The basic form of a harmonic oscillator is an electronic amplifier connected in a feedback loop. I sourced for an alternative yig that should be a close match 50867259 yig oscillator. For the setup of such components magnetically tunable resonators are being. Aug 03, 2014 the center of the yig oscillator is protected and shielded by a small piece of copper on the top. At very high frequency offsets, both oscillators should demonstrate the same behavior. These oscillators are available in models covering the frequency ranges from 2 to 18. This resonator is coupled to a lownoise active device to create an oscillator. The superb linearity of these oscillators is contributed by the ideal design of the magnetic circuit and the coupling technique used between the yig sphere and. Yig oscillator connections the connections of a yig oscillator are shown in the circuit. 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. The common gate fet oscillator circuit is the most common yig oscillator topology. The following 5 files are in this category, out of 5 total.
For frequency control and timing applications a tutorial. In this tutorial you will build and test a high frequency colpitts oscillator using a parallel resonant lc circuit. Phase locked loop ku band frequency synthesizer based on a. Each module utilizes a yig oscillator as its tunable rf lo, which. Inser ted in b is the large signal equivalent circuit of a differential pair from chap. Yig filters are used for their high q factors, typically between 100 and 200. Including all types of yig tuned oscillators, yig, yig tuned, ryto, ryad, rydd, analog driver, digital. Micro lambda wireless datasheets rfmicrowave frequency.
Avantek yf850107 yig filter artisan technology group. The sc5307a and sc5308a are high performance, triple stage, heterodyne downconverters designed to meet demanding applications such as rf instrumentation, wireless. From the picture below, you can clearly see the orthogonal coupling wires around the yig sphere click to see the picture in higher resolution. Description the yig tuned oscillator yto is a type of tuned oscillator where the frequency determining, device in a negative feedback circuit. Oscillator design using modern nonlinear cae techniques fliohewlett 3 i. A yig oscillator is essentially a yig sphere with high unloaded quality factor q. Compare homebrew pole pieces with the core and coil from a commercial yig oscillator. A simple approach to yig oscillators vhf communications magazine. Core element is a small yig sphere, placed in a magnetic field. Microwave synthesizer modules yigtuned filters yig. This document provides reference information on the use of the oscillator designguide. The 16 online conversiont csv to pdf mhz crystal oscillator module is designed to handle offchip crystals that have a frequency of.
In an rc oscillator circuit, the filter is a network of. 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. It has interesting magnetic properties which allow it to perform as a tunable microwave filter for example. Oscillator design guide structure the oscillator designguide is integrated. 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. 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. This high q provides very low phase no ise in oscillators and multi octave frequency tuning for both oscillators and filters. 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. 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. As major frequencydetermining component yig single crystals are applied. Yig harmonic mixer with a cover and magnetic system removed.
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. Single amc and pa modules, named amc23 and pa23, will also be used for both band 2 and band 3. Note fine wires to a small coil for finetuning frequency in real time, while the heavy wires provide dc bias of magnetic field. Pdf design techniques that have been succcessfully used on the development of xband gaas fet yigtuned oscillators are presented. These properties allow yig resonator oscillators to achieve drolike phase. With input rf frequency ranging from dc to 6 ghz, the modules have selectable if bandwidths of 80 mhz, 160 mhz, and 320 mhz. The omniyig yom series provides fundamental yig tuned oscillator designs electronically tuned in octave and multi octave bands. A wide band, low phase noise, differential yig tuned oscillator. Each oscillator will have test data sheet and the exact voltage will be. Including all types of yig tuned oscillators, yig, yig tuned, ryto, ryad, rydd, analog driver, digital driver. 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.
Also, a special design enables very fast tuning with a 3 db bandwidth of typically 2. Yig oscillator basics yig oscillator app note,vendors. They are available in standard solid magnetic shell or in fast sweeping models. Yigtuned oscillators provide the lowest phase noise for broadband microwave applications. 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. Sep, 2011 hi pete b the 50867500 is a dual yig oscillator that is a sealed microcircuit and is not field repairable. Oscillators are electronic circuits that generate an output signal without the. With the selector switch in the off position, a large capacitance is. Pdf design theory for broadband yigtuned fet oscillators. Although the common gate fet yig oscillator has be tter phase noise than most other technologies e. This yig resonator is influenced by the magnetic field that is generated by the tuning coils. Oscillator designguide reference this manuals provides reference information on the use of the oscillator designguide. Pdf a wideband doublepll microwave frequency synthesizer.
Yig is a very interesting microwave material with properties that can be substantially modified by the application of a strong magnetic field. Yigtuned oscillator design on printed circuit board using. Yig technology is the most effective solution to a variety of rfmicrowave frequency generation and filtering challenges especially when the absolute lowest phase noise and multioctave tuning is. Yttrium iron garnet yig is a crystal that has very high q characteristics. Product frequency description mlmb series 2 ghz to 8 ghz plugin board, wide band con. Tms has both inhouse and offshore yig manufacturing capabilities to control costs and meet stringent capacity and deliver requirements for nonitar products. 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. Oscillator designguide print view ads 2009 keysight. Microwave synthesizer modules yigtuned filters yigtuned. The primary objective of this tutorial lesson is to underline the challenges of analyzing. Yigtuned oscillators provide the lowest phase noise for broadband. The pll is based on an integrated circuit adf41020 from. The yig oscillator at 10ghz is a commercial one that allows voltage tuning over a 1 ghz range.
