waveguide and antennas

Waveguides are basically a form of microwave plumbing. They have a wide range of sizes depending on the system frequency used. They function as a conduit to allow the microwave energy to flow from one component to another and remain within set parameters.

Some configurations can become very complex and require great skill in pre-braze assembly, brazing, heat treating, and straightening to achieve acceptable end results.

Electrical testing is typically required in the form of VSWR (voltage standing wave ratio) tests and others may be required such as insertion loss or phase. Salt bath brazing is the typical process used. The best VSWR results are achieved by ensuring minimum internal braze fillets and maintaining the original internal cross section throughout the assembly without any deformation. Dents, dings, crushing even slightly will change the electrical performance. Many components have a VSWR requirement of 1:1.1 or better. This is generally met with standard good braze practice. When requirements approach 1:1.05 or less great care needs to be used and attention to internal residual braze taken. Specialized tooling configurations can be used to improve and speed the assembly process and post braze straightening task.

To tack, or not to tack; to stake or not; to wire, or paste; we can help you with the tooling and processes to speed your manufacturing and yield better testing results.

Slot array antennas are without exception very complex assemblies to process. They typically are made of very thin material thickness. They most often have feedguide channels overlapping and stacked in multiple levels, and require very close finished dimensional requirements. Here the tooling, assembly, braze, and heat treat methods are critical. If you are new to slot arrays, or just having a yield problem with your current process contact us and we can provide our experience to help solve your problems.