Return Loss and SWR: Do They Represent the Same Thing?

Good impedance matching is required for the efficient transfer of signals between connected devices. Unfortunately a perfect match is rarely achieved. There are two common ways to express a device’s impedance mismatch:  Return Loss and Standing-Wave Ratio (SWR).  Both quantities describe the same phenomenon, but they have different interpretations. When a transmission line or waveguide … Continue reading Return Loss and SWR: Do They Represent the Same Thing?

Bias Voltage Clarifications of SAGE Millimeter’s Amplifiers and Multipliers

SAGE Millimeter offers microwave and millimeterwave amplifiers and active multipliers in the frequency range of 10 MHz to 170 GHz. SAGE Millimeter’s standard amplifiers and active multipliers all have built-in regulators to protect the delicate microwave semiconductor devices. In addition, all amplifier and active multipliers have a built-in “charge pump” to generate negative bias so … Continue reading Bias Voltage Clarifications of SAGE Millimeter’s Amplifiers and Multipliers

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 the 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, … Continue reading SAGE Millimeter’s Detectors are Square Root Small Signal Detectors

SAGE Millimeter’s Flexible and Twistable Waveguides

The flexible and twistable waveguides offered by SAGE Millimeter, Inc. cover the WR-42, WR-28 and WR-22 waveguide bands. While only exhibiting a fraction of performance degradation against their ridged waveguide counterparts, these flexible and twistable waveguides offer compelling flexibilities for system integrations at a comparable cost. For instance, the insertion loss of the WR-22 flexible … Continue reading SAGE Millimeter’s Flexible and Twistable Waveguides

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

SAGE Millimeter’s High Precision Programmable Attenuators

Programmable attenuators are widely used in automatic test setups to give an absolute attenuation setting for many components, sub-assemblies, and system characterizations. It is a very critical and important test equipment in the industry. The industry only has very limited offerings for waveguide programmable attenuators, especially in high millimeterwave frequency bands, such as V, E, … Continue reading SAGE Millimeter’s High Precision Programmable Attenuators

SAGE Millimeter’s High Precision Direct Reading Attenuators

Direct reading attenuators are widely used in test labs and production lines to give an absolute attenuation setting for many components, sub-assemblies, and system characterizations. It is a very critical and important test equipment in the industry. The industry only has very limited offerings for waveguide direct reading attenuators, especially in high millimeter wave frequency … Continue reading SAGE Millimeter’s High Precision Direct Reading Attenuators

Waveguide Quick and Tight Connect

Sometimes the most challenging part of working in a busy lab environment is having the right tools to do the job. Even the act of mating two flanges can be challenging due to tight space or missing waveguide screws, misplaced screwdrivers, and too many connections. SAGE offers the industry a simple, effective, and easy-to-use contraption … Continue reading Waveguide Quick and Tight Connect

How is the Axial Ratio of a Polarizer Measured?

SAGE Millimeter often receives questions on measuring the axial ratio for polarizers. In this blog post, SAGE Millimeter (SAGE MM) reveals the step-by-step process of axial ratio measurement for its SAS series polarizers. A Vector Network Analyzer (VNA), Orthomode Transducer (OMT), and Mode Transition will be used to test the axial ratio. Figure 1 shows … Continue reading How is the Axial Ratio of a Polarizer Measured?