Transmission LIne
See Also: Transmission Line Pulse
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Product
Transmission Line Probes
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Transmission line probes are a special type of passive probe designed for use at very high frequencies. They replace the high impedance probe cable found in a traditional passive probe with a precision transmission line, with a characteristic impedance that matches the oscilloscope input (50 Ohm). This greatly reduces the input capacitance to a fraction of a picofarad, minimizing the loading of high frequency signals. A matching network at the tip increases the DC input resistance. While they have lower DC input resistance than a traditional passive probe (usually 500 Ohm) to 1kOhm), the input impedance of these probes remains nearly constant over their entire frequency range. A traditional /10 passive probe will have a 10 MOhm) input impedance at DC, however this impedance drops rapidly with frequency, passing below the input impedance of a transmission line probe at less than 100 MHz.
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Transmission Line Pulse Testing
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Transmission Line Pulse testing, or TLP testing, is a method for semiconductor characterization of Electrostatic Discharge (ESD) protection structures. In the Transmission Line Pulse test, high current pulses are applied to the pin under test (PUT) at successively higher levels through a coaxial cable of specified length. The applied pulses are of a current amplitude and duration representative of the Human Body Model (HBM) event (or a Charged Device Model – CDM – event in the case of Very Fast TLP, or VF-TLP).
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Transmission Line/Cable Testing
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HAOMAI Electric Test Equipment Co., Ltd.
Transmission Line/Cable Testing products by Haomai
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Rotman Lens Designer
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Rotman Lens Designer (RLD) is a software tool for the design, synthesis, and analysis of Rotman Lenses and their variants. It is based on Geometrical Optics combined with the classical Rotman Lens design equations. It is intended for rapid development and analysis of Rotman Lenses given several physical and electrical input parameters. RLD generates the proper lens contours, transmission line geometry, absorptive port (dummy port) geometry, provides an approximate analysis of performance, and generates geometry files for import into Remcom's XFdtd® for further analysis and fabrication.
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TDR Structural Health Monitoring
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Material Sensing & Instrumentation
MSI Time-Domain-Reflectometry (TDR) Structural-Health Monitoring probes the structural health of a composite part by propagating a fast electrical pulse along a distributed linear sensor which has been fabricated directly in the laminate. The sensor is formed from the native graphite fibers already used in composite manufacture, and constitutes zero defect. Fibers are patterned into a microwave waveguide geometry, or transmission line, and interrogated by a rapid pulse as shown below. Structural faults along the line cause distortions in waveguide geometry, producing reflected pulses similar to radar. Cracking, delamination, disbonds, moisture penetration, marcelling, and strain are all detected by propagation delay, for sensor lengths up to several meters.
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Product
UNI-T Series
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Weshine Electric Manufacturing Co., Ltd
mainly used to measure the wire resistance of cables, the contact resistance ofswitches, connectors, relays, the resistance of coils, motors, transformer windings, and equipment enclosures, lightning protection belts, ground beams, structures, cabinets, steel bars, Test the connection resistance between metal components of water pipes, windows, guardrails, radiators, assembly lines, etc. It is widely used in telecommunications, electric power, meteorology, computer rooms, oil fields, power distribution lines, tower transmission lines, gas stations, factory grounding grids, lightning rods, etc.
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Product
Line Protection
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Schweitzer Engineering Laboratories, Inc.
SEL transmission line protection relays provide subcycle line differential and multizone distance protection for a secure, reliable, and high-speed solution. Their fault-locating capabilities allow you to efficiently dispatch line crews to quickly isolate line problems and restore service faster.
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Shielding Effectiveness/ Conductivity Test
EM-2107A | 30 MHz – 1.5 GHz
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The EM-2107A is a standard test fixture for evaluation of the electromagnetic shielding effectiveness of planar material. The fixture is an enlarged section of coaxial transmission line and complies fully with the requirements of ASTM test method D4935-1. The measured data relates to the shielding effectiveness due to a plane wave (far field EM wave) from which near field values for magnetic and electric fields may be inferred. The EM-2107A is provided with a reference standard test specimen, a dynamic range specimen. Dynamic range of greater than 80dB is achievable, although the cables and other test system components usually establishes the limiting factors.
