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Topic: RF probe

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Measuring instrument

	N5ESE's Ballpoint RF Probe
		Electrically, it's identical to the Classic RF Probe described elsewhere (where you can also find the theory discussion for this one).
		Like the Classic RF Probe, this one is used in conjunction with a high-impedance-input Voltmeter or Digital Voltmeter (DVM).
		She has the ground clip connected to a convenient place in the circuit's ground, and the probe touches the test point we want to measure.
	www.io.com /~n5fc/rfprobe2.htm (1166 words)

	FlashWebHost.com - Makinging RF Probes.
		An RF probe is used to directly measure the level of RF voltage present at a particular point and is one of the most useful test instrument in the hands of the home brewer.
		It is normally used with a digital multi meter to indicate the voltage level as dc voltage which is equivalent to the RMS value of the RF voltage being measured.
		The design of the RF probe is a function of the DC input resistance of the meter we intend to use with it.
	www.flashwebhost.com /circuit/rfprobe.php (301 words)

	Method for the calibration of an RF integrated circuit probe - Patent 6480013
		A method for the electrical testing of an RF integrated circuit present on a silicon wafer, made by means of an RF probe and a test station provided with RF ports and a vector network analyzer, comprising a step for the calibration of the probe according to claim 1 before testing the integrated circuits.
		A method according to claim 12, wherein calibrating the RF integrated circuit probe comprises measuring the RF characteristics of the RF integrated circuit probe, and wherein the RF characteristics of the probe are used as corrective terms during the electrical testing of the integrated circuits.
		The probe tips 22, which have a small length of about 3 to 9 mm, are soldered by their base to the printed circuit 21 and are held by an electrically insulating part 29 forming a sort of crown extending beneath the printed circuit 21.
	www.freepatentsonline.com /6480013.html (7326 words)

	Radio Frequency Touch Probes Enhance Productivity
		This system is close to foolproof--except when the probe and receiver are out of visual contact, as when the probe is deep within a bore or other depression within a work piece.
		The Mida RF system consists of three basic parts: a compact radio transmitter, a receiving antenna (typically one per machine) and a Marposs E86 machine interface unit.
		With the Mida RF probe, it's possible to select 16 different radio transmission frequencies on four different channels, allowing operation of multiple systems in close proximity.
	www.qualitydigest.com /feb00/html/apps3.html (425 words)

	Simple RF Measurement Probe
		This probe is useful for any low level RF work, and simply connects to your multimeter.
		The voltage shown will not be accurate, since this is a rectifier probe, but the measurements are good enough for you to be able to determine where the RF stops, or if a stage is not giving the gain you think it should.
		House the probe itself in some plastic tubing (an old pen barrel would work well), and use a sharpened nail for the probe, and an alligator clip on the ground lead.
	www.sound.westhost.com /project74.htm (385 words)

	Calibration of RF Survey Instruments
		Probes calibration begins with establishing either an electric field or a magnetic field of known intensity.
		If the probe does not have an amplifier where gain can be adjusted, an adjustment is made in the meter so that the survey set reads correctly at the calibration frequency.
		For shaped frequency response probes, there should be calibration points at the "break points" in the particular standard that the probe in attempting to conform to.
	www.rfsafetysolutions.com /calibration.htm (967 words)

	Mag Moments #10
		The RF magnetic field probe is built on the same principles as the RF voltage probes.
		Thus if the RF magnetic field probe is used to measure the magnetic field at the hub of a transmitting loop (the RF probe must be small in diameter compared to the transmitting loop), the magnetic moment of the transmitting loop can be directly estimated.
		The RF probe opens the way to much easier and more accurate testing of antennas, of their efficiency at converting electrical power into magnetic moment.
	www.caves.org /section/commelect/mm/mm10.html (798 words)

	Selecting Equipment
		Unlike a probe with many parameters to look at, there are only two parameters that impact accuracy in a meter.
		This is because probe parameters dominate when looking at the accuracy of a complete survey set (meter and probe).
		If you make measurements with a probe that is "out of square law", which is described in Measurement Artifacts, it is easy to overestimate the actual field strength by up to ten to one.
	www.rfsafetysolutions.com /selecting_equipment.htm (741 words)

