Waveguides are some of the most important transmission lines used in microwave applications, especially in millimeter-wave systems, due to its low loss and high-power handling characteristics. However, the waveguide has a defined operating bandwidth due to its inherent structural limitations. For example, the standard operating frequency of a WR-10 rectangular waveguide is 75 to 110 … Continue reading Many SAGE Millimeter Products have Wider than Standard Waveguide Operating Frequency Range
A quadrature mixer consists of two balanced mixers where the RF (or LO) ports are connected along with an in-phase power divider; the LO (or RF) ports are connected with a quadrature hybrid. There are two IF ports, "I" for the in-phase component and "Q" for the 90° out-of-phase component. They are available to the … Continue reading How to Use the Quadrature Mixer as a Phase Detector and Single Sideband Modulator
It is industry practice to consider the Noise Figure (NF) of a Mixer equal to its conversion loss. This is a useful approximation, and it’s generally accurate within 0.5 dB, or, at any rate, within the uncertainty of a typical noise figure measurement. Rationale Behind this Industry Practice The reason behind this approximation is that … Continue reading Noise Figure of a Mixer
SAGE Millimeter offers harmonic mixers in two product families: SFH and STH. Their purpose is to extend the operation frequency of the spectrum analyzer and/or the frequency counter to millimeter-wave operations. These cover seven waveguide bands spanning across the frequency range of 26.5 to 170 GHz. The SFH series mixers are based on a balanced structure … Continue reading Which Harmonic Mixer Should I Use for My Spectrum Analyzer?