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Topic: HBT


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In the News (Sat 19 Dec 09)

  
  About Kopin HBT
Kopin HBTs generate clearer high-frequency signals, consume less power, and thus enable longer talk time than other types of transistors.
Kopin was the first company to commercialize volume production of GaAs HBT wafers in 1996, and has led the market in innovation and volume production ever since.
Kopin has shipped more than 600,000 HBT wafers, generating several hundred million dollars of revenue for Kopin and helping create billions of dollars of revenue for its power amplifier customers.
www.kopin.com /about-kopin-hbt   (181 words)

  
  HBT Sleuth: Breathe E-Z Systems, Inc. offers non-invasive solutions for all your gas detection needs, including ...
The HBT Sleuth hydrogen breath test is a precision instrument for detecting lactose intolerance, bacterial overgrowth, glucose intolerance, and fructose intolerance.
This measure of H2 in exhaled breath is used to detect abnormal breakdown or malabsorption of carbohydrates in the intestine.
The HBT Sleuth hydrogen monitor is used to perform a lactose intolerance breath test.
www.testbreath.com /products/hbt.htm   (893 words)

  
 HBT High Speed Bit Error Rate Tester
HBT operates at data rates from 32 kbps to 2.048 Mbps, including 1.544 Mbps, and supporting all n x 56 kbps and n x 64 kbps data rates.
HBT compares the received pattern with the transmitted pattern and presents the result on an LCD display, counting bit errors, sync loss number, block errors and error-seconds.
HBT also features an INJECT ERROR push button which enables the user to check the tester and the line by introducing errors in the transmitted data stream.
www.pulsewan.com /rad/hbt.htm   (240 words)

  
 Low noise-high linearity HEMT-HBT composite - Patent 5838031
The emitter electrode of the HBT 38, connected to the terminal 46, defines the output of the device to form a low noise-high linearity HEMT common-gate HBT common-collector 3-terminal composite device whereby the collector of the HBT 38 is the third terminal and is coupled to ground to form a useful 2-port amplifier.
A biasing resistor R.sub.bias 104 is connected between the base of the HBT Q.sub.2 100 and ground, while an emitter resistor R.sub.ee 106 is connected between the emitter terminal of the HBT Q.sub.2 100 and ground.
A biasing resistor R.sub.bias 124 is connected between the base of the HBT Q.sub.2 122 and ground, while an emitter resistor R.sub.ee 126 is connected between the emitter terminal of the HBT Q.sub.2 122 and ground.
www.freepatentsonline.com /5838031.html   (5877 words)

  
 HBT Acquires Second Manufacturing Facility
HBT has developed patented technology, which converts hydrocarbons into clean burning hydrogen for use in manufacturing, fuel cells and fuels for trucks and busses.
HBT will be delivering a few hundred systems this year into this important growth market.
Hydrogen Burner Technology (HBT) manufacturers on-site hydrogen generators for industrial markets and stationary and transportation fuel processors for supplying hydrogen to the fuel cell market.
www.prnewswire.com /cgi-bin/stories.pl?ACCT=104&STORY=/www/story/06-13-2000/0001242637&EDATE=   (317 words)

  
 USMC WW II HBT UNIFORM
Buttons on the HBT shirts had U.S. Marine Corps embossed in a circular pattern, as in the photo, originally bronze, but changed to flened steel in August 1942 to save on scarce materials.
It was based on the Army HBT field caps, with a short visor and pleats around the crown.
When the 1944 pattern HBT uniform was released, a new field cap was also issued with a longer brim and higher crown.
www.olive-drab.com /od_soldiers_clothing_combat_ww2_usmc_hbt.php   (636 words)

  
 US Uniforms - HBT Fatigue Uniforms
Introduced in the Fall of 1938 to replace the denim fatigue uniform, the HBT uniform became one of the most common and popular uniforms in the US Army inventory.
All HBT's are made in our own factory in Columbia Ky. The 13-star buttons are made by the Scovil Co. in Georgia.
Second pattern HBT jacket used by the Army in W.W.II.
www.atthefront.com /us_uni_hbt.htm   (913 words)

  
 HBT Communications   (Site not responding. Last check: )
HBT Communications is looking for a Microsoft Certified Systems Engineer (MCSE) to join it's team of service professionals.
HBT Communications is a progressive, innovative telecommunications and IT company based in Coventry in the heart of the UK.
HBT Communications is a solutions provider offering broadband services and enhanced voice and data communications services to small and medium-sized businesses.
www.hbtelecom.co.uk /careers.htm   (554 words)

