Browse Prior Art Database

WAVEGUIDE FLANGE TEXT FIXTURE

IP.com Disclosure Number: IPCOM000009056D
Original Publication Date: 1999-Jan-01
Included in the Prior Art Database: 2002-Aug-05
Document File: 2 page(s) / 197K

Publishing Venue

Motorola

Related People

Kenneth V. Buer: AUTHOR [+3]

Abstract

This invention saves labor and material cost in prototyping, testing, and fixtureing millimeter-wave hardware. The invention reduces the machining complexity of fixture hardware by modifying readi- ly available waveguide components.

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MO7VROl.A Technical Developments

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WAVEGUIDE FLANGE TEXT FIXTURE

by Kenneth V. Buer, John E. Holmes and Ed Stanfield

THE PROBLEMS SOLVED BY THIS INVENTION

  This invention saves labor and material cost in prototyping, testing, and fixtureing millimeter-wave hardware. The invention reduces the machining complexity of fixture hardware by modifying readi- ly available waveguide components.

  What is needed is a millimeter-wave fixture that is cheap, easy to fabricate, and can be quickly assembled using off the shelf microwave compo- nents. What is also needed is a millimeter-wave fix- ture that has high performance, low loss interface, and allows for easy modification in rapid prototyp- ing. Thus, we have invented the waveguide flange test fixture method and apparatus.

DESCRIPTION OF THE INVENTION

  The waveguide flange test fixture uses standard waveguide bends brazed together to form a surface for mounting prototype MMICs or substrates. Once brazed together, the flange can be machined, and simple cover blocks can be added to achieve a suit- able package for test or prototype of microstrip, stripline, or waveguide structures. Since the tight tolerance and hard to machine portion of the fixture is already preassembled as a commercially available waveguide, and the cover block machining is fast and easy, the fixture can be easily modified, or reused for other applications. A drawing of the fix- ture is attached (Figure 1) along with a photo of the fixture. Figure 2 shows an example of data taken on a through line with e-plane waveguide launch. The data shows that the fixture is wide band and low loss, so it is suitable for a wide variety of high per- formance prototyping applications. The example shown in Figure 1 and in the photo is a WR-15 waveguide example suitable for 60 GHz applica- tions in accordance with the preferred embodiment of the invention, but this invention can easily be

built from any size standard waveguide and is thus suitable f...