Rubidium oscillators from Raditek are atomic clocks that are recognized to deliver the best frequency accuracy and stability for long and even short timescales, as well as being significantly more resilient and durable than all other types of oscillators.

Raditek’s rubidium oscillators are therefore highly favored for applications needing precise timing, including GPS systems, commercial and military wireless and radar systems, TV broadcasting, and telecommunications infrastructure.

Rubidium oscillators that we provide are also preferentially used in DTH broadcast systems and commercial airborne systems like radars and missile systems and the like.

Our Rb oscillators are designed to access a rubidium hyperfine transition frequency of 6,834,682,610.904 Hz, the most precise resonance, to maintain a steady and consistent frequency output.

Raditek’s cutting-edge rubidium oscillators are seasoned to give stable and accurate frequency pulses over temperatures ranging from -30°C to +60°C.

Furthermore, rubidium oscillators from Raditek offer better signal integrity and zero-degree co-channel interference, low SNR, and a low aging rate of IE-9 over a ten-year timescale.

We offer over 20 different varieties of rubidium oscillators, of which precision and low-phase-noise rubidium oscillators are the most widely used category.

Raditek’s rubidium oscillators, which are housed in robust casings, have a lifespan of more than 100,000 hours.

Furthermore, Raditek’s rubidium oscillators are known for their dependability and affordable prices.

Full details can be found at the Raditek’s Frequency Standards – Rubidium Oscillators, Cesium Frequency Standards web page or at our website.

Raditek provides a cutting-edge band pass filter (BPF), including the Cavity, Waveguide, SAW and ceramic BPFs. We provide state-of-the-art cavity and diplexer filters too. All of these get preference over their competing products for usage in radio communication, power supplies, and audio electronics.

We offer ceramic filters for frequencies Under 1GHz up to 6GHz, SAW filters for 200 MHz to 1 GHz, for a broad range of frequencies from a few GHz to tens of GHz, with a few more designs to handle 15 GHz.

A Raditek band pass filter is engineered to allow only a specified range of frequencies to propagate into the system while blocking and attenuating signals outside of the calibrated range or band.

Raditek provides all types of band-pass filters, such as linear/non-linear, analogous/digital BPFs, active BPFs, and passive BPFs; all of these are used as per the system’s design and specifications.

While our passive band pass filter is the preferred component for applications that deal with very high frequencies, the active BPF is preferred for use in very low-frequency applications.

The Raditek Band pass filter is a preferred component for sensitive electronic infrastructure applications such as satellite and telecommunications seismology and meteorological data mining, LIDARS, EEGs, and audio signal processors.

Our latest band pass filter model is available at a compelling price.

Full details can be found at our Filters Webpage

Cavity Filters

Waveguide Filters

and the Raditek website.

Rubidium oscillators are oven-controlled crystal oscillators (OCXOs) whose output is tethered to an inbuilt rubidium (atomic) clock, which is noted for its precise frequency (oscillations) output.

Due to the internal and external working environments, a standard OCXO is prone to triggering weak amplitude, resulting in incorrect frequency output.

Telecommunication infrastructure, TV broadcast systems, GPS systems, LTE systems, and other time distribution services, require only such oscillators which ensure the delivery of accurate frequency timing and with the required intensity.

Therefore, the output of oven-controlled crystal oscillators is harnessed to an inbuilt rubidium “physics circuit” which provides consistent accurate oscillation at calibrated amplitude.

Such OXCOs are called Rubidium oscillators. Rb oscillators discipline the OCXO to its hyperfine transition of 6834682610.904 Hz.

Furthermore, unlike typical OCXOs, rubidium oscillators have a high-temperature tolerance. It functions without any drifts/distortions in temperatures ranging from Minus 30 degrees to Plus 60 degrees.

Out of the two types of a rubidium oscillator, the first one, a precision rubidium oscillator, is used for synchronization operation in Tele-network and measurement devices.

The second one, a low phase noise oscillator, is used in applications where the smallness of the size matters like in CDMA, WiMAX, and LTE base station.

Rubidium oscillators are cost-effective and are guaranteed for durability and best performance. Both available from Raditek Inc. See our website.

