All posts by Sheetal Rajput

Everything You Need To Know About Block Up Converters

Block Up Converters, also known as BUCs, are a piece of crucial equipment in the telecom and satcom industries.

What is a Block Up Converter?

Block Up Converters are used to transmit signals to satellites. They convert lower L Band frequency IF signals into higher frequency signals. Moreover, block converters magnify these signals. Block Up Converters are popular because they serve two purposes, i.e., amplification and conversion in the form of a single device.

Where are Block Up Converters used?

The most common uses of Block up converters are found in telecom and satcom broadcasting systems and also for weather predictions. These converters are frequently used by government agencies.

How does one pick out a block up converter?

The following aspects need to be considered while picking up a Block Up Converter:

  1. – IF Frequency: This is the L Band frequency that is input in the Block Up Converter to be converted into a higher frequency.
  2. – RF Frequency: This is the output frequency of the converter. It is marked using the IEEE bands like c Band, Ku Band, ka Band, etc.
  3. – DC Voltage: Every Block Up Converter needs a certain amount of voltage to amplify the power.

You can check out our Block Up Converters at the Raditek website and get a quote by contacting sales@raditek.com.

Understanding the Difference between Dual LNB and Single LNB

LNB is the abbreviation for a Low Noise Block downconverter. It is a piece of small equipment installed at the front of the antenna to receive a signal from the satellite, amplify and then pass it down through the cable. If the picture or sound in your television is not clear, there might be a possibility that LNB needs to be changed. There are two types of LNB on the basis of your requirement and the difference between both of them is the number of output on it.

Single Line LNB

It serves only one receiver at a time. Which means that you can only view one channel at a time on one transponder which means using a multi-switch to split the signal is not possible with a single-line LNB.

Dual LNB

Here the dual connections operate independently of each other, enabling you to use two receivers. Hence, a dual LNB can access different channels on different transponders, but a condition applies here is that you need to install a multi-switch to split the signal.

You can enjoy flipping as many channels as you want. Don’t let any technological limitation to obstruct your entertainment.

You can place an order for any of the LNB online.

Understanding the Objectives of Band Pass Filter and Cavity Diplexer

Band Pass Filter (BPF) and Cavity Diplexer have one thing in common that they both have to deal with frequency filtering. BPF lets only the frequency of a particular range to pass while Cavity Diplexer keeps frequencies separated that are received and transmitted.

Band Pass Filter

Band Pass Filter is the combination of Low Pass Filter (LPF) and High Pass Filter (HPF) to let pass the frequencies of the desired range to eliminate the disturbance elements. It also optimizes the signal-to-noise ratio. These are used in all aspects of telecommunications, Sonar, Seismology and medical equipment such as EEGs and Electrocardiograms.

Cavity Diplexer

The Cavity Diplexer keeps the frequencies received and transmitted separated. It is a three-port device and covers all frequency bands ranging from higher to lower. The commercial diplexer is designed as cavity notch, hybrid ring, and band pass or band-reject. Every design has its own advantage and an objective. So, all of these solve your different problems. A commercially manufactured diplexer is more efficient and convenient to use.

Both of these solve different purposes but their collective efforts result in precise output or to have one made to your needs, ensuring high-quality data transfer be it video, sound or text. These have revolutionized the communication industry by facilitating interruption-free data transfer.

You can find a wide range of both Cavity Diplexer and Band Pass Filter online at the Raditek website.

Waveguide Rotary Joint Brings Flexibility in Electrical Connections

In everyday language waveguide rotary joint provides RF connections with the movable joint ensuring a consistent flow of signal with low insertion loss and good power-handling capabilities to exceed the maximum limits of the whole system.

Its primary characteristic is to allow at least one of the transmission line to rotate when it connects high-speed digital signals or high-frequency analog signals in the system. Waveguide rotary joint is used in almost all the high-frequency systems such as radars, air-traffic-control (ATC), surveillance systems, and satellite communications, etc.

Waveguide rotary joint is available in different styles on the basis of various mechanical configurations and can include digital signals, analog signals, and even fiber-optic signals. These Styles are –

1. I style rotary joint – The style is formed when both of the transmission lines are in a straight line

2. L style rotary joint – when one transmission arm forms ninety degrees angle with another arm.

3. U style rotary joint – when both the transmission lines form a right angle with the centre of rotation.

4. F style rotary joint – the transmission arm at ninety degrees angle rotates while an in-line transmission arm is fixed to the housing.

You can gauge the performance of Waveguide rotary joint in terms of insertion loss and VSWR (voltage standing wave ratio) with leak rate, frequency, and torque.

You can find a wide array of waveguide rotary joint to compare on the basis of style, type, features, performance on our website.

Uses of Waveguide Circulators and Isolators

Waveguide circulators are three or four port devices used to create isolation between transmitted and received signals. Commonly, the Waveguide Circulators are used for many tasks including electronically steered antenna (AESA) arrays, satellite communications, and telecommunications applications such as mobile phones, etc.

A waveguide isolator is defined as the modified circulator with one port terminated with a matched impedance. It isolates the signal on the input side, from any kind of effects of conditions on its output side. This way it prevents a microwave source from getting detuned by a mismatched load.