	RF Probe \| RF Design - Medium impedance RF probe is rugged and wideband - rf probe
		The probe consists of an SMA connector followed by a series capacitor and resistor, which is further connected to a short semi-rigid coax that serves as the probe tip (Figure 1).
		Furthermore, the maximum frequency of the probe is extended to 1.9 GHz by removing the coax and using the resistor itself as the probe tip.
		The frequency response in Figure 2 is obtained by probing across a 50 Ω resistor that is connected across the output of a calibrated signal generator.
	rfdesign.com /mag/radio_medium_impedance_rf (808 words)

	CPM-700 Counter-Surveillance Probe
		RF sweeping is done quickly, easily and silently with the CPM-700 by attaching the RF probe.
		The RF probe provides rapid and silent spectrum coverage from 200Hz to over 3GHz with no holes or gaps.
		Using the IR Probe, we will go around the outside of the building to detect any lasers that may be pointed at the windows of the building.
	www.wtcionline.com /CPM-700.html (623 words)

	Welcome to ImplantChips.com - Information on RF probe technology
		Single-point ShieldPoint 300 features 3-element shielded probes and 10 A DPDT relay, while multi-point ShieldPoint 400 offers variety of probe options, Teflon coated or bare rods and cables, along with 2 SPDT 10 A relays.
		Both are housed in aluminum enclosure with LED indicators for operation and calibration.
		The ShieldPoint 400 is a multi-point switch with a variety of probe options, including a 3-element probe, Teflon coated or bare rods and cables, along with 2 SPDT 10 amp relays.
	www.implantchips.com /RF_probe_technology_RF_probe_technology_technology_29494.html (336 words)

	RFP5200 E and H Field Probe Set
		RF Probe's E & H Field Probe Set is a new affordable diagnostic tool for electromagnetic compatibility (EMC) testing when designing new equipment to meet the now mandatory EMC frameworks in Europe, Australia, USA and other countries.
		The probe set is designed to be used with test equipment such as spectrum analysers or RF communication receivers.
		Because H-fields increase rapidly with distance to the source, according to a cube law, one observes a rapid increase of the probe's output as the source of interference is approached.
	www.rfprobes.com.au /5200.htm (426 words)

	PRESS RELEASE Keithley/GGB Partnership Brings Parallel DC And RF Measurements To Wafer Testing (Site not responding. Last check: )
		The DC and RF parameter extractions obtained with these systems are used for device modeling, process monitoring, and general analysis of complex signals up to 40GHz.
		Until now, separate DC and RF tester/prober combinations were required to cover both ends of the measurement spectrum, resulting in extra cost and floor space.
		RF data is collected via GGB's patented coaxial design, which has a precision miniature 50 ohm coaxial cable from the probe tips to the connector interface.
	www.marketwire.com /mw/iwpr?id=37037&cat=te (881 words)

	Picoprobe® Model 40A High Performance Microwave RF Probe
		Model 40A probes can be mounted on both industry standard 4.5 inch probe cards and custom-sized probe cards for testing wafers at high frequencies using standard automatic or manual probe stations.
		Picoprobe Probe Cards can be designed with all of our microwave probes operating from 40, 67, and 110 GHz for RF applications and can be combined with multiple DC needles for power and low frequency signals as well.
		Other models of RF probes are available with standard tip spacings of up to 2540 microns.
	www.ggb.com /40a.html (1128 words)

	Ultra-Low-Cost, Medium Impedance RF Probe Is Rugged and Wideband - Maxim/Dallas
		The RF probe consists of a SMA connector, followed by a series capacitor and resistor, then by a short semi-rigid coax that serves as the probe tip.
		Furthermore, removing the coax and using the resistor itself as the probe tip extends the maximum frequency of the probe to 1.9GHz.
		The 11mm length of the coax in Figure 1 is a tradeoff between better RF performance for a shorter coax and improved mechanical robustness for a longer coax with more solder attachment surface.
	www.maxim-ic.com /appnotes.cfm?an_pk=3699 (630 words)

