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Topic: Yig


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  Tuning circuit for a YIG oscillator - Patent 6614315
YIG oscillators are used as oscillators which are capable of being tuned over a wide frequency range of, for example, 4 to 12 GHz and which are synchronized via an appropriate phase-control loop to a lower reference frequency which, for example, is prespecified by a synthesizer.
In the case of a known tuning circuit for a YIG oscillator the main coil is fed with a pretuning current which is generated from the desired output frequency of the YIG oscillator which is digitally prespecified in a processor via a digital/analogue converter and an appropriately controllable current source.
Setting of the desired output frequency f of the YIG oscillator is effected in a processor 10, via which the frequency divider 2 or the frequency mixer for reducing the output frequency and the reference oscillator 4 are also appropriately controlled, as indicated by the linkages.
www.freepatentsonline.com /6614315.html   (1946 words)

  
 YIG tuned band reject filter for 2-18 GHz with full one-quarter wavelength RF coupling loops - Patent 5221912
All YIG notch filters are basically comprised of a transmission line structure which carries the RF signal to be applied to the receiver input and several YIG spheres which are coupled to the transmission line by RF coupling loops at points along the length.
The YIG notch filter according to the teachings of the invention is aligned to match all center frequencies of the YIG spheres as closely as possible by rotating all the spheres in their cavities until best performance is achieved.
YIG spheres operate by precession of their magnetic dipoles under the influence of the RF magnetic field created by the RF coupling loops in response to the voltage fluctuations of the RF signals to be filtered.
www.freepatentsonline.com /5221912.html   (11115 words)

  
 Low noise yig oscillator based phase locked loop patent invention
The YIG oscillator, which is central to the design, is an electronic device that generates an output signal with a frequency proportional to the strength of a magnetic field impressed upon a YIG sphere.
YIG oscillators have the desirable attributes of wide tuning range on the order of several octaves, operation at microwave frequencies, linear tuning response with respect to the coil currents, and often good phase noise performance.
As the oscillator is tuned, the resonant frequency of the YIG delay elements tunes with it to produce the desired delayed signal to the delay path port of the mixer 26.
www.freshpatents.com /Low-noise-yig-oscillator-based-phase-locked-loop-dt20051215ptan20050275479.php   (2331 words)

  
 Great Old One compendium - Wikipedia, the free encyclopedia
Yig (the Father of Serpents) is a deity that appears as a serpent man or as a giant snake.
Yig is the subject of a song by the shock rock band GWAR entitled "Horror of Yig", which appears on their album Scumdogs of the Universe.
Yig was once (and may still) be worshipped by the Ssethregorean Empire, a group dominated by various lizard and snake-like beings.
en.wikipedia.org /wiki/Yig   (935 words)

  
 YIG Technology - Microwave Encyclopedia - Microwaves101.com
YIG is actually a synthetic form of garnet.
YIG is a ferrite with very high resistivity and a sharp ferrimagnetic resonance.
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.
www.microwaves101.com /encyclopedia/YIG.cfm   (312 words)

  
 Yttrium-Iron Garnet (YIG)   (Site not responding. Last check: 2007-10-21)
Yttrium iron garnet (YIG) is a ferrimagnetic material which is widely used in various microwave and optical-communication devices and other applications - mainly due to its suitable magnetic and magneto-optical properties.
YIG is also transparent to wavelengths exceeding 600 nm, which makes it a good candidate for atom-optical purposes, in particular, for realizing new kinds of atom traps.
GGG is an appropriate substrate material for YIG since the lattice constant and thermal expansion coefficients match with those of YIG.
www.tkk.fi /Units/AES/projects/prlaser/yig.htm   (290 words)

  
 [No title]
A YIG oscillator is a microwave oscillator who’s frequency is determined and controlled by a uniform magnetic field intensity.
YIG spheres are predominant, because they have a uniform magnetic field on the inside upon application if a uniform external field so that all unpaired electrons see the same intensity and therefore will resonate at the same frequency.
So that the YIG oscillates at some desired frequency, an electromagnet is used to apply a constant and uniform magnetic field to the sphere.
pw1.netcom.com /~dstraigh/yig.html   (853 words)

