Solidstate oscillators whose tunable element is a sphere of yttriumirongarnet yig. Yig tuned oscillator yto yig tuned filter ytf driver. Yig single crystals are most commonly used for the construction of electronically tunable oscillators yig oscillator and filters. A low phase noise yig oscillator based phase locked loop couples an output frequency to a delay line discriminator to provide a phase noise feedback signal to a wideband tuning port. These oscillators are available in models covering the frequency ranges from 2 to 18.
Yig drivers for the above models are supplied in one integral package with oscillator. Teledyne microwave solutions is pioneer in design, development and manufacturing of yig oscillators. Device parasitics which are not shown but would have to be used in any simulation, and considered in any explanation complete the oscillator. We did not publish schematics for these microcircuits. Replacing yigtuned oscillators with silicon by using an. Dissembling the yig oscillator was a bit more involved. Gigatronics has 30 years of design experience to support your custom yig tuned oscillator and driver applications. The yig ball, which sits at the tip of a short ceramic rod, is positioned in the middle of a coupling coil u bolt. Bradley nrao, charlottesville, va 22903 24 august 2000 in this memo, we present measurements of the noise of yig tuned oscillators ytos at their fundamental. I ordered some samples from analog devices at the time, but only just got around to. Us20050275479a1 low noise yig oscillator based phase locked. Us20050275479a1 low noise yig oscillator based phase. Insidepenton com electronic design adobe pdf logo tiny. Spin hallinduced autooscillations in ultrathin yig grown.
Although both these oscillators oscillator use an lc tuned tank circuit to control the oscillator frequency, the hartley design can be recognised by its use of a tapped inductor l1 and l2 in fig. This can be tested over the frequency range by carrying out the test in section 5. Miniyig oscillator 3 11 ghz center frequency yig tuned oscillator features low phase noise. Then i had to remove the mounting screws holding the two halves of the cylinder together. Wavetek 907 repair, yig oscillator teardown use arduino for. Pdf design techniques that have been succcessfully used on the development of xband gaas fet yigtuned oscillators are presented. Previously most of microwave circuits were designed based on. 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. Although the common gate fet yig oscillator has be tter. This entry was posted on friday, november 30th, 2018 at 9. They have a stand ard pin configuration, which is almost always the same fig. Applicable to test instrument and electronic counter measures ecm. Jii packard slide 10 tunable oscillators vco and yig tunable oscillators lnp. 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.
Yig filters are used for their high q factors, typically between 100 and 200. With this technology inhand, theyre creating the nextgeneration of test instruments, signal generators, spectroscopy equipment, receivers, jammers, communication systems, and more. Equivalent circuit of an oscillator circuit with a loop coupled yig resonator. This high q characteristics provides very low phase noise and multioctave frequency tuning. The presented oscillator is modeled as a oneport oscillator employing a sige. Internet archive for a project i am currently working on, which i will detail here too eventually, i needed an oscillator capable of covering 8 to 12 ghz. Yig tuned oscillators provide the lowest phase noise for broadband microwave applications. It mentions yig oscillator application note and vendorsmanufacturers of yig oscillator. One particular device of interest is the spin toque oscillator, which is a nanoscale source of microwave power. These different yig oscillator topologies are depicted in the figure1 above. Raditek providing high quality, low cost wireless and microwave products. The adf4107 chip seemed like a good starting point, since its specified for coverage from 1 ghz 7 ghz. Wavetek 907 repair, yig oscillator teardown use arduino. All voltages required by the yig oscillator, except the heater inputs, are supplied by the voltage regulators.
The yig oscillator is, thus, driven by two independent vi converters, one for each coil. Yig based solutions are usually simpler since the yig oscillator can mask many design imperfections. Sep, 2011 hi pete b the 50867500 is a dual yig oscillator that is a sealed microcircuit and is not field repairable. The yig sphere behaves like a resonator with to8000 unloaded q.
Phase locked loop ku band frequency synthesizer based on a. Set the analyzer to 1 ghz center frequency and zero span. This additional material on yig technology just in from james, a semiconductor guy with some rf test experience. Our yig devices and equipment offer the biggest names in the ew, ism, and aerospace industry the lowest phase noise and superior multioctave tuning capability. The synthesizer is based on a yig tuned oscillator yto, a sampling phase. You can follow any responses to this entry through the rss 2. I first had to take off the mounting screws and unfasten the directional coupler see teardown images in my previous post in order to get it out of the rf assembly. Yig oscillator basics yig oscillator app note,vendors. The resonant circuit may be implemented as a yig sphere integrated into the yig oscillator in the same magnetic path as the yig sphere in the oscillator circuitry. Oscillator design using modern nonlinear cae techniques fliohewlett 3 i. I have a couple of avantek yig oscillators, models sf6 and avm both are 2 4 ghz units. A simple approach tyo yig oscil linkedin slideshare.
Jul, 2016 3 yig oscillator connections the connections of a yig oscillator are shown in the circuit. Replacing yigtuned oscillators with silicon by using an ultrawideband pllvco with precision phase control. Agilent technologies 8564ec service manual pdf download. We can provide yig oscillators with 40 dbc second harmonic. If you have your yig oscillator out of the rf deck, reconnected to the power cable and turned on. Jun 06, 1972 the yig resonator structure includes magnet means not shown for producing a magnetic field for the yig resonator, the strength of this magnetic field being variable by an electrical control voltage to tune the yig resonator and thus the oscillator over its operating frequency band, e. Aug 03, 2014 the center of the yig oscillator is protected and shielded by a small piece of copper on the top. 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. The common gate fet oscillator circuit is the most common yig oscillator topology. This yig resonator is influenced by the magnetic field that is generated by the tuning coils. Hp modular products are designed to be cascaded in a 50 microstrip system.