A solid-state power amplifier, also known as SSPA, increase the amplitude of the input signal without a change in its other parameters like frequency or the waveform.

Solid-state power amplifiers are used in applications that warrant large amplification of the input frequencies/signals. Power amplifiers are available in the frequency range from 0.30GHz to 100GHz.

Unlike their predecessors, SSPAs are fitted with solid-state transistors made of Gallium Arsenide (GaAs) or Gallium Nitrate (GaN) which do the bulk of amplification job. Further, GaAs transistor-based amplifiers are known to provide the best linearity and GaN-based amplifiers offer the best efficiency in terms of its output.

SSPA is used in applications that demand precision and accuracy such as airborne applications, missiles, radars, and other important and critical communication systems. These are also widely used in high-tech laboratory equipment and field testing systems.

Alongside its use in hi-tech systems, it is also widely used in wireless communications, broadcasting, and audio amplification applications.

The use of cutting-edge transistor technology has enabled solid-state amplifiers to outperform TWTAs in terms of efficiency, reliability, and cost-effectiveness.

Moreover, the most recent SSPAs are adaptable to X and Ku band applications and can factor in customers specifications too.

Furthermore, Raditek state-of-the-art flexible power amplifiers can handle ultra-high-frequency power ranging from Watts to Kilowatts with ease.

A Waveguide rotary joint is used to connect two different types of RF waveguides used in an application. In the rotating part the electrical continuity is achieved by using certain types of chokes eliminating the metal contacts.

Waveguide rotary joint has ports in U-style, L-style, or both the ports in I-style, vis-à-vis its rotational axis. Rotary joints are available for all frequency bands.

Waveguides rotary joints, also known as RF rotary joints, are used to transmit microwave energy from fixed lines to the rotating ones without degradation in their performance.

Waveguide rotary joint differs in terms of its fabrication, material used, cross-sections, and most importantly, its physical dimensions.

Most rotating joints have differently shaped cross-sections made of aluminum, brass, copper, and silver. However, its components are made of stainless steel, specialty steels, or jacketed bi-metallic alloys.

Flexible or twistable single, double, or quad ridged waveguide rotary joint components with as many apertures are also available in the trade. Waveguide dimensional parameters are very important to achieve calibrated output performance.

Performance features like frequency range, EIA size, VSWR, insertion loss and isolation are integral specifications that decide its presence and appropriateness in a circuitry.

Although waveguide rotary joints are manufactured as per U. S. military specification, it may be also customized as per required industrial or commercial specifications. A full range can be seen on the Raditek website.

OXCO is actually a normal quartz crystal oscillator that is housed in a mini thermostatic oven in order to maintain an constant (required) temperature at all times and conditions.

Changes in the temperature can cause a drift in the center frequency and drastically jeopardize the calibrated output parameters. And therefore, the use of oven-controlled crystal oscillators becomes eminent.

Aside from the oven, quartz crystal temperatures are also managed by providing it with various forms of trimming known as “Cuts,” which also aids in preserving the pulse’s stability.

However, it is necessary to carry out checks and recalibrate crystal and heat element aging to ensure accurate performance at all times.

OCXO is the top-performing quartz with remarkable frequency stability. As a result, they are used in the precision applications and systems like cell towers, commercial radio transmitters, and military communication equipment.

Though an OXCO is bigger, expensive, and consumes a greater power than its regular equivalents, it compensates for these disadvantages by providing super frequency stability over a long period of time that the conventional oscillators cannot offer.

There are two types of Oven-ized crystal oscillators available on the market:

These are used basis the application designs and circuitry needs. See Raditek website.

Waveguide rotary joint is used to connect two different types of RF waveguides in a communication system. With the use of a waveguide rotary joint, a free rotational movement can be achieved without degrading the performance of microwave RF signals.

A waveguide rotary joint component is an electro-mechanical component used to transmit microwave signals-radio bands or a pulse from other spectrum-from a stationary line to a rotating line or vice versa.

The needed electrical continuity in a waveguide rotary joint is achieved by using λ/4-chokes which eliminates metal contacts that are susceptible to metal fatigue and wear and tear.

A waveguide rotary joint can have both the waveguide ports a right angle to the rotational axis, or have a “U-style”, “L-style” or an “I-style” configuration depending upon the modules which are available across the frequency bands.

