Transmission LIne
See Also: Transmission Line Pulse
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High-Power Directional RF Wattmeters
81100-A Series
The 81100-A series of High-Power Directional RF Wattmeters are designed to measure RF power in 50-Ohm 1-5/8 inch coaxial transmission lines. To use the Wattmeter, simply connect it between the transmitter and antenna or dummy load and plug in the appropriate measuring element.
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RF Terminators
Typically placed at the end of a transmission line and is designed to match the cable's AC impedance.
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Single AXIS DIGITAL AC GAUSSMETER
IDR-109/IDR-119
Integrity Design and Reseach Corp.
Typical Applications include checking the 50 and 60 Hz electric and magnetic fields (EMF) produced by equipments such as transmission lines, computers, electric blankets, electric appliances, televisions, etc.. Magnetic fields are invisible radiations, the best method to detect them is by using one of the accurate gauss meter from Integrity Design & Research corp.
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Directional Couplers
Pasternack directional coupler category is passive devices that couple part of the transmission power in a transmission line. Our directional coupler series provides the bandwidth, high directivity and higher power that engineers need for their most demanding application designs. RF directional couplers often use two transmission lines set close together so that energy passing through one is coupled to the other. Many Pasternack directional coupler components are RoHS and REACH compliant. RF directional couplers are available with 4.1/9.5, 4.3-10, 7/16 DIN, Type N or SMA connectors. Our directional coupler line has 6dB, 10dB, 15dB, 16dB, 20dB, 30dB or 35dB coupling values. Power ratings of our typical and high power directional couplers range from 25 Watts to 70 Watts. Directional coupler frequency range of this product design is from 1 GHz to 8 GHz. As with our other over 40,000 RF, microwave and millimeter wave components from Pasternack, this directional coupler series is in-stock. Not only are these couplers in directional design in stock, they also will ship the same day as they are purchased.
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Magic Tee
MHTXE
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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Balun
Balun is the component for converting balanced transmission line and unbalanced transmission line each other.Murata delivers high performance LTCC packaged product by multilayer ceramics integration technology.
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Microwave Coaxial Cable Assemblies
MWX0 series
JUNFLON® MWX products are flexible signal transmission lines that take advantage of the remarkable properties of fluoropolymers. They are suitable for use with a wide range of frequencies up to 67 GHz. These products feature low insertion loss and low VSWR, low signal leaks and low interference due to high shielding effectiveness, and higher density wiring for use in the narrow device interiors. Junkosha provides highly reliable products for microwave /millimeterwave applications tailored to customer assembly needs.
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Time Domain Reflectometers and S-Parameter Analyzers
The Teledyne LeCroy WavePulser 40iX and the Teledyne Test Tools T3SP15D are a perfect combination of complimentary products to serve the requirements on testing, validating and troubleshooting cables, backplanes, connectors, transmission lines on boards and interconnect.
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Coaxial Waveguide Adapter, 1.85 mm (m), 40 to 60 GHz
U281B
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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NI-9775 , ±10 V, Up to 20 MS/s/ch, 14-Bit, 4-Channel C Series Digitizer Module
784539-01
The NI-9775 provides referenced single-ended analog inputs with two timing modes for applications such as fault detection in electrical transmission lines or structural failure events. You can use the NI-9775 to measure finite samples up to 20 MS/s/ch to capture fault detections or to measure continuously at up to 4 MS/s. You also can use the built-in analog reference trigger to assist with high speed phenomena. Additionally, the NI-9775 supports waveform streaming at a lower sample rate.
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Shielding Effectiveness/ Conductivity Test
EM-2107A | 30 MHz – 1.5 GHz
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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Coaxial Waveguide Adapter, 2.4 mm (f), 26.5 to 40 GHz
R281A
The Keysight R281A 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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Panel Mount Meters
The Coaxial Dynamics series of High-Power Panel Mount Meters are designed to measure RF power in 50-Ohm 1-5/8 to 6-1/8 inch coaxial transmission lines. Several different models are available with either 5/10/25 scales or 15/30/60 scales. The Panel Meter can be installed up to 200-feet from the Line Section with the permanently attached DC cables (10-foot normally supplied).
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Power Detectors
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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PCB Track equipotential viewer
EPD100
The EPD100 can plot equipotentials on single ended microstrips, and also edge coupled surface microstrips. It allows you to view the equipotential lines around a transmission line.
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Digital Line Protection System
DLPD
The DLPD provides distance protection for HV and EHV transmission lines. It may be used for single or three phase tripping applications. It includes four zones of distanceprotection. User selectable pilot schemes are provided with stepdistance backup. Ground instantaneous and time overcurrentfunctions are independently selectable to be directional ornon-directional.
