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Topic: Low-noise block converter

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Patent 5263182: Low-noise block converter for a satellite broadcasting system A low noise block converter as claimed in claim 9, wherein said mixer the signal provided by said power combiner with the signal from said first filter means to generate a signal based on the difference therebetween. A low noise block converter as claimed in claim 11, wherein said second amplifier means amplifies the output of said fourth filter means into a signal of intermediate frequency band. A low noise block converter as claimed in claim 8, wherein said power combiner provides the first or second oscillating signals received from said second and third filter means based on the bias voltage. www.freepatentsonline.com /5263182.html

www.jssaturn.com -> Production -> By the order                                           Low noise down-converter is intended for application in receiving equipment of tropospheric station as low noise selective tuned converter of 4400 5000MHz microwave signals into the 70MHz IF signals. Low noise amplifier is intended for amplification of the weak microwave signals (4.4 5.0 GHz) and also for the embedding of both autocontrol signals and "overloading" signal (at input signal level in receiving channel more than minus 25 dBm) in receiving channel of station. Duplexer is intended for demultiplexing of the receiving and transmitting channels, for suppression of the second and third harmonics in receiving and transmitting channels, for changeover of transmitter radiation on the antenna equivalent and for signal generation of output power switching-off of frequency up-converter at the considerable mismatch of the transmitter channel input. www.jssaturn.com /production/byorder

Low-noise block converter - Wikipedia, the free encyclopedia A low-noise block converter ( LNB, for low-noise block, or sometimes LNC, for low-noise converter) is used in communications satellite (usually broadcast satellite) reception. If low noise engineering techniques were not used, the sound and picture of satellite TV would be very low quality, if it could even be received at all without a much larger dish reflector. The "low-noise" part means that special electronic engineering techniques are used so that the signal has less noise (unwanted signals) on the output than would be possible with less stringent engineering. en.wikipedia.org /wiki/LNBF

Patent 5119509: Low noise block down converter (LNB) for the simultaneous receipt of C/Ku-band satellite-broadcasting A low noise block converter according to claim 1, wherein said power distributor is driven by said local oscillation signals via band pass filters according to each band to provide the local frequency signals to the mixer means. The low noise block converter of claim 1, wherein differences between a first one of said local oscillation signals and lower and upper frequencies of said C-band equal differences between a second one of said local oscillation signals and lower and upper frequencies of said Ku-band. The low noise block converter of claim 2, wherein differences between a first one of said local oscillation signals and lower and upper frequencies of said C-band equal differences between a second one of said local oscillation signals and lower and upper frequencies of said Ku-band. www.freepatentsonline.com /5119509.html

ÃÀ¹úרÀûÉêÇ빫¿ªËµÃ÷Êé 20040189531 - Multi-layer substrate for low noise block down converter A multi-layer substrate of the invention for a low noise block down converter includes an antenna pattern conveying electric wave signals that have been carried along a waveguide, and three ground conductive layers stacked on the antenna pattern with dielectric layers therebetween. This provides a multi-layer substrate for a low noise block down converter where deterioration in the passage property of electric wave signals can be restrained. Multi-layer substrate for low noise block down converter cxp.paterra.com /uspregrant20040189531cn.html

Dish Head Glossary Low Noise Block down converter, a device that amplifies and converts a block of frequencies to a lower block of frequencies. Low Noise Block down converter with Feed horn, a fixed combination LNB and feed horn. Low Noise Converter, a device that converts a frequency to another. www.global-communication-networks.com /dish_head_glossary.htm

Low Noise Block Converters (LNBs) - Stallions Satellite and Antenna The lower the rating, the less noise (snow) will be added by the amplifier of the LNB, and the clearer the picture will normally be. All the electronics in the world cannot help the picture if you are losing half your signal and sending lots of noise into the feedhorn. The following illistrations from California Amplifier show the difference in drift between and a consumer-grade and commercial-grade PLL LNB. www.tvantenna.com /support/tutorials/lnbs.html

Tampa Microwave This low noise block down converter is used in a wideband satellite communications system to down convert an X band intermediate frequency (IF) to an L band intermediate frequency. www.tmli.com /products/print.asp?product=bdc_x

Satellite dish LNB low noise block down converter In the old days, LNB noise figures were high, the gain (amplification) was low and satellite transponder power was typically 20 Watts. You need to cut the losses as low as possible and provide an accurate adjustment for "skew" which is the rotational angle at which your dish receives the signal from the satellite. Even if you get a print out of the actual noise figures and gain performance when you buy your LNB, you have to bear in mind that these measurements were made in a factory under ideal conditions with the LNB receiving (probably) 18 volts and feeding an exact impedance of 75 Ohms. www.netcentral.co.uk /satcure/lnb.htm