This additional material on yig technology just in from james, a semiconductor guy with some rf test experience. Yig oscillator50867500 schematic for 83752b keysight. These core oscillator circuits are configured for low resistance loads. Yto yig tuned oscillator and yig yttriumirongarnet. Esr spectroscopy employing yigtuned oscillator in conjunction with lowquality factor resonators lazar shtirberg, michael shklyar, and aharon blank schulich faculty of. Oscillator design guide structure the oscillator designguide is integrated into agilent eesofs advanced design system environment, working as a smart library and interactive handbook for the creation of useful. Communications system using gunplexer transceivers. Oscillator cores cclappcore, chartleycore, cmodifiedclappcore, and cmodifiedcolpittscore are compatible with simulation and measurement setups outlined by the generic oscillator example. Micro lambda wireless offers the largest yigtuned oscillator product line in the market today. Yig is a ferrite with very high resistivity and a sharp ferrimagnetic resonance. An improved ultralowphase noise tunable yig oscillator operating. For the setup of such components magnetically tunable resonators are being deployed. Jii packard slide 10 tunable oscillators vco and yig tunable oscillators lnp.
The differential output from the transistor pair is a perfect configuration match for. Yig single crystals are most commonly used for the construction of electronically tunable oscillators yig oscillator and filters. After carefully removing the thin copper cap, we can see the core of the yig oscillator. Positive feedback amplifiers oscillators lc and crystal.
Equivalent circuit of an oscillator circuit with a loop coupled yig resonator. Yig tuned oscillator yto yig tuned filter ytf driver. Because of high frequencies, small inductance can be used for the radio frequency of oscillation. Wavetek 907 repair, yig oscillator teardown kerry d. The yig ball, which sits at the tip of a short ceramic rod, is positioned in the middle of a coupling coil u bolt. Mwrf com sites mwrf com files uploads 2016 01 fig 01 0. Yig crystals are grown, similar to sil icon crystals. Yig is a ferrite material that resonates at microwave frequencies when immersed i n a dc magnetic field. The story of how yig behaves is quite beyond the scope of this document, but it is highly interesting for. I have a couple of avantek yig oscillators, models sf6 and avm both are 2 4 ghz units. The presented oscillator is modeled as a oneport oscillator employing a sige.
They have a standard pin configuration, which is almost always the same fig. Esr spectroscopy employing yigtuned oscillator in conjunction with lowquality factor resonators lazar shtirberg, michael shklyar, and aharon blank schulich faculty of chemistry, technion israel institute of technology, haifa 32000, israel email. A thn fr dnn yig ttrrn rnttnd trntr lltr tnbl vr th rn f frn fr 5 t 95 m prntd h pprh tn dffr pprbl fr tht d n th dn f nvntnl ctnd lltr on jr dffrn tht th yig tnn hn ltrll ntrlld h yig tnn lnt trtd nl nt nd nt rlvd nt n vlnt c rt intd drt thd n rfltn ffnt rd t ntr trnl t hrtrz vr dn t ppld h trntr l hrtrzd b rfltn nd trnn ffnt. Some of these products include double balanced mixer schematics, dielectric resonators, and yigtuned oscillator circuits. The band 1 lo will operate continuously by means of a dedicated yig oscillator and a dedicated reference in order to always coupler with be available for calibration purposes. Looking for yig oscillators and dielectric resonators. The oscillator designguide is integrated into agilent eesofs advanced design system environment, working as a smart library and interactive handbook for the creation of useful designs. This high q characteristics provides very low phase noise and multioctave frequency tuning. Yig drivers for above design are supplied in one integral package with oscillator. Raditek providing high quality, low cost wireless and microwave products. We can provide yig oscillators with 40 dbc second harmonic. Teledyne microwave solutions yig products supplies both closedand open loop yig filters, yig oscillators, yigtuned harmonic generators, and yigbased.
Photo from pdf a%20simple%20approach%20tyo%20yig%20oscil. The commongate fet oscillator circuit is the most common yig oscillator topology. These units feature a novel coupling technique to provide maximum rf power output and a lower second harmonic and other spurious responses. In an rc oscillator circuit, the filter is a network of resistors and. The ultimate stellexminiyigsynthesizer controller l. The superb linearity of these oscillators is contributed by the ideal design. Teledyne microwave solutions yig products supplies both closedand openloop yig filters, yig oscillators, yigtuned harmonic generators, and yigbased. This resonance is directly proportional to the strength of the applied magnetic field and has very linear tuning over multi octave microwave frequencies. Tuned oscillator is a circuit that generates a radio frequency output by using lc tuned resonant circuit. The adf4107 chip seemed like a good starting point, since its specified for coverage from 1 ghz 7 ghz.
Technology description yig tuned filters w hat is yig. Gigatronics has 30 years of design experience to support your custom yigtuned oscillator and driver applications. Device parasitics which are not shown but would have to be used in any simulation, and considered in any explanation complete the oscillator. It mentions yig oscillator application note and vendorsmanufacturers of yig oscillator.
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