Technical Articles

Telewave Introduces New Digital Wattmeter

Telewave Introduces New Digital Wattmeter

San Jose, California (March, 2018) Telewave Inc., a leading provider of premium quality domestic and international radio and wireless systems equipment, announces a new, highly accurate, versatile digital wattmeter. Available now for pre-orders, the Telewave Model 44D digital wattmeter provides analog and digital modulated RF power measurement accuracy of 3% or better.

RF Digital Wattmeter Basics

RF Digital Wattmeter Basics

RF wattmeters are devices that measure power (watts) into a circuit or system such as a transmission tower. Bi-directional wattmeters allow the user to take data on a system while it is operating. In addition to delivered power, they also measure reflected power.

Understanding Antenna Gain

Understanding Antenna Gain

Antenna gain indicates how strong a signal an antenna can send or receive in a specified direction. Gain is calculated by comparing the measured power transmitted or received by the antenna in a specific direction to the power transmitted or received by a hypothetical ideal antenna in the same situation.

RF Analog Wattmeter Basics

RF Analog Wattmeter Basics

Wattmeters are used in a variety of electrical circuit measurement and debugging applications. For example, they can check the power consumption of electrical appliances. RF wattmeters are devices that measures power (watts) into a circuit or system such as a transmission tower.

RF Ferrite Isolator Basics

RF Ferrite Isolator Basics

An isolator is a type of non-reciprocal passive network that allows designers the freedom to construct networks where the transmission coefficient in one direction does not necessarily have the same loss as in the reverse direction. In an isolator, ideally, RF energy can be made to flow through it in only one direction.

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Choosing TX and RX Filters

Choosing TX and RX Filters

TX and RX filters select a specific portion of the RF or microwave signal based on the desired frequency, and reject the rest of the signal being transmitted or received. The range of frequencies that are passed by a filter are called the pass-band, the ranges of frequencies that need to be rejected are called stop-bands. Unless otherwise specified, filters reflect energy in the stopbands, rather than absorb it.

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Crossband Couplers

Crossband Couplers

A crossband coupler is a three-port network that allows transmitters and receivers of different frequency bands to share a single feedline to an antenna. It does this by using low-pass, high-pass, or band-pass filters to isolate the desired signals from each other, with very low loss in both paths to the antenna.

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Types of Antenna Coatings

Types of Antenna Coatings

Any time there are RF or any electrical equipment out in the field, it’s going to be subject to a wide range of environmental factors. Extremes of temperature, wind-blown debris, and moisture from rain or snow even dew can all interfere with signals you’re trying to transmit or receive.

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