	N5ESE's Classic RF Probe
		To use the RF Probe for signal tracing in a malfunctioning RF circuit or a homebrew circuit, connect the aligator clip to a convenient "ground" or "common" point in your circuit.
		Most of the time, you'll be probing at the base/gate, emitter/source, or collector/drain of a transistor, one either side of a coupling capacitor or transformer, or at the input or output of an IC.
		Using the probe, I was able to follow a steadily increasing RF signal through the transmit chain, from the oscillator through the transmit mixer, to the pre-driver, and the driver.
	www.io.com /%7en5fc/rfprobe1.htm (2490 words)

	The minispec ProFiler
		Nowadays, the ability to perform magnetic resonance experiments by simply placing a sample on the surface of the RF probe (so-called single-sided NMR) is a rather attractive method for the rubber and plastics industry, food quality control, soil investigation, and medical research, for example, but also for cultural heritage diagnostics.
		The mq-ProFiler is essentially immune to sample-induced effects on the tuning and matching conditions for the RF probe (a well-known problem in NMR).
		The RF inserts are robust from the electrical point of view as well.
	www.minispec.com /products/ProFiler.html (1011 words)

	Watlow RF Probe Thermocouples Ideal for Generation of Plasma - Watlow Electric Manufacturing Company
		The RF probe is ideal for reading temperatures through such interference as seen in semiconductor wafer processing and etching.
		RF probe, certified to conform to NIST, is designed with a combination of high performance materials.
		The probe is easily integrated into a platen or pedestal, and can be customized to fit the customer's exact specifications.
	www.watlow.com /news/newsdetail.cfm?id=3501 (208 words)

	2055HA - NEAR FIELD RF DETECTOR/DIFFERENTIAL RF PROBE (MK IV)
		The 2055HA is designed to detect low level radio frequency (RF) radiation from transmitters, receivers, computers, etc. One of the two antennas detects towards positive while the other detects towards negative, therefore, if the source of RF energy is away from the two antennas (i.e.
		As the ratio of the distance between the RF source and the antennas decreases, one antenna receives more RF than the other and the meter swings on that direction.
		The 2055HA say also be used as a single antenna RF detector by removing the left antenna and zeroing the unit.
	www.tscm.com /mlk2055.html (819 words)

	RF Probe
		This R.F. probe allows RF to be measured in the presence of d.c.
		The 1M ohm and 0.001uF capacitor act as a low pass filter to prevent RF entering the Digital Voltmeter.
		An alternative circuit is shown below, again the probe should be in a screened enclosure and the connection to the DVM should be screened lead.
	www.qsl.net /g3pto/probe.html (91 words)

	RF Probe is optimized for tuner-based characterization., Cascade Microtech Inc.
		The Infinity probe's outstanding performance on aluminum pads is achieved by optimizing the key probe factors that affect contact resistance: tip contact area, force applied, tip metallurgy and scrub (horizontal motion).
		The force delivery of the Infinity probe is such that only a small scrub is necessary to break through the aluminum oxide to make contact with the pad.
		With the addition of a high-current model to its line of Infinity probes, Cascade Microtech is again raising the bar for accuracy and repeatability in advanced device characterization and modeling.
	news.thomasnet.com /fullstory/801860/rss (968 words)

	Picoprobe® Model 67A High Performance Microwave Probe
		Because the tips are flexible they minimize circuit damage, increase probe life, and most importantly, provide a reliable individually spring loaded contact for each point.
		Model 67A probes can be mounted on both standard 4.5 inch probe cards and custom-sized probe cards to provide a convenient method for testing wafers at high frequencies using standard automatic or manual probe stations.
		When using DP, EDP, and DS style probes, probe positioning is more difficult due to the increased probing angle since the probe points slide further forward for a given change in the Z axis than our other style probes.
	www.picoprobe.com /67a.html (878 words)

