White Papers

Broadband Chokes for Bias Tee Applications

In broadband bias applications, most inductors do not cover enough impedance bandwidth. Bandwidth can be increased by putting three or four inductors in series, but DC losses and filter complexity increase. Instead, a broadband bias choke provides wide bandwidth in a single inductor package.

Additive Phase Noise in Amplifiers

Phase noise has been a growing concern for high-performance transceiver designs. This white paper will discuss and analyze the various sources of additive phase noise in RF amplifiers as well as typical application requirements and measurement challenges. Phase noise specifications for a series of MMIC amplifiers are presented.

Automatic Fixture Removal from VNA Measurements

Automatic Fixture Removal is a simple, accurate way to de-embed measurement fixtures. These are typically used when measuring SMD type components to provide an interface from the VNA test port cables to the DUT. The main challenge when characterizing such components is to completely isolate DUT characteristics from the fixture.

Improving R&S®FSWP Measurement Speed

The Rohde & Schwarz®FSWP (FSWP) is a modern, digital signal processing based, phase-noise test set that performs many tasks in parallel in an effort to improve measurements speed. However, several measurement settings drastically affect measurement speed. This paper will discuss these settings and provide suggestions on improving overall measurement speed.

Field-Test Your 5G Network Deployment

Get a head start on field tests for new 5G deployments. Download our 5G field test eBook. Discover which RF field tests ensure a smooth 5G network deployment and learn how Keysight’s FieldFox handheld analyzer equipped with 5G NR software can help you.

Wireless Communications for Automotive Applications

This white paper examines everything from lab-based testing and in-field performance testing to over-the-air (OTA) testing needs for vehicles. In the end, a clear overview of supplementary, non-communication related testing aspects in the automotive world is offered.

Faster Testing of Phased Array Antennas Improves LEO HTS Launch Rates

Understand the benefits of multi-probe technology for the faster testing and calibration of phased array antennas in LEO HTS, improving time-to-market and speed of production in the race to deliver viable connectivity on a global scale.

Generation of Radar Signals in a Hardware in the Loop (HIL) Environment

This application note belongs to a series of application notes which explain how to test EW receivers at RF in the lab with commercial, off-the-shelf signal generators and software. The series will cover all relevant use cases. This application note will discuss the generation of radar signals in a hardware in the loop (HIL) environment with PDW streaming.

Designing BUC/SSPAs for Airborne Applications

As we witness the evolution of integrated communication, we also observe the increased number of requirements for airborne microwave transmission, ranging from satellite to air-to-ground CDL band communications. Airborne applications introduce many challenging design constraints including increased temperature ranges, thermal management, vibration and shock, EMC/EMI, power requirements, and safety, all while maintaining portability as a key factor.

Reliable and Flexible Simulation of Angle of Arrival (AoA)

Engineers often need to test the direction finding capabilities of radar warning receivers in the lab. A perfect solution is to use multiple coupled R&S®SMW200A vector signal generators that are phase-coherent and time-synchronized. This setup enables simulation of the angle of arrival (AoA) of radar signals in the lab.