Erica Zhao - RF & Microwave Components-Safari MW Tech

Phased-Array Technology: Mastering Phase and Amplitude Balance up to 110 GHz

Are you an RF engineer looking at the booming satellite communications industry? Your current skills might not be enough. A simple module swap from a different field can lead to disaster. To succeed as a SATCOM RF engineer in 2026, you must master satellite-specific skills. These include calculating detailed link budgets1, understanding high-power and high-efficiency […]

Satellite SNR Optimization: Master Antenna Alignment and LNA Basics

Struggling with weak satellite signals and poor SNR1? This frustration leads to data loss and dropped connections, jeopardizing critical missions and wasting valuable time and resources. To improve satellite signal strength and SNR, focus on key areas. Ensure precise antenna alignment, use a high-gain antenna, and optimize the feedhorn2 position. Also, employ a high-quality Low-Noise […]

Satellite Frequency Range Exploped: Complete Engineering Guide from L-Band Satellite to Ka-Band Satellite

Choosing the wrong satellite frequency can skyrocket costs and cripple system performance. It’s a mistake that can jeopardize your entire project before it even gets off the ground. To select the right operating frequency, you must balance your application’s need for bandwidth against factors like atmospheric attenuation1, component cost, and required link reliability. Lower frequencies […]

Why Do RF Power Amplifiers Need Isolators? A Real Protection Case Against High VSWR

Ever watched a costly power amplifier fail due to unexpected reflections? This preventable setback can derail projects. A simple component, the isolator, is the key to protecting your investment. RF power amplifiers need isolators for protection against high VSWR. An isolator allows the signal to pass from the amplifier to the load but absorbs reflected […]

VNA S Parameters Demystified: Master RF Directional Coupler and SOLT Calibration

Finding the S-parameter formulas in textbooks too abstract? This lack of clarity can keep you from fully grasping RF measurements1. Everything clicks once you learn how a Vector Network Analyzer (VNA)2 operates. A Vector Network Analyzer (VNA) measures S-parameters3 by sending a known signal to a device’s port. It then measures the reflected signal from […]

RF PA Selection Guide: Balancing GaN/LDMOS Technologies and Doherty Technology

Starting your RF amplifier design directly in simulation software1? This common mistake leads to frustrating dead ends and wasted time when your topology fails under real-world conditions. The best process starts by defining detailed specifications based on the application. Then, you select the right transistor and topology. This is followed by simulation, layout, fabrication, and […]

RF Sensitivity Testing: Taming Signal Source Flatness and Power Droop

Your RF sensitivity test1s are failing, and you don’t know why. This hidden issue in your signal source2 might be the culprit, costing you valuable time and resources. A poor frequency response3 in a signal source causes its output power to vary across different frequencies. This inconsistency, known as poor flatness4, leads to inaccurate sensitivity […]

RF IMD Measurement Guide: How to Avoid Spectrum Analyzer Mixer Saturation

You see terrible intermodulation distortion1 (IMD) results on the screen, and they don’t match the datasheet. Is your expensive new amplifier a dud? It’s a frustrating and costly problem. To accurately measure IMD, you must use the spectrum analyzer’s internal attenuator. By increasing the input attenuation by 10 dB, check if the measured IMD products […]

Receiver Blocking Protection: Master Attenuator and LNA Trade-offs

You see a receiver design with an attenuator1 before the LNA2 and it feels wrong. Why reduce a weak signal? This post explains this smart trade-off. An attenuator is placed before an LNA to improve the receiver’s blocking performance3. It prevents strong, out-of-band signals from saturating the LNA. This preserves the amplifier’s linearity and ensures […]

Broadband RF Amplifier Design: Mastering Wideband Impedance Matching and Gain Flatness

Having trouble achieving wide frequency coverage with your RF amplifier1? The ongoing trade-offs among bandwidth, power, and efficiency can be frustrating. But with the right design strategies, this challenge can be solved. To achieve ultra-broadband performance, focus on advanced matching network design2 using techniques like distributed amplifiers or negative feedback. Also, carefully select transistors with […]

Author: Erica Zhao

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