Yig tuned oscillator yto for a very wide band that can reach decade tuning with high frequency stability and for frequency range of 1 ghz to 50 ghz. Costeffective, powerefficient and configurable yig. Wavetek 907 repair, yig oscillator teardown kerry d. For the setup of such components magnetically tunable resonators are being deployed. In this study, a spin torque oscillator based on the insulating material. The oscillator circuit associated with the common base.
A typical 8 18 ghz yig oscillator has a main tuning coil sensitivity of 20 mhzma. The basic principle behind the working of oscillators can be. I sourced for an alternative yig that should be a close match 50867259 yig oscillator. One can easily achieve respectable phase noise performance with a fairly. Yig is a very interesting microwave material with properties that can be substantially modified by the application of a strong magnetic field. One can easily achieve respectable phase noise performance with a fairly simple single or dualloop pll by tolerating the slow tuning speed, large size, high power consumption, and relatively high cost of a yig oscillator. I have put some thought into this, and i plan to do it like this. For a digitally controlled yig oscillator and filter, a driver is needed that can convert serial data from a microcontroller to a well defined, stable, and low noise current. Williams, a leader in the selfeducation of investors first began trading in 1959. Request pdf a wide band, low phase noise, differential yig tuned oscillator yig tuned oscillators yto offer an unbeatable combination of broad band electronic tuning and extremely low phase. The ultimate stellexminiyigsynthesizer controller l. A wide band, low phase noise, differential yig tuned. Any luck purchasing yig tuned oscillators from ebay.
The fundamentals of signal generation electronic design. The yig sphere behaves like a resonator with to8000 unloaded q resulting in very good frequency stability. The permanent magnet is tuned at the factory to a cu s tomer selected free running frequency. This will usually be a voltage amplifier and may be biased in class a, b or c. We did not publish schematics for these microcircuits. Spintorque oscillator in an electromagnet package article pdf available in ieee transactions on magnetics 4811. A yig sphere placed at the center of a coupling loop served as a resonator to the transistor emitter. Pdf milc45662 s126 17173silabs s163 812 ghz yig tuned oscillator pm7015x pm7892 sivers yig yig oscillator hp electromagnetic pulse generator jammer pm7288x pm7101x x. This oscillator uses an lc resonator to set the oscillation frequency and a capacitive divider to establish the loop gain. From the picture below, you can clearly see the orthogonal coupling wires around the yig sphere click to see the picture in higher resolution.
Tms has both inhouse and offshore yig manufacturing capabilities to control costs and meet stringent capacity and deliver requirements for nonitar products. This yig resonator is influenced by the magnetic field that is generated by the tuning coils. Yig is a very interesting microwave material with properties that can be substantially modified by the application of a strong. The circuit file is shown in figure 2, along with the output file. The average output power of the yig is dbm in my frequency span of interest. Theyre intended for use with the stellex endwave 6755725f and 6755726f ytos, also widely available on ebay, but are easily modified for use with other yto models. As major frequencydetermining component yig single crystals are applied. Aug 26, 2019 avantek k band yig oscillator yo ghz with isolator ebay aantek satisfied that the module would behave somewhat as expected, i hooked it up to a spectrum analyzer. Yig single crystals are most commonly used for the construction of electronically tunable oscillators yig oscillator and filters. One particular device of interest is the spin toque oscillator, which is a nanoscale source of microwave power.
Avantek k band yig oscillator yo ghz with isolator ebay aantek satisfied that the module would behave somewhat as expected, i hooked it up to a spectrum analyzer. Oscillator design using modern nonlinear cae techniques fliohewlett 3 i. The common gate fet oscillator circuit is the most common yig oscillator topology. The omniyig yom series provides fundamental yig tuned oscillator designs electronically tuned in octave and multi octave bands. Yig oscillators are well known for broadband configurable signal source but at the cost of size, power and integrability in ic form. Jii packard slide 10 tunable oscillators vco and yig tunable oscillators lnp. Cts knights 97037570 octal base plugin oscillator similar to above, also 100 khz.
The center of the yig oscillator is protected and shielded by a small piece of copper on the top. I have a couple of avantek yig oscillators, models sf6 and avm both are 2 4 ghz units. Yig based solutions are usually simpler since the yig oscillator can mask many design imperfections. Pdf spintorque oscillator in an electromagnet package. The connections of a yig oscillator are shown in the circuit. Oscillators basically convert unidirectional current flow from a dc source into an alternating waveform which is of the desired frequency, as decided by its circuit components. Rather than writing down all the numbers, a quick test setup, with two power supplies, an eip 545a counter with builtin power meter, an agilent 66319d power supply used as current source for the main tune and fm coils of the yto, a 14. Yigbased solutions are usually simpler since the yig oscillator can mask many design imperfections.
