Amplifiers have very low internal noise characteristics. Normally, low noise amplifiers are placed near the receiver or antenna to capture the carrier power before it can be further degraded by noise in the receiving system.
Power amplifiers (PAs) significantly boost the power level of low or intermediate level signals, usually during the final stage of amplification in a transmitter.
Devices bridge two system stages. Buffer amplifiers have very high input impedance and very low output impedance. Their gain is close to or equal to 1.
Detector log video amplifiers (DLVAs) are used to amplify or measure signals with a wide dynamic range and wide broadband. These signals cannot be handled with linear amplifiers without adding distortion to the output signal. In these cases, logarithmic amplifiers are used. DLVAs use diode detectors to detect the envelopes of RF signals and compress them in a subsequent video amplifier stage to approximate a logarithmic transfer function. DLVAs have a limited dynamic range.
Limiting amplifiers accept a wide range of input voltages and provide constant level output voltages. The output is a clipped version of the input waveform - the amplitude information is obliterated - that preserves the frequency and phase information of the input signal.
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Free electron lasers ranging in wavelength from the microwave to infra red regions are being used in a fundamental study of the application of these devices to welding, cutting, semiconductor processing, medical applications, plasma heating and isotope separation
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Restriction of Hazardous Substances (RoHS) is a European Union (EU) directive that requires all manufacturers of electronic and electrical equipment sold in Europe to demonstrate that their products contain only minimal levels of the following hazardous substances: lead, mercury, cadmium, hexavalent chromium, polybrominated biphenyl and polybrominated diphenyl ether. RoHS will become effective on July 1, 2006.
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"Required" and "Must Not Have" criteria limit returned
matches as specified. Products with optional attributes
will be returned for either choice.
This is the frequency range for which amplifiers meet all guaranteed specifications.
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User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria.
Overrange specification limits the range of matching products to the specified
range multiplied by a selected overrange factor. This keeps returned matches
close to the range requirement and filters out products with a wider range
than needed. "From", "To", and "Overrange" must all be specified to
activate this option.
Example: User specifies a sensor with a range from
0-100. Without overrange specification, sensors with ranges of 0-100, 0-1000,
and -10,000 to +10,000 are returned as matches. An overrange specification
of 50% will filter out any sensors with a full scale range greater than 150.
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Matching products will have a range within the specified overrange limit.
This is the minimum design gain, the ratio of the output to the input power of the signal. Normally, design gain is expressed in decibels (dB), or Gdb = 10 * log(Po/Pi).
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All matching products will have a value greater than or equal to the specified value.
This is the maximum design gain, the ratio of the output to the input power of the signal. Normally, design gain is expressed in decibels (dB), or Gdb = 10 * log(Po/Pi).
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All matching products will have a value less than or equal to the specified value.
Output power is the signal power at the output of the amplifier under specified conditions such as temperature, load, VSWR, supply voltage, etc. Output power is typically expressed in dBm or mW.
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User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
The noise figure (NF) is the ratio (in dB) of the signal-to-noise ratio at the input of the component and the signal-to-noise ratio measured at the output. NF is a measure of the amount of noise added to the signal during normal operation. A low noise figure means better performance. The NF value sets the lower limit of the amplifier's dynamic range.
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User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
In a system, impedance mismatches cause some of the transmitted energy to be reflected back to its source. The frequency of the signal determines the amount of energy that is reflected. Input voltage standing wave ratio (VSWR), a unit less ratio ranging from 1 to infinity, expresses the amount of reflected energy at the input of the device. A value of 1 indicates that all the energy passes through. Any other value indicates that a portion of the energy is reflected. There is an equivalent definition for output VSWR, which can also be expressed in terms of return loss (in dB).
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User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
In a system, impedance mismatches cause some of the transmitted energy to be reflected back to its source. The frequency of the signal determines the amount of energy that is reflected. Output voltage standing wave ratio (VSWR), a unit less ratio ranging from 1 to infinity, expresses the amount of reflected energy at the input of the device. A value of 1 indicates that all the energy passes through. Any other value indicates that a portion of the energy is reflected. There is an equivalent definition for input VSWR, which can also be expressed in terms of return loss (in dB).
