 7th order hairpin filter design, at 26GHz*

![stripline 26GHz filter](https://blog.knowlescapacitors.com/hs-fs/hubfs/fig5.png?width=500&name=fig5.png)

To look at these factors we examined different 26GHz filter manufacturing approaches in our whitepaper [Tolerance and Size Analysis for mmWave Filter Manufacturing](https://info.knowlescapacitors.com/millimeter-wave-filter-tolerance)

 Topics: [RF and Microwave](https://blog.knowlescapacitors.com/blog/tag/rf-and-microwave)

## Insights Into Precision Passive Devices

Knowles Precision Devices is a premier global source for Capacitors, RF Filters, EMI Filters, Resonators, non-magnetic components and advanced dielectric materials. An umbrella for the brands of **Compex**, **DLI**, **Johanson MFG**, **Novacap**, **Syfer** and **Voltronics**, Knowles Precision Devices serves a variety of markets including military, aerospace/avionics, medical equipment, implantable devices, EMI and connector filtering, oil exploration, instrumentation, industrial electronics, automotive, telecoms and data networks.

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