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.

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.

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.

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.

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.

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.

Dielectric Resonator Oscillators (DRO) are the oscillators that makes use of dielectric resonators as the frequency determining element while producing signals. These signals exhibit the features of exceptional signal stability, low micro-phonics, and high Q, making the oscillator known as a Dielectric Resonator Oscillator.

The resonant frequency of Dielectric Resonator Oscillators depends on its dielectric constant, the shape of the material used that may be rectangular or disc, and the physical dimensions of the material. In most of the cases the frequency of DRO is fixed but to get any desired result, a slight mechanical tuning can be achieved by a self-locking screw and or electrical tuning can be attained by an integrated Varactor diode.

In case of mechanical tuning, the resonant frequency can be modified by bringing a tuning screw close to the DRO. When you need to electrically tune it a mutually coupled resonant circuit is created by combining the Dielectric Resonator Oscillator to a microstrip line connected to the varactor. The resonant frequency varies according to the variation in bias voltage dependent capacitance of the varactor.

The features of Dielectric Resonator Oscillators include high Q-factor, exceptional temperature stability, very low phase noise, small size, and low cost, etc. You can place an order for a DRO at “sales@raditek.com”. A wide range of variants are available see Raditek Website.

Raditek offers Dielectric Resonant Oscillators (DRO) in the frequency range 3 to 42GHz. These Dielectric Resonant Oscillators (DRO) can be harmonically locked to either internal or external References and then are known as Phase Lock Oscillators (PLO) with low phase-noise and Stability to 5 ppm over 0 to 50°C. Raditek custom DROs use high-performance devices and deliver very low phase noise and spurious performance.

Solid State Power Amplifier (SSPA) converts a low-power radio-frequency signal into a higher power signal. The Raditek SSPA product line was designed to use in high-end technology applications like Airborne, Radars, Missile, and Communication applications. Further, there are many types of the solid-state power amplifier including the comparison between Gallium Arsenide (GaAs) and Gallium Nitride (GaN) Solid State Power Amplifiers. These can be compared in many aspects and here are a few of them –

1. GaAs operates at a lower voltage, and therefore, it is used in mobile devices like mobile phones. On the other hand, GaN operates at a higher voltage, and it can be used for high power applications.

2. GaAs SSPA degrades at a higher temperature while GaN has thermal conductivity three times higher than that of the latter one. So, GaN devices can run for more extended hours even at a higher temperature.

3. Since GaAs SSPA cannot withstand higher temperature, it is not as reliable as GaN devices. GaN keeps the devices cool even after being operated for longer hours.

4. GaAs devices are again less efficient than GaN devices. It is so because GaN has a crystal lattice structure and electron mobility properties. It conducts electricity more efficiently and provides a higher level of RF efficiency. It also facilitates the reduced loss of I2R power during conduction.

5. GaAs devices are cheaper as compared to GaN. The devices having GaN are two to three times expensive than the latter one. Still, GaN is in demand because of possessing the capacity to provide desired performance.

You can purchase any of the Solid State Power Amplifier according to your requirements at the Raditek website where you can choose reliability and efficiency.

Filters are used in every industry in different ways and for different purposes. Similarly, BPFs (Band Pass Filters) are also used as a filter but, they filter signals instead of any physical component or data. A BPF is the combination of a HPF (High Pass Filter) and a LPF (Low Pass Filter).

In technical language, Band Pass Filter is an electronic device that let only those signals to pass through which are within a particular frequency range. It is commonly used in wireless transmitters and receivers to eliminate the signals of undesired frequencies that cause interference. There are many types of BPFs such as Wide Band Pass Filters, Narrow BPF 0, Active, Passive, Linear, Non-Linear, Time-Variant, Time-Invariant, Analog, and Digital Band Pass Filter, etc. The user can pick any of them on the basis of his requirement. Wide and Narrow BPFs are the most commonly used filters.

A Wide Band Pass Filter is formed by cascading lowpass and highpass sections in an alternative circuit. A Narro Band Pass Filter is also known as ‘Multiple Feedback Filter’ because it has two feedback paths and uses only one operational amplifier while employing multiple feedbacks.

A Band Pass Filter is applied to achieve many purposes. Here are the applications of BPF –

1. It helps to prevent the transmitter from interfering with other stations at adjacent frequencies by limiting the bandwidth of the o/p signal.

2. In a receiver, it lets only the signals of required frequency to pass.

3. It optimizes the signal-to-noise ratio and sensitivity.

4. It is used in Sonar, Seismology, EEGs, Electrocardiograms, lasers, LIDARS, and Audio Signal Processing, etc.

In a nutshell, a wide range of industries are taking the benefits of Band Pass Filters. Placing an order via the Raditek website is easy and, convenient for economic purchasing.

A waveguide is defined as a hollow conducting tube which transmits electromagnetic waves. These waveguide components are available in rigid and flexible forms. Rigid Waveguides cannot be bent or twisted if needed, and on the other hand, Flexible Waveguides can be bent or twisted according to their type and design. There are three primary types of flexible waveguide. One is flexible and twistable, the second is flexible non-twistable, and the third is flexible seamless. We focus on flexible and twistable these are made from a helically wound silver plated brass strip, with additional mechanical support is offered from a variety of protective jackets. These waveguide sections can flex in both the E and H planes and will also twist, making them a great solution in many different types of applications. Our Flexible Twistable Waveguides operate 2.6 to 40 GHz over thirteen frequency bands. They are typically used in misaligned waveguide systems where traditional rigid waveguide sections are not possible. Provides a cost effective solution for the satellite communications market. Flexible twistable is sealed electrically via a friction joint, the core is manufactured from preconvoluted silver clad brass strip helically wound to extremely close tolerances around a rectangular mandrel, surrounded by a flexible and twistable neoprene sleeve to enable the core to be pressurized. The ends of the waveguide are terminated with brass flanges available in eighteen multiple flange styles rolls up easily for fast air shipment (compared to the difficulty packaging shipping rigid waveguide. You can find a wide range of Flexible Waveguide at the Raditek website www.raditek.com. The above information will help you to figure out the right piece for your requirement. You can also place an order for Flexible Waveguide by contacting sales@raditek.com and get timely delivery at a competitive price.