Yig filters and oscillators from teledyne microwave solutions teledyne microwave solutions tms has a long history of supplying yig products and is known as the industrys leading supplier. Spintronic devices driven by pure spin current have recently become a subject of intense research 1,2,3,4,5,6,7,8,9,10,11,12,14 owing to their flexible layout not restricted by the requirement. Teledyne defense electronics, llc teledyne microwave solutions tms delivers many high quality yig products including closed and open loop yig filters, yig oscillators, yigtuned harmonic generators, and yigbased integrated receiver frontendstuners. Yig filters are used for their high q factors, typically between 100 and 200. Although the common gate fet yig oscillator has be tter phase noise than most other technologies e. The fast stochastic oscillator can be used effectively to. This decreases the residual fm of the output signal. Spin hallinduced autooscillations in ultrathin yig grown. 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. Tunedinput and tunedoutput oscillator tunedoutput tunedinput feedback coupling ci rf output c 2 c 1 l 1 2 c co c l 2 1 2 0 2 1 1 l c f s. This additional material on yig technology just in from james, a semiconductor guy with some rf test experience.
The synthesizer is based on a yigtuned oscillator yto, a sampling phase detector spd working as a subharmonically pumped mixer and a double pll integrated circuit for stabilizing the. Oscillator design using modern nonlinear cae techniques fliohewlett 3 i. In price charts, the %k line typically appears as a solid or bold line, and the %d line appears as a dotted or softer line. Oscillators electronic circuits and diagramselectronic. Jii packard slide 10 tunable oscillators vco and yig tunable oscillators lnp. First a 3db attenuator, just to make the rest look more like 50r. Although the common gate fet yig oscillator has be tter. Tiny yig tuned oscillator yto takes aim at high frequency. Tuned oscillator is a circuit that generates a radio frequency output by using lc tuned resonant circuit. Yig tuned oscillators provide the lowest phase noise for broadband microwave applications. Tms yig products support radar, communications, ecm, laboratory instrumentation, commercial.
Notes on stellex yig synthesizer performance and control. Enabling next gen yig vida products is a leading innovator of highperformance, surface mount, lowpower, small size, and low phase noise oscillators and filters. After carefully removing the thin copper cap, we can see the core of the yig oscillator. Yig is listed in the worlds largest and most authoritative dictionary database of abbreviations and acronyms the free dictionary.
Positive feedback amplifiers oscillators lc and crystal. From the picture below, you can clearly see the orthogonal coupling wires around the yig sphere click to see the picture in higher resolution. For the setup of such components magnetically tunable resonators are being deployed. An example for simple type of mechanical oscillator is a clock pendulum. Hi pete b the 50867500 is a dual yig oscillator that is a sealed microcircuit and is not field repairable. In addition, surfacemount components are used in the oscillators to minimize the effects of vibration and temperature changes.
Yttrium iron garnet spheres yig spheres serve as magnetically tunable filters and resonators. This multiplier with its wr28 transition is mounted upper right on the. According to the oscillation within atoms, the atomic clock keeps time. Miniyig oscillator 3 11 ghz center frequency yig tuned oscillator features low phase noise. This brick requires a 960mhz reference which is then tcxo locked back to 10mhz. I sourced for an alternative yig that should be a close match 50867259 yig oscillator. The fast stochastic oscillator compares two lines called the %k and %d lines to predict the possibility of an uptrend or a downtrend. This oscillator uses an lc resonator to set the oscillation frequency and a capacitive divider to establish the loop gain.
In an rc oscillator circuit, the filter is a network of resistors and. Microwave oscillator design application note a008 introduction this application note describes a method of designing oscillators using small signal sparameters. Yigtuned oscillator design on printed circuit board using. Micro lambda yig tuned oscillators with wireless, inc. The rf output section con tains a yigtuned multiplier ytm which either passes the amplified yto signal or multiplies it by 2, 3, or 4 to cover the 2to26. In this tutorial you will build and test a high frequency colpitts oscillator using a parallel resonant lc circuit. Hello i have a hp8595a where the yig oscillator hp part nuber 50867833 is down frequentie.
We did not publish schematics for these microcircuits. Yig filters and oscillators from teledyne microwave solutions. The yig sphere and rf circuit are located in the gap between the pole pieces. It is above all their good signal quality, with a low level of phase jitter, and their broad band characteristics with a very linear tuning curve which make them interesting, or even. Cylindrical yig oscillators with positive input serial drivers 40. Microwave synthesizer modules yigtuned filters yig. The commongate fet oscillator circuit is the most common yig oscillator topology. Experimenting with a stellex yig oscillator overview stellex 6755. It mentions yig oscillator application note and vendorsmanufacturers of yig oscillator.