  
 Cost-Effective VCOs Replace Power-Hungry YIGs
In addition, YIG oscillators are sensitive to thermal drift, vibration, lighting, electromagnetic interference (EMI), microphonics, phase hits, and frequency modulation, all of which have a detrimental effect in designing modern communication systems.
YIG oscillators are also limited in tuning speed in the range of millisecond frequency switching speed.
YIG oscillators require a significant amount of power (typically 200 mA at 12 V or more) in order to power the heater that stabilizes the internal temperature of the YIG sphere and its supporting electronics.
www.mwrf.com /Articles/ArticleID/12317/12317.html   (2336 words)

  
 ChaosCurrent.com: Great Yig
I used this as a rebirth ritual, being reborn as a child of Shub Niggurath and as such an initiate of the mythos.
In this vision Yig provided me a vial of venom to be ingested during a certain ritual.
Considering that the ingestion of Lilith's menstrual blood was the consummation of her symbolic role as mother, I took this as acknowledgment of Yig's role as symbolic father of the working.
chaoscurrent.com /notebook/greatyig.html   (640 words)

  
 Ultra Low Phase Noise YIG Tuned Oscillator
YIG oscillators exploit the principle of magnetic resonance to generate a clean low phase noise microwave signal over broad tuning ranges.
A single crystal YIG sphere will experience magnetic resonance and behave similar to a tank circuit when the sphere is positioned in the air gap of a simple electromagnet.
YIG oscillators typically require a main coil for coarse tuning and a FM coil for phase locking.
www.teledynemicrowave.com /Products/Oscillators/Ultra_Low_Phase_Noise_YIG_Oscillators.aspx   (508 words)

  
 Shoggoth.net: Octobernomicon, Oct 13: Chosen of Yig   (Site not responding. Last check: 2007-10-21)
Yig reserves this punishment for normal humans, those without any connection to his worship, or without the tainted blood of the Serpent People in their veins.
The exact crimes that warrant such a punishment are unknown, though those who kill many snakes, or harm Yig’s servants and worshippers are sure to face the Snake-God’s wrath.
Sometimes, the curse will not be visited on those who have angered Yig, but their children while they are still in the womb.
www.shoggoth.net /article.php3?story_id=872   (573 words)

  
 [No title]   (Site not responding. Last check: 2007-10-21)
To calibrate the YIG power levels in the antenna, there are two steps: 1.
Connect the YIG output to a power meter or spectrum analyzer (and put the marker on the output frequency).
This can be done by piping the YIG signal to a power meter, then piping the analog output of the power meter to the PMAC ADC on the rack (normally used for receiver total power).
cfa-www.harvard.edu /~thunter/srlab/thunter/manuals/yigcal.txt   (261 words)

  
 Starry Wisdom #3: The Children of Yig   (Site not responding. Last check: 2007-10-21)
The Great Old One, Yig, is said to be the Father of all Serpents, and so the serpent people worshiped him from the first.
Yig usually appears as a serpentine human, but in some forms he is a huge snake.
According to legends, Yig is imprisoned in the Pit of Ngoth, beneath K'n-yan.
www.chaosium.com /chaosium/starry-wisdom/sw3-racesp.shtml   (1997 words)

  
 Unicorn No Senshi Places--Yig and Beyond
Fuyutsuki planted Yig untold millenia ago to serve as a boundary marker for the region of Shadow claimed by Amber.
Yig often seems different every time one visits it; it remains uncertain whether one is simply seeing different Shadows of Yig or the true Yig changes.
Yig is always a tree with a trunk a good half mile across that rises so high into the sky you cannot see its top.
www.thekeep.org /~wombat/AmberRPG/NineRiders/YigAndBeyond.html   (810 words)

  
 PREL - Pacific Area Language Materials
Iy be sar kkoeloah choeg ngoa sa mmaengdoh yig kowe re ppaaechigchig.
Iy hallayuur yig kowe re ppaaechigchig boa be hal seew choeg sossor ngoa re sa ssog loah lal mele yeway.
Be yoh lea ho be soer idel sooelboes moa sooelboes moa uwooal yig lae?
www.prel.org /palm/Ulithian/yig-we.asp   (485 words)