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User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
Surface mount technology (SMT) adds components to a printed circuit board (PCB) by soldering component leads or terminals to the top surface of the board. SMT components have a flat surface that is soldered to a flat pad on the face of the PCB. Typically, the PCB pad is coated with a paste-like formulation of solder and flux. With careful placement, SMT components on solder paste remain in position until elevated temperatures, usually from an infrared oven, melt the paste and solder the component leads to the PCB pads.
Industry-standard pick-and-place equipment can mount SMT components quickly, accurately, and cost-effectively. SMT is a widely used alternative to mounting processes that insert pins or terminals through holes and solder leads into place on the opposite side of the board.
Through hole technology (THT) mounts components on a printed circuit board (PCB) by inserting component leads through holes in the board and then soldering the leads in place on the opposite side of the board.
Other, unspecified, package or form factor such as rack mount, desktop unit, etc.
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All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
Bayonet Neil-Concelman (BNC) connectors were designed for military applications, but are used widely in video and RF applications to 2 GHz. BNC connectors have a slotted outer conductor and a plastic dielectric that causes increasing losses at higher frequencies. BNC connectors are usable above 4 GHz as long as the slots radiate signals; however, these devices may not be mechanically stable to 10 GHz. Both 50 and 75 BNC connectors are available. BNC connectors are also known as bayonet navy connectors or baby Neil connectors.
Miniature coaxial (MCX) connectors provide broadband capability through 6 GHz and are used in applications where weight and physical space are limited. They provide good electrical performance and are used to address the rapid implementation of the U.S. digital cellular PCN infrastructure. MCX connectors are also used in global positioning systems (GPS) and wireless LAN (WLAN) applications.
Mini-UHFconnectors are a miniature version of the original UHF connector. They feature a threaded coupling mechanism for reliable mating. Mini-UHF connectors are designed for use in cellular mobile telephone systems where size, weight and cost are critical. With crimp cable termination for low installation costs, these connectors provide excellent RF performance in applications through 2.5 GHz.
Micro-miniature coaxial (MMCX) connectors are smaller than MCX connectors and feature a more robust interface for greater durability. They are ideal for high volume, wireless SMT or PCMCIA applications in cellular base stations, cellular phones and personal communicators. MMCX connectors are also used in global positioning systems and wireless LAN (WLAN) applications.
Subminiature-A (SMA) connectors are intended for use on semi-rigid cables in components. They directly interface the cable dielectric without air gaps. They are not intended for permanent connections.
Subminiature-N (SMB) connectors are snap-mount connectors that are available either in 50 or 75 impedances. They are used for frequencies from DC to 4GHz.
Threaded Neil-Concelman (TNC) connectors are similar in size to BNC connectors but feature a threaded coupling nut for applications that require performance to 11 GHz. TNC connectors are durable, reliable devices that are widely used in the cellular and mobile communication industry for equipment cabling and antenna interfaces.
Type N connectors include an integrated gasket to protect against environmental ingress and create an air gap between the center and the outer conductor. They primarily have 50 impedance, but 75 versions for CATV are available.
Ultra high frequency (UHF) connectors are economical, all-purpose connectors designed with non-constant impedance for use in comparatively low voltage and low frequency applications such as citizens' band (CB) communications systems. UHF connectors are also used in public address systems, closed circuit television (CCTV), civil defense, landing systems, ground control apparatus, ship-to-shore communications, and mobile radio equipment hookups between antenna and transmitters or receivers.
1.6 / 5.6 connectors are mechanically sturdy devices that feature a coupling mechanism. They are often used with equipment that requires resistance against environmental and mechanical stress. 1.6 / 5.6 connectors are also suitable for handling RF analog and digital signals in telecommunications systems.
7-16 connectors are designed for use in medium to high power communication systems. These connectors perform exceptionally well in multichannel cellular systems where power levels approximate 100 watts per channel. Designed for both flexible as well as corrugated cables, these connectors are used in a variety of cellular base station and broadcast communication applications.
Products with the selected attribute will be returned as matches. Leaving or selecting "No Preference" will not limit the search criteria for this question; products with all attribute options will be returned as matches.
Products with the selected attribute will be returned as matches. Leaving or selecting "No Preference" will not limit the search criteria for this question; products with all attribute options will be returned as matches.
This is the full-required range of ambient operating temperature.
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User may specify either, both, or neither of the limits in a "From - To" range; when both are specified, matching products will cover entire range. Products returned as matches will meet all specified criteria.
and 75