  
 Description datasheet search, HBT datasheet, HBT datasheets, HBT data sheets ::: ALLDATASHEET :::
Description datasheet search, HBT datasheet, HBT datasheets, HBT data sheets ::: ALLDATASHEET :::
Semiconductors, integrated circuits, diodes, triacs, and other semiconductors informations
HBT Amplifier HBT InGaP HBT Power HBT Watt HBT High HBT GHz HBT Linearity
category.alldatasheet.com /index.jsp?semiconductor=HBT   (78 words)

  
 Pion HBT results from E895
The strength of this oscillation characterizes the tilt of the major axis of the spatial emission ellipsoid away from the direction of the beam.
A measurement of the azimuthal dependence of the HBT cross terms Rol2 and Rsl2 thus probes directly the physical origin of directed pion flow.
The beam energy evolution of the correlations' dependence on m_T, centrality, and emission angle with respect to the reaction plane are discussed.
www.physics.ohio-state.edu /~lisa/E895HBT   (947 words)

  
 EPRI: Strategic Implications of Distributed Energy Resources to Discos: Quantification of Benefits
Energy issues, particularly cost, reliability, and power quality, are important to HBT firms, but they are not a significant factor in the decision-making process for locating sites for research or manufacturing facilities.
However, HBT firms are positive on the attributes that energy parks can offer them, particularly if total cost of service is not significantly increased.
HBT firms are interested in the idea of an energy park, but generally only if cost is the same as conventional service and reliability is higher.
www.epri.com /OrderableitemDesc.asp?product_id=000000000001004995&targetnid=262184&value=03T101.0&marketnid=262168&oitype=5&searchdate=3/22/2004   (379 words)

  
 Improvement in InGaP/GaAs HBT for 24 V to 28 V linear PA operation
Consequently, GaAs HBT with the emitter made of indium gallium phosphide (InGaP) is widely used in handset PAs, and is gaining acceptance in infra-structure amplifier designs.
In a typical lineup of power amplifiers, the power stage is often a class B circuit for the best efficiency, and the driver stage a class AB for a trade-off of linearity and efficiency, and the pre-driver stage may be a class A amplifier.
Working with InGaP/GaAs HBT, the goal is to operate the driver and pre-driver stages in near-class B operation for better efficiency, while achieving a superior linearity at the back-off power level.
www.rfdesign.com /vlf_to_uhf/active_components/radio_improved_ingapgaas_hbt   (627 words)

  
 Improvement in InGaP/GaAs HBT for 24 V to 28 V linear PA operation
Consequently, GaAs HBT with the emitter made of indium gallium phosphide (InGaP) is widely used in handset PAs, and is gaining acceptance in infra-structure amplifier designs.
In a typical lineup of power amplifiers, the power stage is often a class B circuit for the best efficiency, and the driver stage a class AB for a trade-off of linearity and efficiency, and the pre-driver stage may be a class A amplifier.
Working with InGaP/GaAs HBT, the goal is to operate the driver and pre-driver stages in near-class B operation for better efficiency, while achieving a superior linearity at the back-off power level.
rfdesign.com /vlf_to_uhf/active_components/radio_improved_ingapgaas_hbt   (604 words)

  
 Monolithically fabricated hbt amplification stage with current limiting fet patent invention   (Site not responding. Last check: )
The smaller HBTs, also referred to as cells, may be identical to each other but may also differ to the other cells in the HBT depending on design considerations.
Generally, HBTs are preferred over bipolar junction transistors (BJTs) because of the higher gain, higher breakdown voltage, and higher saturation velocity of the HBT.
GaAs HBTs are preferred over silicon, despite their greater cost, because the high electron mobility in GaAs enables GaAs HBTs to operate at the gigahertz frequencies of our present wireless systems.
www.freshpatents.com /Monolithically-fabricated-hbt-amplification-stage-with-current-limiting-fet-dt20050825ptan20050184808.php   (970 words)

  
 GaAs and InP-based Heterostructure Bipolar Transistors
Application of the analytic HBT model extraction technique to newly developed expressions in order to evaluate which factors are limiting the device performance.
Evaluation of HBT low frequency noise by direct measurement of the noise spectra and by the indirect technique where the output noise is measured under a series of different base terminations.
Verification of absence of diffusion 1/f noise in the tested devices and confirmation that the HBTs of the study were not at the fundamental noise limits.
www.eecs.umich.edu /dp-group/developments/HBTs.html   (1120 words)

