RF/microwave attenuators reduce power in equipment. The two main types of RF/microwave attenuators are mixed or variable attenuators. The fixed attenuator reduces power signals by a fixed amount in a certain bandwidth, keeping input and output impedances close to a nominal level, generally 50 or 70 Watts. The variable attenuators change among several methods such as a continuous action or in certain amounts at a time.

When considering RF attenuators, take into account the types of device you need and consider how it mounts onto your equipment. There are several different styles including:

1. Surface mount technology, in which the RF attenuator components mount to a printed circuit board.

2. Though Hole Technology (THT), in which RF waveguide attenuators and other attenuators get mounted via component leads threaded through holes on the circuit board that become soldered in place on the other side of the board.

3. Flat pack mounting, in which the RF/microwave attenuators attach to the circuit board through flat leads and coaxial or another type of connector.

Action Steps
The best contacts and resources to help you get it done

Consider a distributor of microwave attenuators with a wide range of inventory

The more products a distributor has, the greater the odds that they have RF waveguide attenuators and other products that might be precisely what you need.

I recommend: Teledyne Technologies offers a selection of RF amplifier products, including attenuator packages. Hirose Electric, a worldwide supplier of RF/microwave attenuators and other electronic components, offers clients easy, online shopping and a large selection of product, including attenuator packages.

Purchase wholesale or used RF/Microwave attenuator Components

When you find RF/microwave attenuators for sale, you save money and often get a chance to exchange the equipment, if it's not completely satisfactory in performance.

I recommend: Test Equipment Connection offers refurbished electronic equipment including attenuators. This company supplies products for customers around the world, carries thousands of products and also gives you the option of trading in or selling your used equipment. TecNec Distributing offers attenuators and other components at wholesale prices. This wholesale electronics distributor sells to dealers and resellers.

Order custom RF attenuators to fulfill your product needs

While most manufacturers carry a product in stock that you can use, you may find that a custom RF attenuator fits your needs better. Manufacturers work with businesses that have unique radio frequency attenuator specifications, and many consult with customers to meet exact criteria.

I recommend: Eastern Wireless TeleComm (EWT) specializes in custom RF designs for military and civilian applications. Its goal is to work closely with clients from early development through finished product and beyond with customer support and service. Myers Engineering International (MEI) is a licensed, professional engineering firm that specializes in producing radio communication systems. It works with clients to develop custom designs then develops and manufactures the product.

Tips & Tactics

Helpful advice for making the most of this Guide

• •  Use a digital RF waveguide attenuator that you can program and set through external devices for ease of use.