Ruby Maser

Ruby Maser: As was know ferrites of certain materials have atomic systems that can be made to resonate magnetically at frequencies dependent on the atomic structure of the material and…

Continue Reading Ruby Maser

Gunn Diode Working Principle

Gunn Diode Working Principle: A practical Gunn Diode Working Principle consists of a slice like the one shown in Figure 12-24, sometimes with a buffer layer between the active layer…

Continue Reading Gunn Diode Working Principle

Frequency Multiplier Circuit

Frequency Multiplier Circuit: A typical Frequency Multiplier Circuit chain is shown in Figure 12-11, The first stage is a transistor crystal oscillator, operating in the VHF region, and this is…

Continue Reading Frequency Multiplier Circuit

Varactor Diode Operation and Characteristics

Varactor Diode Operation and Characteristics: Varactor Diode Operation and Characteristics were first used in the early 1950s as simple voltage-variable capacitance and later for frequency modulation of oscillators. They thus…

Continue Reading Varactor Diode Operation and Characteristics

Microwave Transistors

Microwave Transistors: Silicon bipolar transistors were first on the microwave scene, followed by GaAs field-effect transistors. Indeed, FETs now have noticeably lower noise figures, and in the C band and…

Continue Reading Microwave Transistors

Trapatt Diode Construction and Working

Trapatt Diode Construction and Working: The Trapatt Diode Construction and Working is derived from and closely related to the IMPATT diode. Indeed, as pointed out near the beginning of this…

Continue Reading Trapatt Diode Construction and Working

Waveguide Mixers and Detectors

Waveguide Mixers and Detectors: As we know that ordinary transistor and tube RF amplifiers eventually fail at microwave frequencies, because of greatly increased noise, compared with their low-frequency performance. Unless…

Continue Reading Waveguide Mixers and Detectors

Ratio Detector Circuit

Ratio Detector Circuit: In the Foster-Seeley discriminator, changes in the magnitude of the input signal will give rise to amplitude changes in the resulting output voltage. This makes prior limiting…

Continue Reading Ratio Detector Circuit