Most waveguide rotary joint use rectangular, circular, or elliptical cross-section made of aluminum, brass, bronze, copper, silver, stainless steel and metallic alloys.

Waveguide rotary joint is extensively used in airport surveillance radars, guided missile technology, and other radar applications.

Its rugged make, minimum phase WOW, stable phase linearity make a waveguide rotary joint a perfect fit for high power applications. These can also be which can also be custom-made for a specific design/application.

The quartz crystal in an electronic oscillator needs to be maintained at a constant operating temperature to prevent changes in its frequency due to variations in the ambient temperature.

Therefore, in order to maintain the crystal oscillator at a required temperature, it is housed in an oven with the thermostat devise that indicates the existence of the calibrated oven temperature. Such an improvised devise is called OCXO-Oven controlled crystal oscillator.

Normal operating temperature of a standard commercial OCXO is 75 °C but would vary from 30 – 80 °C depending upon the set-up and that of its industrial version is specified to -40 – +85 °C

Thus, such a design of an OCXO prevents temperature drifts and provides the highest stability that a crystal oscillator can provide. Further, frequency stability is also fine-tuned by the types of cuts on the quartz crystal-AT Cut and SC Cut.

Therefore it is quite obvious that OCXO is predominantly used in applications where the frequency control is a crucial factor like radio transmitters, cellular base stations, defense communication devices, and precision frequency measurement equipment.

OCXO is bulkier in size, expensive and power-consuming. However, the frequency and temperature stability provided by OCXOs are much better than what the TXCOs provide.

Routine service checks are recommended to assess the health of performing elements.

Microwave amplifiers are vital solid-state devices in the frequency range of 1to 100GHz to enhance the power, amplitude, or the oscillation span of input signals without providing additional distortion to its waveform, spectral composition and signal-to-noise ratio.

In other words, microwave amplifiers provide gain, stability, power, and linearity to the microwave signals received by it in a system.

Microwave amplifiers are used in all sorts of common electronic systems as also in ultra-tech electronic systems like electromagnetic compatibility systems (EMC), electromagnetic interference (EMI), defense systems, medical aid, and diagnostic systems, laboratory and field testing devices.

Microwave amplifiers are classified in many different ways. However, there are four broad categories based on the role it plays in generic super-heterodyne receiver.

Low noise amplifiers (LNA): Simple microwave amplifiers-takes low level signals from the transmission medium and amplifies it with minimal additional noise.

Power Amplifier (PA): Amplifies high level signals received and enhance it further to transmit it over lossy medium.

Linear signal amplifier (LSA): Generic amplifiers also called gain blocks. Provides signal gain with a system.

Driver amplifier (DA): Suited for single frequency operations as in synthesizers or amplifiers for local oscillator (LO) driving a mixer.

Microwave amplifier generates a lot of heat; hence need to ensure that it has a built-in cooling system, integral to its performance.

Rubidium Oscillators are a type of atomic clock with the most accurate time standards-not as precise as Cesium, though-which is used as a time distribution service to superintend telecommunication infrastructure, Television broadcast, aerospace, defense sector, and global navigation satellite systems.

Normal oscillator circuits are prone to energy loss resulting in weak amplitude.

Hence, in order to maintain consistency of accurate oscillation at constant amplitude, rubidium “physics circuitry” is used in OCXOs. Such oscillators are called rubidium oscillators.

Rubidium oscillators are basically improvised OCXOs wherein the accuracy of rubidium oscillation further secures oven-controlled crystal oscillator’s frequency output in terms of timing accuracy, and its amplitude.

It is known that the frequency pulse of an OXCO tends to change over time resulting in inaccurate periodicity of its pulse, on account of which, it may be faster or slower.

Such changes/discrepancies are detected by the rubidium section which then swaps it with the correct frequency pulse at the output stage.

In other words, rubidium oscillators ensure the most accurate frequency at the output level and thereby making it the most dependable oscillator for all electronic applications and systems.

In technical terms, rubidium oscillators harness the OCXO frequency output to rubidium hyperfine transition/cycle of 6 834 682 610.904 Hz.

More than twenty types of rubidium oscillators are used in various applications.