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Topic: Insertion loss vs frequency characteristic

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	Crystal and frequency control glossary - I
		Nonlinear distortion characterized by the appearance, in the output of a device, of frequencies that are linear combinations of the fundamental frequencies and all harmonics present in the input signals.
		A frequency to which a carrier frequency is shifted as an intermediate step in transmission or reception.
		The frequency vs. temperature curve is a sine with the inflection temperature at ~ +78°C. This crystal operates in the thickness shear mode.
	www.icmfg.com /crystalglossaryi.html (676 words)

	SSB Filter Group Delay
		This is a plot of the previous filter's passband insertion loss in dB and group delay, also tested by Harold, and plotted by a VNA group delay test program.
		The group delay below, being the derivative of phase with respect to frequency, also quantifies the degree of linearity of the filter's phase vs. frequency characteristic in passband, as seen in the above plot.
		These group delay 'ears' represent a loss in fidelity that can be particularly troublesome in narrow CW and data filters.
	n2pk.com /TestResult5.html (155 words)

	Quartz Crystals and Oscillators, Commercial Space and Industrial Applications
		The frequency vs. temperature curve is a sine with the inflection temperature at ~ +52"C. This crystal operates in the thickness shear mode.
		Nonlinear distortion characterized by the appearance, in the output of a device, of frequencies that are linear combinations of the fundamental frequencies and all harmonics present in the input signals.
		The frequency vs. temperature curve is a sine with the inflection temperature at ~ +78°C. This crystal operates in the thickness shear mode.
	www.frequencymanagement.com /glossary.html (9653 words)

	Integrated Microwave, filters, bandpass, band reject, lowpass, highpass, diplexers, multiplexers, ceramic, wireless, ...
		Crossover frequency: The frequency at which two adjacent channels (the upper frequency of the lower channel and the lower frequency of the upper channel) are of equal amplitude
		Crossover loss: The loss that occurs at the crossover frequency.
		Chebyshev and elliptic function filters ideally have equal-ripple characteristic; i.e., differences in peaks and valleys of the amplitude response in the passband are always the same.
	www.imcsd.com /filter_technology.htm (1959 words)

	Equalizer cavity with independent amplitude control - Patent 4437073
		As simple and as useful as such a component appears to be, it has been found in practice that it is impossible to precisely estimate in advance the time delay vs. frequency characteristic to be equalized and then to specifically design a cavity and its coupling mechanism to provide this characteristic.
		The group delay of both filter and equalizer devices are related to their insertion loss in such a manner that when one is corrected, the other is automatically compensated.
		2, there is shown the measured performance characteristics for an equalizer cavity apparatus in which independent adjustment of loss is achieved without a significant effect on either the frequency or magnitude of the delay of the cavity.
	www.freepatentsonline.com /4437073.html (1703 words)

	3. ACOUSTICAL CONSIDERATIONS
		Frequency is defined as the number of cycles of repetition per second, or the number of wavelengths that have passed by a stationary point in one second.
		Atmospheric absorption: Atmospheric absorption is a function of the frequency of the sound, the temperature, the humidity, and the atmospheric pressure between the source and the receiver.
		That is, a single barrier with an insertion loss of 10 dB(A) may only realize an effective reduction of 4 to 8 dB(A) if another barrier is placed parallel to it on the opposite side of the highway.
	www.fhwa.dot.gov /ENVIRONMENT/noise/3.htm (5247 words)

	For network cable management and more cable management solutions, choose ICC.com
		Absorption – The loss of light energy in an optical fiber, resulting from conversion of optical power into heat and caused primarily by impurities and defects in the glass.
		Important characteristic in networking transmission to assure that signal sent down a twisted pair is stronger at the receiving end of the cable than are any interference signals imposed on that same pair by crosstalk from other pairs.
		Insertion Loss – The difference in the amount of power received before and after something is inserted into the circuit.
	icc.com /glossary.aspx (9300 words)

	RF Measurement Basics for Non-RF Test Engineers
		The expression for the characteristic impedance of a transmission line depends on the geometry of the conductors, the properties of the conductors, and the insulator holding or separating the conductors.
		For RF applications, the characteristic impedance of the transmission lines and the input and output impedances of components are designed to be 50 or 75 Ω.
		At RF frequencies, the importance of mismatch means that a good connection not only has the conductors in contact, but also that the connectors are properly torqued together.
	www.evaluationengineering.com /archive/articles/1106/1106rf_measurement.asp (3106 words)

	Olympic Technology - CCTV & Security Glossary
		This loss is effectively reduced by very thin coatings on the lens surfaces.
		It consists of a hollow metallic shield in which one or more center conductors are put in place and isolated from one another and from the shield.
		Insertion loss - The signal strength loss that occurs when a piece of equipment is inserted into a line.
	www.oly-tech.com /cctvglossary.html (3307 words)

	RTS® Digital Matrix Glossary
		Frequency response, and distortion are constant and independent of the circuitry (either it works or doesn't, the circuitry doesn't change the frequency response or distortion).
		The undesired signals have a frequency or frequencies that are related to the input signal.
		Its frequency is within that of human hearing and it is at the frequency of the power line or its harmonics.
	www.rtsintercoms.com /glossary.php (11924 words)