  
 Wisconsin Youth in Government - YMCA Sponsored Program for Youth
A big change this year is that we lost our former state director, Molly, and I would like to say from all of us that she will greatly missed and that we are thankful for all of the positive things she brought to the program.
The number of YIG participants is down, and we need delegates to work hard to recruit more kids into their program on a local level.
The foremost goal of YIG is to pass the tradition of democracy down from generation to generation, and without delegates, we can’t achieve that central goal.
www.wyig.org   (481 words)

  
 SiGe Silences YIG Oscillator Phase Noise
Yttrium-iron-garnet (YIG) oscillators are usually the source of choice for designs requiring low phase noise, wide modulation bandwidths, and moderate tuning speed, and many refinements have been achieved in packaging the technology in recent years, but no true advances in lowering the phase noise.
As with the other SiGe YIG oscillators, the MLXS-Extreme sources are designed to remain stable with temperature, with no more than 20 MHz drift over the operating temperature range of 0 to +65°C (Fig.
The new low-noise YIG oscillators are ideal for a wide range of commercial and military applications, including communications receivers, test equipment, electronic countermeasures (ECM) systems, and electronic-warfare (EW) systems.
www.mwrf.com /Articles/ArticleID/11902/11902.html   (1084 words)

  
 Grace Media Services (GMS) Press Rooms
YiG Showcase™ (Youth in Gospel™) is an initiative of Grace Media Network to mentor and develop teen and college student leaders to pursue kingdom excellence in media.
YiG was formed in 1992 to provide a full circle of mentorship opportunities that includes: creating platforms to showcase oratory skills and talent; explore careers in mass media and photo journalism; acquire media technology training; foster community volunteerism; interact with credible, positive personalities in media and industry who pose positive images.
YiG reflects today the quality, stability and strength of character and achievement in our next generation of tomorrow's leaders in media.
www.gmnetwork.cc /pages/YIG.html   (627 words)

  
 Gwar Horror Of Yig lyrics
Where Yig doth tread no man tread tomorrow.
Yig now in coming, Yig now is here.
Yig comes and you die, you all die.
www.lyricsdomain.com /7/gwar/horror_of_yig.html   (174 words)

  
 LHS Youth-in-Government
The YMCA Youth In Government program provides leadership development, civic education, and values conferences for high school and middle school students at public and private schools across the state.
YIG Board of Directors will meet on the third Monday of each month.
General YIG meetings will meet on the fourth Monday of each month.
www.pickens.k12.sc.us /liberty.hs/archive/yig_04-05.htm   (117 words)

  
 Endwave YIG Oscillators Provide Superior Phase Noise
Endwave Defense Systems has announced the release of their YIG (Yttrium Iron Garnet) frequency sources with high spectral purity needed for FMCW radar, microwave point-to-point radio and instrumentation applications.
Endwave's latest YIGS are available in 2 configurations, Micro-YIG and Mini-YIG, to address a range of packaging and operating parameters.
These YIG Oscillators can be operated in an unlocked free-running mode, providing phase noise better than -105 dBc/Hz at 10 kHz offset, and -128 dBc/Hz at 100 kHz offset.
rfdesign.com /microwave_millimeter_tech/endwave_yig_oscillators   (328 words)

  
 YIG 27 july
On July 27 th, the YIG met for the second time at Brennan's Restaurant and, after a charming cocktail in the garden, the extraordinary presence of Lisa Whitaker delighted the guests speaking about her life and work.
Lisa Whitaker, Sovietologist and CEO of The Living Bank, made an outline of her life in Germany before the fall of the Berlin Wall and her no-profit activity at medical organizations, above all in Saint Petersburg.
The speech was really appreciated and YIG looks forward meeting you all again.
www.iacctexas.com /newsevents/YIG27july.html   (361 words)

  
 YIG --Patronage
YIG 2006 stands under the patronage of the minister for economy, SME and energy industry in North-Rhine-Westphalia, Ms.
Silvia Bretschneider, was patron of the YIG workshop at ITB Berlin.
Silvia Bretschneider gave the baton for the next YIG to the representative of the state North Rhine-Westphalia Dr. Robert Datzer, Chairman North Rhine-Westphalia Tourism e.V. Eine Initiative der Messe Berlin
www.youth-incoming-germany.de /Patronage.23.0.html?&L=2   (234 words)