  
 WW II HBT FIELD UNIFORM
The HBT uniform was originally intended to be only for work duty but quickly became the standard dress for all types of informal temperate weather activity, including combat, replacing the cotton khaki uniform.
In 1942 another pattern HBT jacket was introduced (PQD 45B), featuring square cut cargo pockets, side pleats, and a plain hem with only one button near the bottom.
For each of the HBT jackets there is a corresponding pattern of the "Trousers, Herringbone Twill".
www.olive-drab.com /od_soldiers_clothing_ww2_hbt_2pc.php   (604 words)

  
 Embedded.com - Using GaAs pHEMT/HBT devices in your wireless embedded and mobile designs   (Site not responding. Last check: )
The HBT and pHEMT device structures are decoupled from one another, enabling independent optimization and development of each device to achieve the required performance without any compromises.
The HBT and pHEMT only share a highly doped n-type GaAs layer that serves as the cap for pHEMT and as the subcollector for HBT.
The thickness of this layer should be chosen to achieve the required HBT collector resistance while maintaining acceptable pHEMT recess topography to allow pHEMT gate processing and formation.
www.embedded.com /rss/showArticle.jhtml?articleID=196701001&cid=RSSfeed_embedded_news   (1393 words)

  
 STAR: Physics results   (Site not responding. Last check: )
The energy dependence of HBT parameters for central Au+Au (Pb+Pb) collisions at midrapidity and pT = 0.17 GeV/c.
Hanbury-Brown Twiss (HBT) interferometry of two-pion correlations allows one to study the source size at thermal freeze-out, the point at which particles no longer interact.
However, first HBT studies by STAR showed that the extracted source sizes are comparable to measurements at lower energies.
www.star.bnl.gov /central/physics/results/result.php?res=3&cat=hbt   (148 words)

  
 Improvement in InGaP/GaAs HBT for 24 V to 28 V linear PA operation
Memory effect was checked on the single-building block HBT by varying the two-tone frequency spacing from 1 MHz to 120 MHz.
A 2BB size HBT with the dynamic bias circuit was evaluated over temperature with its result shown in Figure 5.
The HBT hybrid amplifier was driven to P1dB level at room temperature for more than 500 hours, and no change can be noticed.
www.rfdesign.com /vlf_to_uhf/active_components/radio_improved_ingapgaas_hbt/index2.html   (871 words)

  
 9-11 Memorial Planting
In remembrance of California's lost on 9-11-2001 HBT contributed tree planting with their families at their homes, churches, and neighborhoods.
On 6-22-2002, twenty-nine families came to North Hollywood Park to plant for all the families where HBT has built a memorial area.
HBT continues to plant with community and neighborhoods, one tree for each person lost on 9-11-2001 until all are remembered.
www.hbteam.org /memorial_planting/9-11_planting.htm   (147 words)

  
 German HBT Uniforms
Made from reed green HBT fabric, the jacket was patterned after the Tropical tunic worn by the DAK, except that the collar was designed to be worn closed rather than open.
These were issued throughout the Russian, Italian and west European theaters of operation to Heer and Waffen SS units.
As for Himmler's guys, there were prewar gray and earth brown cotton tunics that saw use during the war, and in 1944 the HBT camouflage uniform (AKA"44 dot") was issued.
www.atthefront.com /g_uni_hbt.htm   (640 words)

  
 OhioLINK ETD: CHIRALA, MOHAN
Of the scores of disparate devices that have been investigated, Heterojunction Bipolar Transistors (HBTs) have carved a niche for themselves owing to their high speeds and greater power handling capabilities.
In this work, the design of an innovative HBT with a collector-up topology, i.e., with the collector situated on top of the device and emitter on the substrate side, is carried out and optimized for maximizing the high frequency performance.
These parameters, along with the mobility models (that were derived by investigating published results), were made compatible to an emitter-up HBT and incorporated into a two dimensional, physically-based, numerical simulator called ATLAS by Silvaco Inc. The motive was to verify the correctness of the material parameters and models derived.
www.ohiolink.edu /etd/view.cgi?ucin1027960962   (487 words)

  
 BD - Diagnostic Systems: HBT Bilayer Medium (for G. vaginalis)
HBT (Human Blood Tween) Bilayer Medium is a selective and differential medium used in the primary isolation and presumptive identification of Gardnerella vaginalis from clinical specimens.
HBT Bilayer Medium was described in 1982 by Totten et al.
vaginalis was better on HBT Bilayer Medium than on a single layer human blood medium because the characteristic betahemolytic reaction used in differentiating the bacterium was more apparent.
www.bd.com /ds/productCenter/297884.asp   (673 words)