It has interesting magnetic properties which allow it to perform as a tunable microwave filter for example. The authors present a fundamental yig tuned oscillator which covers the frequency range of 2 to 22 ghz, using a highfrequency silicon bipolar transistor and a single yig sphere. Yto yig tuned oscillator and yig yttriumirongarnet. Interestingly enough, we can write an equivalent electrical circuit to represent the mechanical properties of the crystal. With a 30 year heritage in yig technology, tms has unsurpassed capabilities as your single source for yig oscillators and offers best in industry low phase noise. The collector voltage is in phase with the input for a common base configuration. It is a circuit that produces a repetitive waveform on its output with only dc supply as input. Another yig application is yig oscillators, where the sphere acts as a tunable frequencydetermining element. Next gen yig high frequency oscillators and filters.
Up to 1 ghz tuning range outstanding phase hit performance in 64 and 128 qam radio systems available in sma connectorized package specifications. I have put some thought into this, and i plan to do it like this. For frequency control and timing applications a tutorial. The common gate fet oscillator circuit is the most common yig oscillator topology. Teledyne microwave solutions yig products supplies both closedand open loop yig filters, yig oscillators, yigtuned harmonic generators, and yigbased. 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. November 20, 2000 10 ghz phaselocked yig source rev. Todays market requirements specifically, fast switching speed encourage the use of vcobased technologies, which, however, normally exhibit higher. This resonator is coupled to a lownoise active device to create an oscillator. This will usually be a voltage amplifier and may be biased in class a, b or c. Yigtuned oscillators don ieller senior editor the mlpw and mlpx oscillators use proprietary magnetic materials in a magnetic structure that is miniaturized, ridged, and shock mounted. The practical applications of oscillators include computers, clocks, watches, radios etc. The average output power of the yig is dbm in my frequency span of interest.
Esig o a yigue osciao y ie iag i a esis esee i aia uime o e equiemes o e egee o mase o sciece i eecica egieeig a ew esey isiue o ecoogy h th t b d nl th d rrd t th rht f th thr. Yig oscillator basics yig oscillator app note,vendors. With a good number of yig oscillators ytos around, time for a few tests. Device parasitics which are not shown but would have to be used in any simulation, and. This high q characteristics provides very low phase noise and multioctave frequency tuning. The background theory is first developed to produce the design equations. Yig oscillator50867500 schematic for 83752b keysight. Yttrium iron garnet spheres yig spheres serve as magnetically tunable filters and resonators for microwave frequencies. The hartley oscillator is a particularly useful circuit for producing good quality sine wave signals in the rf range, 30khz to 30mhz although at the higher limits of this range and above, the colpitts oscillator is usually preferred.
Anritsu wiltron c147701 yig oscillator assembly available from these sellers. These properties allow yig resonator oscillators to achieve drolike phase. With the selector switch in the off position, a large capacitance is switched across the main yig coil when in cw or slow sweep. Looking for online definition of yig or what yig stands for. The fracn can be used with a reference oscillator up to 50 mhz, and operates at a frequency of up to 6. In an rc oscillator circuit the input is shifted 180 o through the feedback circuit returning the signal outofphase and 180 o again through an inverting amplifier stage to produces the required positive feedback. The center of the yig oscillator is protected and shielded by a small piece of copper on the top. Raditek providing high quality, low cost wireless and microwave products. The primary objective of this tutorial lesson is to underline the challenges of analyzing oscillator circuits.
The yig ball, which sits at the tip of a short ceramic rod, is positioned in the middle of a coupling coil u bolt. The basic form of a harmonic oscillator is an electronic amplifier connected in a feedback loop. As major frequencydetermining component yig single crystals are applied. 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. Gigatronics has 30 years of design experience to support your custom yig tuned oscillator and driver applications. Because of high frequencies, small inductance can be used for the radio frequency of oscillation. Pdf a wideband doublepll microwave frequency synthesizer. Wavetek 907 repair, yig oscillator teardown kerry d.
Figure 52 vco and yig oscillator phase noise com parison. Including all types of yig tuned oscillators, yig, yig tuned, ryto. The goal is to determine the conditions where the open. This yig resonator is influenced by the magnetic field that is generated by the tuning coils. Yig single crystals are most commonly used for the construction of electronically tunable oscillators yig oscillator and filters. The differential output from the transistor pair is a perfect configuration match for the naturally differential coupling loops of this yig tuned filter.
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