  
 Giga-tronics Incorporated: Product Overview
Giga-tronics YIG oscillators exhibit low noise performance covering wide operating bands in the 2 to 18 GHz range.
While we continue to offer YIG oscillators in the industry standard Wideband MicroCube™ product covering 2 to 18 GHz, we are also offering our new Low Profile YIG oscillators (LPO series) covering 2 to 10 GHz.
If the yig oscillator product you need is not listed, please contact us and give us your requirements.
www.gigatronics.com /products/overview.php?cat=yig   (207 words)

  
 Endwave Corporation - rf, microwave frequency synthesizers, yig, vco
Our capability includes both YIG and VCO based designs to provide system designers a cost vs. performance option.
These YIG synthesizers are an ideal replacement for PLDROs and offer optimal spectral purity with broad tuning ability.
Standard frequencies range from C-Band to Ku-Band, but higher frequencies into the millimeter-wave range can be achieved by cascading an Endwave multiplier at the output of the synthesizer.
www.endwave.com /products.cfm?prod=syn&mtype=y   (175 words)

  
 Teledyne Ferretec Yig Oscillators
Teledyne Microwave YIG oscillators are computer designed for flat power output over multi-octave tuning ranges.
These devices are available for MIL-SPEC applications and provide excellent performance over temperature ranges exceeding MIL-STD of -54 to +85°C. They are fully supported by extensive in-house MIC capabilities to ensure reliable performance.
For additional information please review Teledyne Microwaves YIG Oscillator Catalog.
www.teledynewireless.com /Products/Yig/YIG_Oscillators.aspx   (120 words)

  
 XL Microwave Gunn & YIG Oscillator Controllers
The XL Model 810 YIG Phase Lock Module contains all the necessary circuitry to drive a standard YIG Oscillator and phase lock it to a harmonic of a frequency reference (+/- offset) with high spectral purity and ease of use.
For common YIG oscillators this tunes the frequency +/- 45 MHz.
See also the Model 1810 Sweeping Current Supply for YIG oscillator testing.
www.xlmicrowave.com /gunn_yig.htm   (957 words)

  
 Endwave Corporation - rf, microwave, millimeter-wave, yig oscillator, frequency sources, DRO, VCO
Endwave’s oscillators are the unanimous choice of synthesizer designers and system engineers as the frequency sources used to drive mixing, frequency multiplication, or transmitter stages in their equipment.
Endwave’s YIG (Yttrium Iron Garnet) technology provides a frequency source with exceptionally low phase noise and high tuning bandwidth with the spectral purity needed for high data-rate communications and instrumentation applications – something often not possible with a single DRO or VCO-based oscillator.
Endwave free-running oscillators are available in two base configurations, Micro-YIG and Mini-YIG, to address a range of packaging, performance, and budget constraints.
www.endwave.com /products.cfm?prod=osc&mtype=y   (149 words)

  
 Start-up exploits YIG technology for mil, aerospace apps
Santa Rosa, Calif. -- A new microwave component and sub-system company, VIDA Products, Inc., has been formed to concentrate on military and commercial applications for high-Q, broadly tunable filters, oscillators, and frequency synthesizers.
The company's products will use YIG technology with new developments recently introduced by VIDA such as extended temperature range performance, insensitivity to vibration, very low drive power requirements, and the use of thin film YIG (TFY) resonators.
Key applications include satellite and terrestrial communication systems and ELINT and ECM equipment where broad tunability, high data rate, and/or operationally secure performance are critical requirements.
rfdesign.com /news/radio_startup_exploits_yig   (238 words)

  
 Ferretec YIG
Teledyne’s YIG Products supplies both closed- and open-loop YIG filters, YIG Oscillators and YIG-based integrated receiver front-ends/tuners.
Analog and digital drivers are available for all Ferretec YIG products.
All of Teledyne's YIG products combine advanced technology and state-of-the-art performance with sophisticated manufacturing techniques to ensure consistently high quality.
www.teledynewireless.com /Products/Yig/Yig.aspx   (124 words)

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