Gigatronics has 30 years of design experience to support your custom yigtuned oscillator and driver applications. With the selector switch in the off position, a large capacitance is switched across the main yig coil when in cw or slow sweep. Solidstate oscillators whose tunable element is a sphere of yttriumirongarnet yig. Replacing yigtuned oscillators with silicon by using an ultrawideband pllvco with precision phase control. The average output power of the yig is dbm in my frequency span of interest. A magnetically tunable microwave spinwave photonic oscillator was designed and modeled. 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. Us7005927b2 low noise yig oscillator based phase locked. Teledyne defense electronics, llc with a 30 year heritage in yig technology, teledyne microwave solutions tms has unsurpassed capabilities as your single source for yig oscillators and offers best in industry low phase noise. With the specs determined, i now have enough information to continue work on my project using this oscillator. Permanent magnet and electromagnetic yigtuned oscillators.
Including all types of yig tuned oscillators, yig, yig tuned, ryto, ryad, rydd, analog driver, digital driver. Yig oscillator basics yig oscillator app note,vendors. Yig tuned oscillators next gen yig by vida products. Microwave synthesizer modules yigtuned filters yig.
Replacing yigtuned oscillators with silicon by using an. The difference in phase noise between the yig and vcobased synthesizers is set by the pll noise. Hp yig oscillator hello, last weekend i bought a secondhand hp yig oscillator. It is quite strange that the amplitude is present and at the correct level but only in some areas of the span range. Tunable, ultralow phase noise yig based optoelectronic. Frequency tuning of the yig resonator is accomplished by varying the currents in electromagnets that are an integral part of the yig oscillator or filter module. Wavetek 907 repair, yig oscillator teardown kerry d. It matches the first pinout in this old spec sheet. Yto is one of those rare and elusive double acronyms weve all heard about in the news lately or not. The common gate fet oscillator circuit is the most common yig oscillator topology. Vida products series of yig tuned oscillators are available in bandtunable and wide tuning version as well as our reference series. The amplified signal is then applied to the input coupling port of the discriminator cavity through a circulator.
In fact i think it is the same oscillator with a different number. 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. Synthesizers, surface mountsmt or connectorized2 to 26 ghz frequency standards. Yig is a ferrite with very high resistivity and a sharp ferrimagnetic resonance. Us20020005762a1 tuning circuit for a yig oscillator. Trying to verify a yig oscillator output amplitude page 1. There has been no work yet on an optimum propagation orientation for tempera. 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. An improved ultralowphase noise tunable yig oscillator. This is nearly a 30 db improvement over conventional yig oscillators, and is derived from the novel approach of.
Even without the controller board, the free running yig oscillator is still useful in applications that do not require frequency stability. Noise measurements of yigtuned oscillator sources for the alma lo eric w. Yig tuned oscillator yto yig tuned filter ytf driver. The oscillator can be tuned from 6 to 12 ghz in steps of 3 mhz, and exhibits a phase noise of 128 dbchz at 10 khz away from the carrier. A spinwave filter made with an yttriumiron garnet yig film was used simultaneously as a. 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. Oscillator design using modern nonlinear cae techniques fliohewlett 3 i. The yig sphere behaves like a resonator with to8000 unloaded q resulting in very good frequency stability.
Hp yig oscillator datasheet, cross reference, circuit and application notes in pdf format. Noise measurements of yigtuned oscillator sources for the. I have put some thought into this, and i plan to do it like this. Request pdf a wide band, low phase noise, differential yig tuned oscillator yig tuned oscillators yto offer an unbeatable combination of. The difference in phase noise between the yig and vcobased synthesizers is set by the pll noise floor and free running oscillator noise curves and is indicated as a hatched area in fig. It will have the pin out information as to how to power up the yig. From the picture below, you can clearly see the orthogonal coupling wires around the yig sphere click to see the picture in higher resolution. The yig ball, which sits at the tip of a short ceramic rod, is positioned in the middle of a coupling coil u bolt. K3rbq, that is a yig oscillator from a 83522a rf plug in. It mentions yig oscillator application note and vendorsmanufacturers of yig oscillator. Yig filters are used for their high q factors, typically between 100 and 200. Recent listings manufacturer directory get instant insight into any electronic component. New listing hp agilent 105a quartz oscillator, good working, free shipping. These units feature vidas patented technology that provides low power consumption and outstanding phase.
Yttrium iron garnet spheres yig spheres serve as magnetically tunable filters and resonators for microwave frequencies. The combination of the high q and broadband tuning range of the. It has interesting magnetic properties which allow it to perform as a tunable microwave filter for example. Yig oscillators with bestinindustry low phase noise. Yig is a very interesting microwave material with properties that can be substantially modified by the application of a strong magnetic field.
Predictably, reducing the pll noise floor and simultaneously widening the loop filter bandwidth minimizes the difference, thus, making a vcobased. High performance, with unloaded qs, demands a resonator that is a highly polished sphere or ellipsoid made from a single crystal of yig. Nevertheless, the vco phasenoise curve is still well above the yig counterpart. 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. Looking for data i found your request but no usefull data. A sphere made from a single crystal of synthetic yttrium iron garnet acts as a resonator. Hp modular products are designed to be cascaded in a 50 microstrip system.
Oscillator frequency ghz 12 teledyne microwave solutionsyig to8oscillators exploit the principle of magnetic resonance to generate a clean low phase noise microwave signal over broad tuning ranges. Yigtuned oscillators provide the lowest phase noise for broadband microwave applications. 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. Jii packard slide 10 tunable oscillators vco and yig tunable oscillators lnp. 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. 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. This decreases the residual fm of the output signal. Yig oscillators with bestinindustry low phase noise source. 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. 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. Core element is a small yig sphere, placed in a magnetic field.
This additional material on yig technology just in from james, a semiconductor guy with some rf test experience. Yto yig tuned oscillator and yig yttriumirongarnet. The oscillation frequency can be controlled using a constant current source, such as a dc power supply set to the current limiting mode. This high q characteristics provides very low phase noise and multioctave frequency tuning. This resonator is coupled to a lownoise active device to create an oscillator.
Synthesized phase lock oscillator 2 to 26 ghz crystal oscillators. Bradley nrao, charlottesville, va 22903 24 august 2000 in this memo, we present measurements of the noise of. 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. First a 3db attenuator, just to make the rest look more like 50r. After carefully removing the thin copper cap, we can see the core of the yig oscillator. Pm noise of a 40 ghz airdielectric cavity oscillator.
Although the common gate fet yig oscillator has be tter phase noise than most other technologies e. Raditek providing high quality, low cost wireless and microwave products. The center of the yig oscillator is protected and shielded by a small piece of copper on the top. Micro lambda wireless offers the largest yigtuned oscillator product line in the. My yig oscillator is a hp 50867067, it looks exactly like yours and covers the same band. In the case of a tuning circuit for a yig oscillator, wherein the output frequency of the yig oscillator which is reduced by a frequency divider or mixer is compared in a phase detector with a lower reference frequency and via a loop filter the output voltage of the phase detector feeds the aircored coil of the yig oscillator serving for fine tuning, the main coil of the yig oscillator is. Top results 6 part ecad model manufacturer description datasheet download buy part. You can get a service manual from manuals plus for a few bucks. This yig resonator is influenced by the magnetic field that is generated by the tuning coils. A wide band, low phase noise, differential yig tuned.
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