This high q characteristics provides very low phase noise and multioctave frequency tuning. Stabilize yig oscillator this yig generator runs from 2 ghz to 8 ghz but is highly unstable old marconi type generator and often drifts several mhz in a few seconds. Compact, widely tunable, halflambda yig oscillator request pdf. If you have your yig oscillator out of the rf deck, reconnected to the power cable and turned on. Products has a long history of supplying yig products and is known as the industrys leading. Designs covering frequency ranges from 500 mhz to 44 ghz in either narrow band or wide band con. This additional material on yig technology just in from james, a semiconductor guy with some rf test experience. Us20020005762a1 tuning circuit for a yig oscillator. Aug 03, 2014 the center of the yig oscillator is protected and shielded by a small piece of copper on the top. They have a stand ard pin configuration, which is almost always the same fig. Yig is a ferrite with very high resistivity and a sharp ferrimagnetic resonance.
The oscillator is the active device, the sustaining device that adds power, with a loop coupled to the yig sphere tunable resonator in one terminal, to control its frequency of oscillation. Device parasitics which are not shown but would have to be used in any simulation, and considered in any explanation complete the oscillator. A simple approach to yig oscillators vhf communications magazine. The story of how yig behaves is quite beyond the scope of this document, but it is highly interesting for. The superb linearity of these oscillators is contributed by the ideal design. This makes the modules tuning behavior more like the next lower range, for example the av simonsdialogs a wild collection of random thoughts, observations and learnings. We demonstrate a new yigtuned oscillator yto design based on a planar yig resonator that supports halflambda standing spin wave. The collector voltage is in phase with the input for a common base configuration. The combination of the high q and broadband tuning range of the. Pdf design techniques that have been succcessfully used on the development of xband gaas fet yigtuned oscillators are presented. Yig tuned oscillator yto yig tuned filter ytf driver. His background in engineering, physics, psychology and integration of mind. Fortunately, it has an external tune voltage 0 10 v dc so im looking for a way to phase lock the output and then output a proper tune voltage.
Yig filters are used for their high q factors, typically between 100 and 200. The goal is to determine the conditions where the open. Yig oscillator basics yig oscillator app note,vendors. Including all types of yig tuned oscillators, yig, yig tuned, ryto, ryad, rydd, analog driver, digital driver. The yig tuning element is treated as a single unit and is not resolved into an equivalent lc circuit. With a 30 year heritage in yig technology, tms has unsurpassed capabilities as your single source for yig. Set the analyzer to 1 ghz center frequency and zero span. Yto yig tuned oscillator and yig yttriumirongarnet. A tuning circuit for a yig oscillator 1, wherein the output frequency f of the yig oscillator 1 which is reduced by a frequency divider 2 or mixer is compared in a phase detector 3 with a lower reference frequency f r and via a loop filter 5 the output voltage u of the phase detector 3 feeds the aircored coil 7 of the yig oscillator 1 serving for fine tuning, characterised in that the main coil 6 of the yig oscillator 1 is also fed by the output voltage u of the. Teledyne microwave solutions yig products formerly ferretec. Instead, a direct method using reflection coefficients measured.
Yig oscillator50867500 schematic for 83752b keysight. Raditek providing high quality, low cost wireless and microwave products. Core element is a small yig sphere, placed in a magnetic field. Request pdf a wide band, low phase noise, differential yig tuned oscillator yig tuned oscillators yto offer an unbeatable combination of broad band electronic tuning and. Fabrication of nanoscale spin torque oscillator based on. The yig ball, which sits at the tip of a short ceramic rod, is positioned in the middle of a coupling coil u bolt. It has interesting magnetic properties which allow it to perform as a tunable microwave filter for example. Including all types of yig tuned oscillators, yig, yig tuned, ryto, ryad, rydd. With a good number of yig oscillators ytos around, time for a few tests.
It mentions yig oscillator application note and vendorsmanufacturers of yig oscillator. The oscillators are a cheap way to generate very high. A wide band, low phase noise, differential yig tuned oscillator. Notes on stellex yig synthesizer performance and control. The controller scheme presented here is the ultimate plug and play solution for the rf minded ham that dont want to spend any time on digital and softwaremicrocontroller. The differential output from the transistor pair is a perfect. Pdf design theory for broadband yigtuned fet oscillators. His background in engineering, physics, psychology and integration of mind and body has created a unique way of looking at the markets. With the selector switch in the off position, a large. These units feature a novel coupling technique to provide maximum rf power output and a lower second harmonic and other spurious responses. They have a standard pin configuration, which is almost always the same fig. After carefully removing the thin copper cap, we can see the core of the yig oscillator. For startup of the oscillator, it is required that there be gain negative resistance.
After carefully removing the thin copper cap, we can see the core of the yig. Although the common gate fet yig oscillator has be tter phase noise than most other technologies e. Pdf milc45662 s126 17173silabs s163 812 ghz yig tuned oscillator pm7015x pm7892 sivers yig yig oscillator hp electromagnetic pulse generator jammer pm7288x pm7101x xband waveguide isolators 812 ghz yig tuned filter. Print version of this book pdf file oscillator core examples oscillator cores cclappcore, chartleycore, cmodifiedclappcore, and cmodifiedcolpittscore are compatible with simulation and measurement setups outlined by the generic oscillator example. Bandwidth of the circuit should be a few 100 hz, and maximum current in the 300 ma range, so it needs to run of a reasonably high supply voltage, otherwise, the inductance. Jul 21, 2019 an oscillator is a circuit which produces a continuous, repeated, alternating waveform without any input.
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