	RF Probe (Site not responding. Last check: )
		I have a high frequency RF probe that is used for up to 6GHz RF module.
		HP Rf probe measures voltage and displays the results in the spectrum as 50 Ohm equivalent power.
		Consider the old problem of loading: RF probe input capacitance (that is the most relevant for HP) is something like 0.7 pF, that means something like 100 Ohm @ 2 GHz.
	www.edaboard.com /ftopic63100.html (522 words)

	The MicroMouse 2.5 and Micro 2.5 AHS/RF Probe
		The MicroMouse 2.5 and Micro 2.5 AHS/RF Probe
		In these variants of the Micro 2.5 system, the probe base and resonators have been modified to allow the use of high gradient strengths for in vivo investigations on small animals, e.g., mice up to 30 g.
		The Micro 2.5 AHS/RF probe is used with smaller plug-in rf-coils, e.g., for mouse brain studies.
	www.bruker-biospin.de /NMR/microimg/micro25mouse.html (260 words)

	5401A RF Voltage Probe (Site not responding. Last check: )
		The probe is of a passive design requiring no power supply or batteries and uses a standard digital multimeter (10 M Ohm input impedance) as an output voltage indicator.
		The probe has been designed for UHF in particular and will indicate rf voltages up to 4 GHz in frequency.
		The probe is lightweight, of a convenient compact size and is electrically extremely robust, working to 100 V peak.
	www.rfprobes.com.au /5401a.htm (141 words)

	PRESS RELEASE Keithley S600DC/RF APT System Integrates DC And RF Measurements For Higher Wafer Test Throughput (Site not responding. Last check: )
		Moreover, RF connections embedded on the test head and per-pin electronics eliminate manual setup and supply unequaled precision and repeatability.
		The probe card loads in the same way that it does for DC operation and the system’s RF capabilities can be accessed through a transparent interface, allowing greater ease of use.
		DC accuracy is not compromised by the addition of RF measurement circuitry, which can be the case with rack-and-stack systems.
	www.marketwire.com /mw/iwpr?id=36670&cat=te (927 words)

	Signatone - RF Microwave Probing
		The WL-1160 RF probe stations are simple, rugged, and economically priced systems that are specially configured for RF/Microwave probing applications.
		The systems can be fitted with either high powered optics for probing small geometries or lower powered optics for probing larger geometries.
		The probe's single unit design is especially desirable for the best possible electrical characteristics.
	www.signatone.com /application/rfmicrowave.html (259 words)

	RF Globalnet: Digital Marketplace for the RF/microwave, and wireless industry
		RF Globalnet is the leading online trade publication for the RF/microwave design industry, serving the needs of engineering professionals since 1996.
		This article is an overview of the most important regulations used for RF approval from around the world...
		RF amplifiers range in frequency from 300 KHz to 3 GHz and power levels exceeding 1000 W. Standard products can be quickly modified to meet your specific requirements.
	www.rfglobalnet.com (0 words)

	rf_probe
		A sensitive RF probe is very useful in a situation where an oscilloscope is not available.
		This design allows measurement of the peak-to peak amplitude of an RF signal in the 100 kHz to the VHF range at up to 50 volts P-P. Volts P-P is approximately 14 volts RMS.
		The upper frequency range limit of the probe is due to the length of the ground wire and the stray junction capacitance of the germanium diodes.
	www.njqrp.org /mbrproj/rf_probe.html (363 words)

	RF Probe
		After talking to Randy Nelson, WB0VHB, Michael surmised that some very sensitive RF detector like a spectrum analyzer would be required to detect as the first stages of the transmitter were tuned.
		You poke the probe into the RF circuitry somewhere on the output side of the transmitter stage you need to tune and tune for the maximum meter reading.
		The early VTVM's often had a special jack for the RF probe to supply it with six volts for the tubes filament.
	www.seits.org /features/rfprobe.htm (883 words)

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