	The Syndromic Child (May,1996)
		Congenital hearing loss is commonly seen with microtia, because of the often associated external canal atresia.
		Acquired hearing loss is due to eustachian tube dysfunction, probably caused by palatopharyngeal incompetence (70% of Treacher Collins have cleft palate or related problem).
		Facies are characteristic, and must include ocular proptosis (due to shallow orbits).2 Other common features are craniosynostosis (usually brachycephaly), maxillary hypoplasia, crossbite with crowding of maxillary teeth and lateral palatal swellings.
	www.utmb.edu /otoref/Grnds/syndrome.htm (4503 words)

	IM Intermark USA -Technical Considerations on EMC-
		Actually, every frequency source could be a potential source of interference and all interference signals can be coupled to the power line and conducted to the power mains, thus creating problems to other equipments connected close to the signal source equipment.
		If insertion loss needs to be increased at lower frequencies, the number of turns should be increased as common mode choke so that damping may apply only without any influence upon signals.
		When ferrite cores are used to eliminate high frequency noises on a DC line such as a power supply line, the supply line as well as the grounding return line can be inserted through the ferrite core.
	www.intermark-usa.com /products/technical_considerations.shtml (1491 words)

	Paul Bothner Music - The Musical Instrument Specialists - Articles - Glossary of Audio Terms
		It is a plot of electrical output (in decibels) vs. frequency (in Hertz).
		INSERTION LOSS The ratio of the power delivered to that part of a transmission system which will follow a transducer, to the power delivered to that same part of the system after the insertion of the transducer.
		SUBHARMONIC A sinusoidal quantity having a frequency which is an integral submultiple of the fundamental frequency of a periodic quantity from which it is derived.
	www.bothner.co.za /articles/glossary.shtml (2758 words)

	Xtreme Recall Helmet Cam Systems – In-Car Mounts & Helmet Camera Accessories
		Aperture Correction - Compensation for the loss in sharpness of detail because of the finite dimensions of the image elements or the dot-pitch of the monitor.
		Frequency Interlace - The method by which color and fl and white sideband signals are interwoven within the same channel bandwidth.
		The number of picture elements (pixels) in a complete picture, and their geometric characteristics of vertical height and horizontal width, provide information on the total amount of detail which the raster can display and on the sharpness of the detail, respectively.
	www.xtremerecall.com /glossary_IN.htm (5876 words)

	Wurth Elektronik Midcom, Inc.
		Because the two frequency spectrums do not overlap, it follows that both data and voice can be present at the same time on a single pair of copper wire.
		At higher frequencies, the series and shunt reactance becomes significant and impedes energy transferred to the load as graphically illustrated in figure 2.
		In order to measure the true characteristic output of a low pass POTS filter, it is paramount that the correct test methods are employed.
	www.midcom-inc.com /Tech/tn89.asp (374 words)

	Transmission Line Concepts
		Return loss is a measure in dB of the ratio of power in the incident wave to that in the reflected wave, and as defined above always has a positive value.
		Transmission lines should have their insertion loss (attenuation) measured in lieu of VSWR, but VSWR measurements of transmission lines are still important because connection problems usually show up as VSWR spikes.
		This was a time consuming process since the measurement was at a single frequency and mechanical adjustments had to be made to minimize coupling into circuits.
	www.ab4oj.com /atu/vswr.html (632 words)

	High-Isolation W-band InP-based PIN Diode Monolithic Integrated Switches (Site not responding. Last check: )
		However high-isolation properties are also accompanied by a larger insertion loss, due to the presence of the second diode in the signal path.
		The transition losses were estimated by comparing the single- and double-diode switch characteristics, since these two topologies employ identical diode and biasing cells, and were found to be 0.4dB.
		The power handling characteristics of the InGaAs PIN diodes were analyzed and allowed to determine the input power levels at which the diode transfer characteristics are compressed by 1dB.
	www.eecs.umich.edu /dp-group/PIN/cornell97 (2046 words)

	RF Coaxial Cables - Madison Cable - Tyco Electronics
		At a frequency of 1MHz, three skin depths is 0.0078" (95% of the current is within three skin depths of the surface) and at 10GHz three skin depths is 0.00078".
		The combination of these four types of losses are referred to as the insertion loss of a transmission line system.
		The characteristic impedance of a lossless cable is related to the inductance per unit length, L, and the capacitance per unit length, C, as follows:
	www.madisoncable.com /RFCoaxialCables.asp (822 words)

	Glossary
		The reactance of a capacitor decreases as frequency increases.
		Insertion loss - refers to the losses resulting from the insertion of a cable, connector or other device into an electrical system.
		Another definition is that it is "the period frequency displacement of the signal from its ideal location." Among the causes of jitter are electromagnetic interference (EMI) and crosstalk with other signals.
	www.joysignal.com /glossary.htm (4378 words)

	COMLAB - Computerised Laboratory in Science&Technology Teaching
		The intensity of the harmonic plane wave is proportional to the square of the amplitude and to the square of the frequency.
		Calculate the insertion loss of a hood with an average absorption coefficient 0.3 and a transmission coefficient 0.001.
		The frequency variation is therefore 4 Hz or 1 percent (0.5 percent higher and 0.5 percent lower) relative to the actual frequency of the loudspeaker.
	www.e-prolab.com /comlab/overview/sttop-wav-snd.htm (9576 words)

	Meritec: Concept to Connection
		As an example, 3dB loss is equivalent to 30% loss of voltage and 6dB loss is equivalent to 50% loss of voltage.
		The reactance of a capacitor decreases as frequency increases.
		These losses are the result of part of the signal being sent back to the source.
	www.meritec.com /glossary.html (4387 words)

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