Both of these devices can be used for preventing high powered transmitter outputs from sensitive receiver circuitry. These are manufactured in many variants having multiple ports for different purposes. Some of the industries use Waveguide Isolators, and Waveguide Circulators are listed as commercial marine radar, air traffic control, airborne satellite communications, missile seekers and space-based telecommunications.

The performance of Waveguide Circulators and Waveguide Isolators is measured using the parameters such as isolation, bandwidth, and insertion loss, etc. Users also consider other factors such as power handling, size, temperature range, and interconnect technology, etc.

Both the devices are available with different designs and trade-offs. Both the devices are used in the electronic applications ranging from a multitude of megahertz to tens of gigahertz. You can find a wide range of Waveguide Circulators and Waveguide Isolators on the RADITEK website.

How to Pick the Right Microwave Amplifier

Microwave amplifiers are solid state amplifiers in the 1 to 100GHz Frequency Band. They are used in defense systems, electromagnetic compatibility (EMC) testing, EMI (electromagnetic interference), medical diagnostics, and communications testing, laboratory testing and field testing applications.

Raditek solid state amplifiers include either Gallium Arsenide (GaAs) or Gallium Nitrate (GaN) active devices: these are the devices that do the actual amplification. Simplistically GaAs has the best linearity and GaN the best efficiency.

Applications are numerous; our focus is typically RF high power generation for RF and Microwave applications such as radio transmitters. Interstage amplifiers, medical amplifiers for cancer treatment, Low Noise amplifiers for Receivers.

A power amplifier is designed to increase the power available to a load. Power amplifier circuits (output stages) are classified as A, B, AB and C for analog designs—and class D and E for switching designs. The power amplifier classes are based on the proportion of each input cycle (conduction angle) during which an amplifying device passes current. The angle of flow is closely related to the amplifier power efficiency.

They are typically conductively cooled by mounting to a rack or a heat sink, Alternately they can be convection cooled by fitting to a heat sink, the cooling on this heat sink can be enhanced by a fan blowing air through it (known as forced air cooling) Water cooling options are offered for higher power models.

For our Microwave amplifiers we focus on Solid-state devices such as GaAs FETs, IMPATT diodes, Gallium Nitrate GaN IMFETS and others.

Amplifiers are specified mainly by their frequency coverage, Output Power, whether CW or Peak. All amplifiers have gain, a multiplication factor that relates the magnitude of the output signal to the input signal. Typically expressed as output power to input power (power gain) is most often expressed in decibels (dB)The gain may also be specified as the ratio of output voltage to input voltage (voltage gain). Amplifier power gain depends on the source and load impedances.

When you buy a Microwave Amplifier, you must have a list of features and output you want from the product. Otherwise, you might get confused and end up buying a wrong product out of many types and multitude of variants of each type. You should understand the configuration and design of all the kinds of Microwave Amplifiers such as Broadband, Log, Low Noise Amplifier, Gain Block, Variable Gain, and Power Amplifiers.

The performance of an SSPA is measured in terms of the frequency band, gain, power output, noise figure, linearity along with input and output VSWR which depends on the factors like device size, circuit design topology, matching networks, design methodology, fabrication technology, the number of gain stages, the aspect ratio for the devices between stages, and the quality of packaging.

You should also consider the performance of the amplifier: factors like semiconductor technology, thermal management, design methodology, and circuit architecture, etc. Also, the design should meet your electrical, thermal, physical, and economic requirements for a particular application and frequency range.

You would also find the trade-offs among size, electrical performance, reliability, and cost to meet your requirements. You can find the desired Microwave Amplifiers you need by using the Raditek website. You can also contact the sales team in case of any confusion.

A Solid State Power Amplifier Buying Guide

SSPA (Solid State Power Amplifier) is an RF amplifier comprising a series of combined FET (field effect transmitter) that amplify the RF signals. These are made up of semiconductor devices such as Gallium Nitride (GaN) or Gallium Arsenide (GaAs) which provides higher performance because of their high band gaps and electron mobility at high frequencies. The Amplifiers RF are available in both indoor and outdoor enclosures for both military and commercial markets. Their uses include Satcom (satellite communications), Terrestrial including Broadcast and Point to Point communications EMC ((electromagnetic compliance), EMI (electromagnetic interference), laboratory testing, and field testing applications.

You can find a wide range of product line divided into a multitude of series on the basis of frequency and power on our website. Raditek offers amplifiers in bands from 100KHz to 96GHz and powers from a few watts to 15Kilo watts. These are strategically designed to minimize internally produced EMI signal leakage while enabling easy access for field services.

Raditek solid state amplifiers include either Gallium Arsenide (GaAs) or Gallium Nitrate (GaN) active devices: these are the devices that do the actual amplification. Simplistically GaAs has the best linearity and GaN the best efficiency.

Applications are numerous; our focus is typically RF high power generation for RF and Microwave applications such as radio transmitters. Interstage amplifiers, medical amplifiers for cancer treatment, Low Noise amplifiers for Receivers.