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Coaxial Waveguide Adapter, 1.85 mm (f), 40 to 60 GHz
U281A
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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MW AM Broadcast Mobile Antenna System
TUP-3
The TUP-3 system is capable of transmitting efficiently at carrier frequencies from below 1000 kHz to over 1700 kHz. It is rated for power to 5000 watts, 125 percent modulated. Housed is a weatherproof cabinet, the integral tuning unit features high quality electronic components and matches the TUP-3 system to a 50 ohm transmission line. The self-supporting design of the tower also minimizes erection time and complexity.
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Impedance Measurement
CITS880s
Finer geometries and thinner copper can present a challenge for fabricators measuring impedance on leading edge PCBs. The CITS880s answers that challenge with the introduction of Launch Point Extrapolation (LPE). LPE extrapolates the TDR response back to a point close to the start of the transmission line effectively allowing to users more accurately to measure the instantaneous or incident impedance of the line.
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Rotman Lens Designer
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
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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Fault Locating
Schweitzer Engineering Laboratories, Inc.
The built-in fault-locating methods in SEL devices allow you to quickly identify faults, dispatch crews for repairs, and restore service faster. Traveling-wave fault-locating technology calculates the locations of temporary and permanent faults by measuring the arrival times of the naturally occurring traveling waves caused by a transmission line fault. Accurately detecting these waves requires ultra-high-resolution monitoring, and locating is accurate to within one tower span (±300 m). Impedance-based fault-locating technology calculates fault locations by detecting changes in line impedance as a result of a fault. Impedance-based locating is reliable and accurate to about 2 percent of a line’s total length.
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Dual (Bi) Directional Couplers
Pasternack dual directional coupler (also known as bi-directional coupler) series are passive devices that couple part of the transmission power in a transmission line. Our dual directional coupler components provide the bandwidth, high directivity and higher power that designers need for their most demanding applications. RF dual directional couplers often use two transmission lines set close together so that energy passing through one is coupled to the other. Many Pasternack bi-directional coupler items are RoHS and REACH compliant. Couplers that are dual directional from Pasternack are available with SC, SMA and Type N connectors. This dual/bi directional series is offered in 10dB, 20dB, 30dB, 40dB and 50dB coupling values. Power ratings for our dual directional couplers range from 10 Watts to 10 Watts. Frequency ratings for our bi-directional couplers range from 1 GHz to 8 GHz. Like the other over 40,000 RF, microwave and millimeter wave components from Pasternack, our dual (bi) directional coupler series is in-stock. Not only our these couplers in stock, they also will ship the same-day as they are purchased.
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Coaxial Waveguide Adapter, 2.4 mm (f), 33 to 50 GHz
Q281A
The Keysight Q281A is a 2.4 mm female to WR-22 waveguide adapter that operates in the 33 to 50 GHz frequency range. These adapters transform waveguide transmission lines into 50 ohm coaxial lines. 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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Coaxial Waveguide Adapter, APC-7, 12.4 to 18 GHz
P281B
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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Lange Couplers
The Lange Coupler is a four-port interdigitated structure originally developed by Dr. Julius Lange in 1969. They are a common RF/microwave circuit. The coupling is derived from closely spaced transmission lines, such as microstrip lines. With the introduction of Ion Beam Milling, SemiGen’s ability to consistently produce Lange Couplers with lines and spaces as small as 10 microns and controlled to tolerances of +/- 1 micron is a direct result of our anisotropic ion beam etching process.
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Impedance Matching Pads
Impedance matching pads from BroadWave eliminate impedance discontinuity (mismatches) without introducing reflection to the circuit. Custom units are available in a variety of impedance and connector types from DC to 4 GHz. BroadWave Technologies impedance matching pads preserve signal integrity by matching virtually any transmission line.
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Wattchman RF Station Monitor/Alarm Systems
81070 Series
The Coaxial Dynamics Wattchman Monitor/Alarm measures forward and reflected RF power simultaneously in 50-Ohm coaxial cables and transmission lines. It is compatible with our entire series of 7/8" through 6-1/8" Line Sections and will accept plug-in elements that range from 5 watts to 100 kW full scale from 0.45 MHz to 2300 MHz.
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ESD Testing & Latch-Up Testing Services
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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Power Divider/Combiner
Passive devices used mostly in the field of radio technology. They couple a defined amount of the electromagnetic power in a transmission line to a port enabling the signal to be used in another circuit.
