Doherty amplifier testing

Learn how to get the maximum performance from your design

Doherty power amplifier design

Whether it is for 5G, SatCom or any other application demanding high performance and reproducibility, the challenges remain the same: how can you be sure that you are getting the maximum possible performance from your design and how can you evaluate its sensitivities and variations for series production?

Running a test campaign while changing the drive signals in the two Doherty paths enables complete amplifier design characterization. The R&S®SMW200A vector signal generator outputs two signals whose relative linear (amplitude and phase) or nonlinear (e.g. shaped) characteristics are precisely varied.

The R&S®FSW signal and spectrum analyzer not only returns scalar quantities such as spectral regrowth and EVM, but also AM/AM and AM/PM, gain and peak envelope power (using the R&S®FSW-K18 option).

Read more on getting deep insights into your design.

Related applications

Optimize Doherty power amplifiers

Speed up development, verify best performance and start up series production with confidence. Doherty designs achieve high efficiency, greater linearity and increased output power. Gain deep insight into your design with a dual-path, precisely synchronized source driving the Doherty amplifier, and improve your yield.

More information

Making effective use of Doherty amplifier architecture

With the evolution of 5G technology, the need for antenna array systems is growing. This increases the demand for efficient power amplifier implementations to support high-density setups. Imagine what it would be like if you could get 60 % more output power, 50 % more bandwidth and up to 20 % efficiency gain per amplifier in a MIMO antenna array setup? Would you spend time on rethinking your implementation plans? Let's take a closer look at how this can be achieved.

Download flyer

Measurement-aided Doherty amplifier design

Targeting Doherty amplifier developers, this document summarizes some of the technical challenges, limitations and implementations, and introduces a design methodology that allows maximized cost-performance to be achieved. The following sections (overview and links provided below) describe significant improvements in Doherty performance by addressing the input side. A measurement-aided methodology that allows you to extract and understand this performance provides more detailed, rigorous insight and enables shorter time-to-market and better cost-specification.

More information

Dual input Doherty amplifier

The dual input Doherty amplifier architecture enables RF PA designers to maximize efficiency, power, bandwidth and yield without compromising linearizability. Overcome design challenges such as optimum signal alignment and PA class by driving with linear and non-linear input signals. Measurements on a state-of-the-art GaN Doherty amplifier, enabled by unique signal generation and analysis solutions, illustrate the approach.

More information

Related products

R&S®SMW200A vector signal generator

The R&S®SMW200A is the perfect tool for generating high-quality, complex, digitally modulated signals. The R&S®SMW is one of a broad portfolio of signal generators offering wide frequency ranges.

Product information

R&S®FSW signal and spectrum analyzer

The high-performance R&S®FSW signal and spectrum analyzer meets demanding customer requirements. Offering low phase noise, wide analysis bandwidth and intuitive operation, the analyzer makes measurements fast and easy.

Product information

Related topics

RF power amplifier performance verification

RF power amplifiers are components used in RF systems such as 5G base stations. The device characterization is key to make sute the amplifier fits the system requirements.

More information

RF & microwave component testing

Components need to address the challenging requirements of mobility, connectivity, highest data rates, robustness and power efficiency.

More information

Request information

Do you have questions or need additional information? Simply fill out this form and we will get right back to you.

I want to receive information from Rohde & Schwarz via

Marketing permission

What does this mean in detail?

I agree that Rohde & Schwarz GmbH & Co. KG and the Rohde & Schwarz entity or subsidiary company mentioned in the imprint of this website, may contact me via the chosen channel (email or postal mail) for marketing and advertising purposes (e.g. information on special offers and discount promotions) related to, but not limited to, products and solutions in the fields of test and measurement, secure communications, monitoring and network testing, broadcast and media, and cybersecurity.

Your rights

This declaration of consent may be withdrawn at any time by sending an email with the subject "Unsubscribe" to news@rohde-schwarz.com. Additionally, a link to unsubscribe from future email advertisements is contained in each email sent. Further details on the use of personal data and the withdrawal procedure are set out in the Statement of Privacy.

Your request has been sent successfully. We will contact you shortly.
An error is occurred, please try it again later.