A power amplifier is designed to increase the power available to a load. Power amplifier circuits (output stages) are classified as A, B, AB and C for analog designs—and class D and E for switching designs. The power amplifier classes are based on the proportion of each input cycle (conduction angle) during which an amplifying device passes current. The angle of flow is closely related to the amplifier power efficiency.

For our Microwave amplifiers we focus on Solid-state devices such as GaAs FETs, IMPATT diodes, Gallium Nitrate GaN IMFETS and others.

Amplifiers are specified mainly by their frequency coverage, Output Power, whether CW or Peak. All amplifiers have gain, a multiplication factor that relates the magnitude of the output signal to the input signal. Typically expressed as output power to input power (power gain) is most often expressed in decibels (dB)The gain may also be specified as the ratio of output voltage to input voltage (voltage gain). Amplifier power gain depends on the source and load impedances.

You can pick them on the basis of their frequency range, rated output power, gain at rated power, impedance, input connectors (male or female), operating and non-operating temperature, Input & Output VSWR (Voltage Standing Wave Ratio), cooling system, Modulation (Am, FM, Pulse), and Configuration (such as Rack Mount), etc.

Always buy SSPA Amplifiers and check the detailed description of the product given in a data sheet PDF file. It helps you to ensure that you are placing an order for the right SSPA. In case of any confusion or if you don’t find the features you need, you should contact the sales team.

Block Upconverter and Its Types

Engineers strive hard to enhance the performance of any system. An ideal system according to users is something that requires less input and maintenance while delivering optimal performance. The performance of any system depends on many small elements and Block Up Converters are one of them.

Block Upconverter is abbreviated as ‘BUC.’ It is the combination of an Up Converter and Power Amplifier. It amplifies the frequency and power of a input L band signal. Commonly it is used for VSAT (Very Small Aperture Terminal) applications.

Four commercial Types of Block Upconverters are

• C-Band BUC

• Ku-Band BUC

• X-Band BUC

• Ka-Band BUC

Each type represents a collection of frequencies which distinguishes the set of data. It converts the low digital L Band frequencies that represent data into microwave frequencies to enable data to travel long distances to reach satellites in geostationary earth’s orbit without letting the quality of data loss.

One use of a BUC enables people to use the internet effectively and enjoy watching television without any deterioration in the quality of visuals and audios. You should choose a Block Up Converter that offers easy installation along with excellent control and monitoring options.

You should also check the capability of the device to withstand external environmental factors like atmospheric humidity and temperature. The equipment should also have easy integration options like with the satellite antenna for enhanced performance.

Based on types and many other variants you can find a wide range of Block Upconverters at the Raditek website.

Difference between Band Pass Filter and Cavity Diplexer

In the Telecommunications industry using radio frequencies to transfer data in the form of audio, videos, text and other forms, one of the most important tasks is to limit and separate the frequencies. Sometimes you have to amplify the frequencies or convert it in another form. A wide range of devices are used in this process, and Band Pass Filters and Cavity Diplexers are two devices that filter or separate the frequencies. Here is the difference between both of them –

Band Pass Filter

There are three types filters: one that let only lower frequencies pass, and it is called low pass filter, the second let only higher frequencies pass, and it is called high pass, and the band pass filter is one that allows only the frequencies of the selected band to pass. It keeps the unwanted ones away from the system.

Cavity Diplexer

Transceivers are a combination of a transmitter and a Receiver and you need to keep the frequencies that are received and transmitted separate. The Cavity Diplexer does the task well while sharing the common antenna for working. It is a three port device used on all duplex transmissions, and is offered for all bands ranging from HF to millewaves.

One common thing between them is that they both control the frequencies but solve different purposes. You can purchase both Band Pass Filters and Cavity Diplexers from Raditek Inc see www.raditek.com for a wide range of variants of both of them. Contact sales@raditek.com for full details.

Describing a Phase Lock Oscillator

A PLO or Phase Lock Oscillator is the combination of phase-locked loop and an oscillator. It is a device which continuously adjusts itself to match the parameters set by the engineer or user such as frequency and voltage or phase of an input or output signal. The Phase Lock Oscillator is used for generating, modulating, stabilizing, demodulating, recovering or filtering a signal obtained from the communication channels where data gets interrupted.

It is used in various industries like telecommunications, radio and other industries where clear and interruption-free wireless communication is required. A Phase Lock Oscillator is used for both analog and digital data transmission. Engineers make the best use of it for frequency modulation (FM) or phase modulation (PM) transmissions.

Commonly, Phase Lock Oscillators are inbuilt in the devices by the manufacture. But, in case of any particular need, discrete circuits can be purchased for microwave signal processing and ensuring the clarity in the data. These are available with frequencies ranging between 0.3 GHz and 45 GHz.

Many other devices are making the use of PLO to improve their performance like mobile phones, satellite receivers, and GPS systems. You can place an order for Phase Lock Oscillators online at sales@raditek.com and review them at Raditek Website where a wide range of devices is available to match your needs. You can check and compare products with different variants and features to pick the right fit.

Placing online order online also saves your time and money because the products are directly delivered at your doorstep within the stipulated time.