After carefully removing the thin copper cap, we can see the core of the yig oscillator. 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. Microwave synthesizer modules yigtuned filters yig. Yigtuned oscillator design on printed circuit board using surface mount technology. Oscillator designguide reference this manuals provides reference information on the use of the oscillator designguide. In this study, a spin torque oscillator based on the insulating material yttrium iron garnet yig is produced to study the eects of pure spin currents. Sep 18, 2014 dissembling the yig oscillator was a bit more involved. Noise measurements of yigtuned oscillator sources for the. 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. 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. 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. The magnetic field is generated by either a permanent or electromagnet.
Your contact technical and commercial sales, price information, quotations, demotest equipment, consulting. From the picture below, you can clearly see the orthogonal coupling wires around the yig sphere click to see the picture in higher resolution. This resonator is coupled to a lownoise active device to create an oscillator. Pdf a wideband doublepll microwave frequency synthesizer. The intensity of this field determines the frequency that the yig sphere resonates. Low noise yig oscillator based phase locked loop tektronix. Yig oscillator donald benson, ali tatari, amaaduddin, san jose state university fall 2009, ee 172 abstract a resonator based on yig yttrium iron garnet and a bipolar amplifier were implemented, targeting application as an oscillator in the oscillator circuit is the most common yig oscillator topology. Permanent magnet and electromagnetic yigtuned oscillators. They are available in standard solid magnetic shell or in fast sweeping models. The center of the yig oscillator is protected and shielded by a small piece of copper on the top. Description the sampling oscillator tank circuit is adjusted for a tuning voltage of 5. Yigtuned oscillator exclusive authorized distributor more information in our webshop at.
Yig oscillator50867500 schematic for 83752b keysight. As major frequencydetermining component yig single crystals are applied. For the setup of such components magnetically tunable resonators are being deployed. A magnetically tunable microwave spinwave photonic oscillator was designed and modeled. 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. Hi pete b the 50867500 is a dual yig oscillator that is a sealed microcircuit and is not field repairable.
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. Including all types of yig tuned oscillators, yig, yig tuned, ryto, ryad, rydd, analog driver, digital driver. A typical analogdriver control input of 0 to 10 v tunes the oscillator over the full frequency band. Esig o a yig ue 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. Micro lambda wireless offers the largest yig tuned oscillator product line in the market today including permanent magnet and electromagnetic designs covering frequency ranges from 500 mhz to 44 ghz in your choice of narrow or wideband configurations. Yigtuned oscillator design on printed circuit board using surface. The commongate fet oscillator circuit is the most common yig oscillator topology. A yig tuned oscillator consists of a yig sphere mounted on a rod that is positioned inside of a magnetic field. Yig is a ferrite with very high resistivity and a sharp ferrimagnetic resonance. Us7005927b2 low noise yig oscillator based phase locked.
Although the common gate fet yig oscillator has be tter phase noise than most other technologies e. Teledyne defense electronics, llc 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. Yig tuned oscillator 09550630 in order for the mixer to work correctly the input level to the l. A low phase noise yig oscillator based phase locked loop couples an output frequency to a delay line discriminator to provide a phase noise feedback signal to a wideband tuning port of the yig oscillator. A spinwave filter made with an yttriumiron garnet yig film was used simultaneously as a frequency. Experimenting with a stellex yig oscillator overview stellex 6755.
Pdf design theory for broadband yigtuned fet oscillators. All drivers in this series provide input voltage regulators, reverse voltage dataline protection and compensation circuits to improve frequency drift. 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. A delay line in the delay line oscillator may be implemented with either a resonant circuit or a bandpass filter of sufficient bandwidth so that the output frequency and phase noise sidebands. Fabrication of nanoscale spin torque oscillator based on. A wideband doublepll microwave frequency synthesizer. Apr 10, 2011 yig based solutions are usually simpler since the yig oscillator can mask many design imperfections. Wavetek 907 repair, yig oscillator teardown kerry d. Press to turn the spectrum analyzer off and disconnect the line line power cord.
Oscillator frequency ghz 12 teledyne microwave solutions yig to8oscillators exploit the principle of magnetic resonance to generate a clean low phase noise microwave signal over broad tuning ranges. Looking for yig oscillators and dielectric resonators. Tms yig products support radar, communications, ecm, laboratory instrumentation, commercial and military markets and applications. The disadvantages of yig oscillators include high power consumption, large size, and relatively. November 20, 2000 10 ghz phaselocked yig source rev. A sphere made from a single crystal of synthetic yttrium iron garnet acts as a resonator. Hp 8970b option 020 material list main differences for option 020 description part number quantity 2. 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. The studied devices are patterned in a shape of 200 nm wide and 2. Yig filters and oscillators from teledyne microwave solutions. An improved ultralowphase noise tunable yig oscillator operating. Yttrium iron garnet spheres yig spheres serve as magnetically tunable filters and resonators for microwave frequencies.
Noise measurements of yig tuned oscillator sources for the alma lo eric w. Novel coronavirus covid19 visit the health advisories website for the latest information on covid19. Replacing yig tuned oscillators with silicon by using an ultrawideband pllvco with precision phase control. The fracn can be used with a reference oscillator up to 50 mhz, and. Replacing yigtuned oscillators with silicon by using an ultrawideband pll vco with precision phase control. It has interesting magnetic properties which allow it to perform as a tunable microwave filter for example. An improved low noise yig oscillator based phase locked loop of the type having a yig oscillator that produces an output frequency, means for dividing the output frequency to provide a feedback frequency, means for comparing the feedback frequency with a reference frequency to generate a phase difference signal and means for filtering the phase difference signal to. Yig tuned oscillator exclusive authorized distributor more information in our webshop at.