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Product
Impulse Semiconductor High Current Integrated
Transmission Line Pulse Test System
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The Impulse Semiconductor High Current Transmission Line Pulse (TLP) test system is the tool of choice for extracting ESD parameters for transient protection devices in a package, or at wafer level. With accuracy better than 100 milliohms at 40 amps peak current, the Impulse high current TLP is specially tailored to the needs of today's ESD device designers who must accurately measure low values dynamic resistance irrespective of breakdown voltage.
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3 DB 90 Degree Hybrid Couplers
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KRYTAR's 90 Degree Hybrid Couplers perform many functions, including splitting and combining signals in amplifiers, switching circuits, and antenna beam-forming networks used in a wide range of commercial and military applications. 90 degree hybrids are used in circuits requiring a balanced division of power into two transmission lines with 90 degree separation of phase.
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Product
LXI RF & Microwave Matrices
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Each of our RF & Microwave matrices is designed to have a controlled transmission line impedance and architecture developed to maximize the bandwidth of the product. The RF matrices are designed with crosspoint switch systems interlinked with isolation relays and loop-thru connections to minimize stub loading of the matrix. The mechanical and electrical freedom of LXI allows us to design RF and Microwave matrices to suit most applications.
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Field Strength Receiver
KH3933
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Beijing KeHuan Century EMC Technology Co,.LTD
KH3933 is a fully automatic interference field strength receiver integrating antenna and receiver. It is an important equipment for space field strength testing. It can be used to measure useless or harmful related radio interference signals in space, as well as medium wave and short wave. The field strength of the radio signal from a radio station. When measuring radio interference signals, this machine complies with GB/15707-1995 , DL/T691-1999 , and is suitable for high-voltage transmission lines and substation radio interference signals. This receiver complies with CISPR16-1 and GB6113-1 manufacturing standards.
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Coaxial Waveguide Adapter, 1.85 mm (m), 40 to 60 GHz
U281B
Coax Adapter
The Keysight U281B adapter transforms waveguide transmission line into 50-ohm coaxial line. Power can transmitted in either direction, and each adapter covers the full frequency range of its waveguide band with SWR less than 1.3.
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Product
Magic Tee
MHTXE
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The MHTXE Magic Tee Hybrid Couplers for millimeter waves are matched power dividers for variety of applications (general purpose power splitters, power combiners, phase measurement circuits, phase / frequency discriminators). The MHTXE Magic Tee Hybrid Couplers are available in waveguide bands between 33 and 170 GHz. These couplers are four-port transmission line components with a port configuration as shown in figure. Operation bandwidth is limited to 20÷90% waveguide operation frequency range depending on performance specifications.
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Product
(125×150×20mm) C-Band DWDM Line EDFA Module
WLA4200-FM05
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Hangzhou Huatai Optic Tech. Co., Ltd.
Huatai WLA4200-FM05 series is a gain flatness line EDFA Module which is specifically designed for C-Band 44 channels optic transmission system. It adopts the most excellent optical performance, the most advanced electronic control technology and the most complete software functionalities; it is featured with wide working wavelength range, low noise and excellent gain flatness. WLA4200-FM05 is mainly installed in middle of transmission line, replacing the traditional relay, to compensate the optical power loss in the line and extend the optical signal transmission distance
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Product
Air Core Shunt Reactors
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Shunt Reactors act as absorbers of reactive power to increase energy efficiency of the power system. Shunt Reactors are inductors that are used in order to compensate capacitive reactive power generated by long and lightly loaded transmission lines as well as underground cables, thus allowing the flow of more active power through the system and avoiding over voltages. The shunt reactors provide inductive compensation.
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Coaxial Components
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Surge arrestors are designed to protect wireless base stations, switching centers and transmission lines fromthe damaging effects of extreme high voltage surges caused by lightning strikes. The RFS lightning protectiondevices are designed and tested to the most demanding specifications. They are rated to protect against bothdirect and indirect multiple strikes in the harshest environments imaginable. Their rugged construction utilizes solid metal housing, and superior plating, which results in outstanding system protection and operatingcontinuity.
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Cable Fault Locating Equipment
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Commonly used to test underground coaxial and twisted pair cabling, along with transmission lines and other industrial electrical cables.
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Product
7.5 GHz Low Capacitance ÷10/÷20 probe
PP066
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The PP066 is a high-bandwidth passive probe designed for the use with the WaveMaster™ and other high-bandwidth oscilloscopes that have 50 Ω input termination. This very low capacitance probe provides an excellent solution for higher frequency applications, especially the probing of transmission lines with 20–100 Ω impedance.