  
 True HBT
HBT technology is an indispensable part to provide high performance integrated circuit power amplifiers for both handsets and infrastructure.
Extremely high linearity, low voltage operation, and high efficiency, along with low cost small size, with the simplicity of single polarity power supplies are among HBT’s many virtues.
These attributes are absolutely essential for hand held wireless devices, and they are very hard to achieve with the older technologies such as Si bipolar or GaAs MESFET.
www.knowledge-on.com /hbt/eng/technology/01.asp   (306 words)

  
 HBT and Gaz de France Sign Strategic Agreement
The use of natural gas to generate hydrogen on-site for powering fuel cell vehicles is an adjunct of this relationship.
Hydrogen Burner Technology, Inc. (HBT) manufactures on-site hydrogen generators for industrial markets and stationary and transportation hydrogen processors for the fuel cell market.
For more information on hydrogen generators or fuel cell technology, call HBT at 310/900-0400; fax them at 310/900-0410; write 19300 Susana Road, Rancho Dominguez, CA 90221 or access them online at http://www.hydrogenburner.com; e-mail: inquire@hydrogenburner.com Gaz de France serves more than 11-million customers with natural gas and has operations in 20 countries.
www.prnewswire.com /cgi-bin/stories.pl?ACCT=104&STORY=/www/story/07-26-2000/0001276142&EDATE=   (428 words)

  
 UW NPL 1996 Sect 4.5 Multiparticle HBT for single event physics?
For single event physics it is of interest to extract an HBT radius for each event with the best possible statistical accuracy.
This suggests that at some large pion multiplicity it may become statistically advantageous to perform single-event HBT analysis using three particles rather than two.
at the correlation half-maximum is 1.59 and that the 3-particle HBT enhancement at half-maximum is twice as large as the 2-particle HBT enhancement.
www.npl.washington.edu /npl/ar96/ch4_5.html   (333 words)

  
 Non-cell-autonomous rescue of anaphase-promoting complex function revealed by mosaic analysis of HOBBIT, an Arabidopsis ...
The Arabidopsis HOBBIT (HBT) gene encodes a homolog of the CDC27
HBT transgene in a background homozygous for the strong mutant
HBT reduction in roots leads to a decrease in endoreduplication,
www.pnas.org /cgi/content/full/103/35/13250   (4564 words)

  
 HBT apartment rent lease sale rental hire-Chao Co., Ltd-VIETNAM REAL ESTATE, hochiminh city
HBT apartment rent lease sale rental hire-Chao Co., Ltd-VIETNAM REAL ESTATE, hochiminh city
HBT Apartment, district 1, 10 minutes to the downtown.
Brand-new Apartment Building in the heart of the city center, walking distance to all types of restaurants, bars, clubs, shopping center, very good quality, international management, elevator, loby, outdoor yard and garden, quiet area, etc,...
www.chaocom.com /apartments/d1/hbt.htm   (251 words)

  
 TAPPI Website - Reactivity and Mechanism of Laccase Mediators for Pulp Delignification, 1997 Biological Sciences ...
We found significant differences in reactivity between various fungal laccases for pulp delignification in the presence of the mediators ABTS and HBT.
A comparison of T. versicolor lactase with various mediators, including ABTS, HBT, remazol blue, nitroso-naphthols and phenothiazines, has shown that HBT gave the most extensive delignification, but deactivated the enzyme and therefore required a higher enzyme dosage.
It is proposed that the dication of ABTS and the l-oxide radical of HBT, with redox potentials in the 0.8 to 0.9 V range, are required for pulp delignification.
www.tappi.org /s_tappi/doc_bookstore.asp?CID=5315&DID=511735&css=print   (242 words)

  
 Agilent | Agilent HBT Model
The Agilent HBT Model is a nonlinear circuit simulation model designed explicitly for III-V (GaAs and InP) HBTs.
The Agilent HBT Model model significantly improves the simulation accuracy and convergence for high-frequency IC designs and helps reduce the number of design cycles.
Masaya Iwamoto and David Root, Agilent Technologies, Agilent HBT: A Large-Signal Model for GaAs and InP HBTs, 60-slide technical presentation.
eesof.tm.agilent.com /products/ads2003c_hbt_model.html   (444 words)

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