Patent 5303403: Electronic switch for selecting satellite polarization signals The housing of the low noise block down converter (LNBF) and the chassis of the receiver (not shown) are common ground which are connected to a ground through an outer conductor of a coaxial cable 8. In the present invention, the +5 V and the ground used for the switch 1 are obtained from the low noise block down converter itself and there is only needed a wire for the switch 1 to receive the pulse signal from the TV receiver 3, as shown in the figure. The electronic switch according to claim 1, wherein the pulse width discriminator outputs the pulse with a pre-determined frequency if the pulse width of the input signal is higher than the reference width and outputs the 0 V signal if the pulse width of the input signal is lower than the reference width. www.freepatentsonline.com /5303403.html

Low Noise Block Converter - Wikipedia Der Zusatz Block in LNB ( Low Noise Block Converter) bezieht sich darauf, dass jeweils ein ganzer Frequenzbereich (ein Block) umgesetzt wird. Als LNB ( Low Noise Block Converter) wird das entscheidende elektronische Bauteil einer Die Bezeichnung LNC ( Low Noise Converter) verdeutlicht, dass eine Umsetzung auf eine niedrigere Zwischenfrequenz efolgt. de.wikipedia.org /wiki/Low_Noise_Block_Converter

App Note 225: Using Digital Potentiometers in Adjustable Step-Down DC-DC Converter Designs A simple improvement that dramatically improves the circuit's precision is to add resistors between the potentiometers low terminal and ground, and the high terminal and output voltage, see Figure 6. A reference design using the DS3903 is shown that features the ability to produce a regulated supply between 1.25V and 5.50V, and the potentiometer allows the supply to be calibrated to within 1.8% of the desired voltage level. A reference design using the DS3903 is shown that features the ability to produce a regulated supply between 1.25V and 5.50V, and the potentiometer allows the supply to be calibrated to within 1.8% of the desire voltage level. dbserv.maxim-ic.com /appnotes.cfm?appnote_number=225

Low Orbit Satelite Dish Low Noise Blockdown Feedhorn amplifies the signal collected on the parabolic antenna (dish. The Low Noise Blockdown Feedhorn amplifies the signal collected on the parabolic antenna(dish). consists of a low noise amplifier, downconverter, timing. www.satellite-tv-free.net /dish/satellite3880.html

Tech Note 3 The Block UpConverter or “BUC” and the Low Noise Block DownConverter or “LNB” now each contain a single fixed local oscillator, not required to tune for operation over the entire satellite band covering all transponders. Thus the phase noise on the oscillator must be extremely low and probably cannot be viewed directly on a spectrum analyzer. Includes a low noise RF front end and single down conversion stage to L-Band frequencies. www.datumsystems.us /tnote03.htm

SENTECH, Connecting you. :: SENTECH, Connecting you. The basic equipment is the same - a bi-directional satellite dish, a low noise block converter (for receiving data), a block up converter (for transmitting data) and a multi-protocol in-door communications hub. The o­nly equipment a customer needs for full internet access, is a desktop PC or a laptop, as the rest is supplied, owned and maintained by Sentech. www.sentech.co.za /index.php?module=ContentExpress&func=display&ceid=15&bid=22&btitle=ProductsAndServices&meid=25&POSTNUKESID=2216229b3816ac4cc563923ac911f78f

VertexRSI LT-3600 Up/Down Converters Drive SATCOM Performance and Keep Costs Low Both up and down converters can feed DC power and a 10 MHz reference out of the transmit or receive ports to supply either a phase-locked Block Up Converter (BUC) or Low Noise Block Converter (LNB). Each converter features an on-board micro controller that can be accessed by a front panel keypad or an RS-232 or RS-422/485 interface located on the rear panel. L-Band converters use frequency synthesizers designed and produced in high volume for cellular and PCS applications, which makes them more cost-effective to buy. www.tripointglobal.com /Communicator/10-20-04.htm

Due Emme Antenne - Tutto per la TV via satellite LNB è l'acronimo di Low Noise Block converter, vale a dire convertitore a basso rumore (disturbo). www.dueemme.com /tvsat.html

VSAT Installation - pole and non-penetrating mounts The outdoor RF unit comprises two radio modules: a low noise block down converter (LNB) and a transmit block up converter (BUC) plus a ortho-mode transducer (OMT) which is the joint where the transmit and receive waveguides join. A permanent safety rope is advised to be attached between the dish assembly and some fixed part of the building so that the dish does not blow off the building in exceptionally high winds. These also carry low voltage DC supplies to power the LNB and BUC. www.satsig.net /vsat_ins.htm

LNB down converter modifications for X-band Virtually without any retuning these block converters will yield a 1.0 to 1.1 dB noise figure and about 27 dB of gain at 10368 MHz.. The only modifications are the removal of the DRO/mixer down converter assembly, the addition of an output connector and feed thru capacitor and jumpering over a 12 GHz band pass filter on the PC board. There is no difference in noise figure performance with either a WR75 or WR90 transition feeding the amplifier. www.ham-radio.com /n6ca/microwave/lnb_mods/lnb_mod.html