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Power Detectors
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Macom Technology Solutions Holdings Inc.
MACOM’s power detectors are broadband devices that have integrated low loss directional couplers and built-in temperature compensation circuits. These detectors provide an easy way to monitor the power of a signal travelling in a specific direction along a transmission line. These detectors are conveniently housed in miniature lead free plastic surface mount package. Typical applications include; Power monitoring and leveling in Point-to-Point radios, IMS, Radar, VSAT, EW, Aerospace and Defense Systems.
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Traveling Wave Fault Locator
XC-2100E
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XC 2100E, a Fault Location System based on principle of travelling wave detection is the solution to above problem. It can detect not only permanent fault, but also transient fault within one tower span accuracy (with best accuracy of ±50 meters). It is a kind of Line Monitor for continuous monitoring of transmission lines and gets triggered whenever travelling waves are generated on line due to switching, lightening or fault.
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Product
Coaxial Waveguide Adapter, APC-7, 12.4 to 18 GHz
P281B
Coax Adapter
The Keysight P281B adapter transforms waveguide transmission line into 50-ohm coaxial line. Power can transmitted in either direction, and each adapter covers the full frequency range of its waveguide band with SWR less than 1.3.
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AM Antenna Tuning Units
ATU's
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LBA medium wave AM Antenna Tuning Units (ATU) and Line Tuning Units (LTU) are impedance matching units designed to match the transmitter to the impedance of the transmission line or the antenna system. Our Antenna Tuning Units are available for both series-fed and {ln:Tunipole antenna systems} Tunipole™ antenna systems to powers in excess of 500 kW.
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RF Terminators
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Typically placed at the end of a transmission line and is designed to match the cable's AC impedance.
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LXI WTB Extender
60-984-001
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The 60-894 provides a simple an effective method of joining two LXI WTB bus cables together to extend the length of available cables. It is an ideal solution for cable extension where users need to experiment with different cabling solutions without having to totally replace the cables in the system. The 60-894 provides mating connectors for the WTB on each end connected together by a set of accurate differential transmission lines to avoid additional reflections on the cable. The 60-894 is entirely passive and is compatible with the LXI specification.
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Product
Stripline Automotive 10KHz-30MHz 50 Ohm
STPL-30
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The GTEMCELL STPL-30 Stripline is designed to produce high electric fields over a controlled bandwidth. It is used to perform EMC measurements according to automotive and aerospace standards in order totest the immunity of automotive and aircraft equipment to radiated electromagnetic fields.The STPL-30 uses a dual-sided tapered adjustable feed design into a tunable transmission line.
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Product
Coaxial Waveguide Adapter, 1.85 mm (f), 40 to 60 GHz
U281A
Coax Adapter
The Keysight U281A adapter transforms waveguide transmission line into 50-ohm coaxial line. Power can transmitted in either direction, and each adapter covers the full frequency range of its waveguide band with SWR less than 1.3.
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ESD Testing & Latch-Up Testing Services
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EAG is an industry leader in ESD testing (Electrostatic Discharge) and Latch up testing. Our highly experienced engineering team use their industry leading knowledge and years or real world experience of the latest semiconductor technologies, circuit design, and device physics to optimize our customer's ESD and latch-up results. Human Body Model (HBM) and Machine Model (MM), Charged Device Model (CDM), Latch-up, Transmission Line Pulse (TLP).
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LXI WTB Terminator, 109.8 ohm
60-983-003
Terminator
The 60-983 is an LXI compatible Wired Trigger Bus Terminator (WTB) designed to be attached to the end of a WTB cable. The LXI WTB uses a transmission line cable to connect LXI devices together that support the WTB capability of the LXI standard. Like all transmissions it needs to be correctly terminated to avoid reflections that could change the signal amplitude along the cable and generate timing jitter or trigger errors. The 60-983 is a simple terminator that can be placed at each end of the WTB chain to correctly terminate the transmission line with minimal reflections.
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Transmission Line Testers
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GAOTek provides affordable, safe and reliable transmission line testers, digital clamp meters and power meters for sale to the United States, Canada and Globally. A transmission line is a specialized cable designed to conduct alternative current of radio frequency. Transmission lines are used for connecting radio transmitters and receivers with their antenna to distribute signals.
