Why is There a 6 dB Correction on Measured Waveguide to Coax Adapter Return Loss Using a Back to Back Connection?

Many customers will question SAGE Millimeter’s waveguide to coax adapter return loss performance. They will mention that their measured return loss is lower than what is on the provided datasheets or in the specifications provided in their quotes. SAGE Millimeter has noticed that these same customers often test return loss by using the “back to … Continue reading Why is There a 6 dB Correction on Measured Waveguide to Coax Adapter Return Loss Using a Back to Back Connection?

How to Use the Spectrum Analyzer and a Noise Source to Measure Noise Figure

Noise figure is an important parameter in many RF applications. Per its definition, Noise Figure (NF) is a measurement of the degradation of the signal-to-noise ratio (SNR) which is caused by components in a signal path. It is a number by which the performance of an amplifier or a radio receiver can be specified. The lower the values, the … Continue reading How to Use the Spectrum Analyzer and a Noise Source to Measure Noise Figure

Noise Source Basics and SAGE Millimeter’s Full Band Noise Source Calibration Uncertainty

STZ series full waveguide band noise sources are silicon IMPATT diode based solid state noise sources. These noise sources implement high performance diode and propriety circuit design to offer high ENR with extreme flatness in entire waveguide bandwidth in the frequency range of 26.5 to 170 GHz in eight waveguide bands. The standard noise sources … Continue reading Noise Source Basics and SAGE Millimeter’s Full Band Noise Source Calibration Uncertainty

Doppler Radar Target Simulators

SAGE Millimeter offers Doppler Radar Target Simulators for Radar manufacturers and developers to test and evaluate their Radar systems’ performance in an economic way by replacing expensive and time-consuming field tests. The standard models are offered to cover common radar frequency bands of 24.125 GHz, 35 GHz, 77 GHz, 79 GHz and 94 GHz with … Continue reading Doppler Radar Target Simulators

SAGE Millimeter’s Compact Faraday Isolators

The Faraday isolator is constructed with a longitudinal, magnetized ferrite rod that causes a Faraday rotation of the incoming RF signal. By properly biasing the ferrite, the isolator will cause low loss signal in one direction and high loss in the reverse direction. Faraday isolators have found wide applications in microwave systems due to its … Continue reading SAGE Millimeter’s Compact Faraday Isolators

SAGE Millimeter’s Detectors are Square Root Small Signal Detectors

The SFD series and STD series waveguide detectors offered by SAGE Millimeter, Inc. are square root small signal detectors. What this means is, for RF power in the range of -45 dBm to approximately 0 dBm, the detector output voltage is proportional to its incident power measure in dBm. Because of the behavior exhibited, these … Continue reading SAGE Millimeter’s Detectors are Square Root Small Signal Detectors

Extend the Keysight N8975A Noise Figure Meter to Millimeterwave

The industry widely used Keysight Noise Figure Analyzer (NFA) N8975A can provide accurate measurement of both gain and noise figure up to 26.5 GHz. SAGE Millimeter’s STG series Noise Figure and Gain Analyzer Extenders can extend the measurement up to 170 GHz while preserving the functionality and features that Keysight standard models offer. The model … Continue reading Extend the Keysight N8975A Noise Figure Meter to Millimeterwave

SAGE Millimeter Doppler Radar Target Simulator

SAGE Millimeter offers Radar Target Simulator for Doppler Radar System Calibrations and Testing in the frequency range of 24 to 94 GHz. The simulator is based on Single Side Band (SSB) Modulation techniques. The simplified block diagram of the simulator is shown in the figure shown below. It is well known that the relationship between … Continue reading SAGE Millimeter Doppler Radar Target Simulator