Industrial computers and data acquisition - Amplicon Liveline A combination of a low noise amplifier technology, and a microwave downconverter for optimum noise performance, the Low Noise Block Converter is the key component in Channel Master's satellite antennas for domestic broadcast markets, principally in the USA. Channel Master, the world's largest manufacturer of satellite antenna systems, is now enjoying the benefits of an automated test regime developed for its Low Noise Block Converters (LNBs) in partnership with Amplicon Liveline, the leading distributor of IT and Instrumentation for Industry. Converting a high frequency band between 3.7 and 4.2GHz to a lower frequency band between 950 and 1450MHz at the antenna feed, each LNB provides high performance satellite television reception. www.amplicon.co.uk /casestudy.cfm?id=10237

TelecomWeb : ViaSatellite.com According to Jim Walworth, "Low Noise Block converters are not part of our traditional product line but we had a military customer that had a need for this product and there was nothing available on the market." Another product that Tampa Microwave added to its portfolio is an X-band Low Noise Block converter (LNB) that has an input of 7.25-7.75 GHz and an output of 950-1450 MHz with 50 dB nominal gain and noise figure of.9 dB maximum. This transverter is a bi-directional assembly that provides the tunable down-conversion with gain for the transmit direction and tunable up-conversion with low noise gain for the receive direction. www.telecomweb.com /satellite/viasatellite/profiles/tampamicrowave.htm

Converter Encyclopedia Article, History, Biography - Local Color Art Converter is also the name of a noise music project by Scott Sturgis. A converter is also what some people call a remote control. Converter On Sale - Converter plus 1000's of other RV Parts and Accessories for Sale. www.greatartworks.com /encyclopedia/Converter

TV*AE -- Tech pages -- Glossary For amplitude modulated analogue terrestrial television a S/N lower than 46 dB will result in increasingly visible noise. Noise can be expressed in 3 different ways: as a Factor in dB, as a value in dBuV or in degrees Kelvin. In the past it was only possible to convert 1 section of the band. www.tvae.co.za /tech-glossary.shtml

Radio wave receiving converter and antenna device - US Patent 6819299 The present invention generally relates to a radio wave receiving converter (LNB: Low Noise Block down Converter) for receiving a radio wave from satellite, and to an antenna device. An object of the present invention is to improve the workability regarding a connection of feed horn portions of a radio wave receiving converter, and to improve the reliability of the radio wave receiving converter by maintaining ensured air tightness at a feed horn connected portion. The converted signal is sent through a cable and an indoor receiving equipment, for example, a satellite receiver 24 to a television 25. www.patentstorm.us /patents/6819299.html

Allegro Product 8283 Intended for analog and digital satellite receivers, the low-noise block converter regulator (LNBR) is a monolithic linear and switching voltage regulator designed to provide power and interface signals to the LNB down converter via the coaxial cable. If the device is in stand-by mode (EN terminal LOW), the regulator output is disabled, allowing the antenna downconverters to be supplied or controlled by other satellite receivers sharing the same coaxial cable. A tracking current-mode buck converter provides the linear regulator with an input voltage that is set to the output voltage plus typically 0.8 V. This maintains constant voltage drop across the linear regulator while permitting adequate voltage range for tone injection. www.allegromicro.com /sf/8283

Novella - Block Converter Technical Notes External Block Converters may be assembled in their own 1U 19” chassis, with or without independent PSU and/or 10MHz reference. The term Block Converter applies to fixed conversion sub-systems usually used for frequency translation from (to) L-band to (from) SHF (C, X, Ku and DBS bands). Novella’s Block Converters may be built inside the frequency converters, or located outside the main L-band converter chassis. www.novella.co.uk /bc_tech_2.htm

Products This low noise amplifier series covers frequency range from 1.2GHz to 14.5GHz, featuring high gain, good flatness, low noise figure, small size and low cost. These converters are intended for use in Intelsat, Eutelsat and other satellite communications systems. These low profile MIC modules cover C-Band, X-Band and Ku-Band with IF choices of 70MHz and 140MHz, featuring low cost, compact size using microstrip and standard PC board construction, IF attenuator with built-in linearizer circuit, coupler, muting, and temperature compensation. www.jerseymicrowave.com /product.htm

Radio Road - Re: Isn't the dish also an Antenna? - Chris from RI, January 19, 2005 at 14:21:25 Then there is also the issue of the low noise block converter (LNB) at the dish's feedpoint requiring DC injection from the satellite receiver. If it was designed to receive C-Band or Ku-Band satellite service (both in the microwave frequency region) then it will not work properly for the FM band (VHF frequency region). As was previously mentioned, any directional "beam" type antenna will easily outperform a vertical whip. www.audioasylum.com /forums/tuner/messages/1754.html

U.S. Pregrant 20040072550 - Low noise block down converter with a plurality of local oscillators A low noise block down converter accommodates two local oscillators within one shielding chamber in a metal shielding box and has a conductive bar provided between two dielectric resonators included in the local oscillators respectively. Low noise block down converter with a plurality of local oscillators U.S. Pregrant 20040072550 - Low noise block down converter with a plurality of local oscillators cxp.paterra.com /uspregrant20040072550.html

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