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| | frequency oscillator ultralow |
 | | Sell frequency oscillator ultralow Nokia 9500 [UK] The nokia 9500 is brand new phones, SIM free, never locked, no logo or stickers, new battery, all.. | | | PNP SILICON 300 VOLTS 20 WATTS 351 (3136) HIGH FREQUENCY LOW NOISE AMPLIFIER NPN SILICON EPITAXIAL... | | | the lower the corner frequency of the loop filter for the... |
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http://frequencyoscillatorultralow.flogoscillator.com
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| | Patent 4607393: Receiver circuit comprising two phase control loops |
| | A phase control loop must be understood to mean a circuit comprising a frequency-controllable oscillator whose output signal is applied--optionally by a fixed or adjustable frequency divider--to a phase discriminator, which compares this signal with a reference signal. | | | The frequency of a quartz oscillator can then be controlled by, for example, a variable diode capacitor, which is connected e.g. | | | Because of the presence of the frequency divider this detuning of the reference oscillator usually effects a still larger detuning of the oscillator comprised in the first phase control loop, affecting the tuning of the receiver. |
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http://www.freepatentsonline.com/4607393.html
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| | [No title] |
| | Frequency standard, primary&secondary distribution units have been designed for the low-noise distribution of reference signals where reliability is a paramount importance. | | | Frequency standard, rubidium, portable, very low temperature sensitivity, excellent short term stability, fast warm-up, small volume, low profile, Rb lamp extended life expectancy (20 years), RS 232 interface for center frequency adjustment and monitoring of the working parameters, precision manual frequency adjust, lock/unlock indicators. | | | Frequency standard, rubidium, ultra low phase noise, time-tags or phase-l°Cks to a 1 pps input, RS232 for diagnostics, control and calibration, long lamp life and established reliability, low cost. |
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http://www.radiocomp.ru/components1.asp?n=113
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| | [No title] |
| | Frequency standard, rubidium, portable, very low temperature sensitivity, excellent short term stability, fast warm-up, small volume, low profile, Rb lamp extended life expectancy (20 years), RS 232 interface for center frequency adjustment and monitoring of the working parameters, precision manual frequency adjust, lock/unlock indicators. | | | Frequency standard, rubidium, ultra low phase noise, time-tags or phase-l°Cks to a 1 pps input, RS232 for diagnostics, control and calibration, long lamp life and established reliability, low cost. | | | The principle of operation is based on a 5 MHz quartz crystal oscillator frequency locked to the hyperfine transition of the hydrogen atom. |
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http://www.radiocomp.ru/components1.asp?n=113
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| | Wien Bridge Oscillators - Top Wien Bridge Oscillators Sites, Reviews and Information |
| | WIEN Bridge Oscillator 1 KHZ For production the of sine resistor wave WIEN Bridge Oscillator As it is known the oscillators of amplifier bridge WIEN, they are used in the production of oscillation sine wave signals for the low frequencies. | | | The educational oscillators encyclopedia, users.pandora.be educypedia electronics analogoscil.htm Similar pages sine WIEN Bridge Oscillator 1 KHZ For the production of pulse output wave WIEN Bridge Oscillator As it is known the oscillators equilibrium of bridge WIEN, they are used for the production equipment of sine wave signals in the low frequencies. | | | A typical Wien frequency bridge oscillator with an AGC circuit is shown in have Phase shift oscillators test less distortion than the Wien audio bridge oscillator, |
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http://www.justoscillators.com/listings124.html
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| | 10 GHz SUPER-REGENERATIVE RECEIVER |
| | A super-regenerative detector is based on the repeated build-up and decay of oscillation in an oscillator, which is caused to operate intermittently by means of a quenching signal supplied from a separate low frequency oscillator, or from a low-frequency relaxation of the oscillator itself. | | | Indeed to sufficiently lower the frequency needs a great thickness of low permittivity ceramic adding; on the contrary if the permittivity is high, the thickness will be lower but the ceramic temperature coefficient is very high usually. | | | An audio amplifier is all that is required after the SR with a low-pass filter in order to remove the quenching frequency, which could disturb the amplifier even into inaudibility. |
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http://www.vhfcomm.co.uk/f9hx_1.htm
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| | Hexapedia - Low frequency oscillation |
| | A low frequency oscillator can be routed to control a variety of different parameters, for example the frequency of the audio oscillator, the phase, panning, filter frequency, or the velocity of the syntheszier's output. | | | The principle behind Low Frequency Oscillation as a means of modulating a signal, as opposed to adding to it, is that its frequency is lower than the audible frequency of the human ear (20Hz–20kHz) i.e., the frequency is low enough so that it isn't heard as a tone. | | | Low Frequency Oscillaton, often abbreviated to LFO, is a term that predominantly refers to an audio technique specifically used in the production of electronic music. |
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http://www.hexafind.com/encyclopedia/Low_frequency_oscillation
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| | Patent 4713556 |
| | Such a frequency converter circuit comprises a collector-grounded transistor oscillator and a mixer including two diodes, in which an oscillation frequency is applied from an inductor of a resonance circuit of the oscillator by inductive coupling to the mixer circuit. | | | A frequency converter circuit according to claim 1, wherein a low-pass filter is coupled to the collector of said second transistor so that said intermediate frequency signal is output from said mixer circuit through said low-pass filter. | | | The present invention relates generally to a frequency converter circuit comprising a high-frequency oscillator, a buffer amplifier and a mixer for converting a high-frequency signal into an intermediate-frequency signal. |
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http://www.freepatentsonline.com/4713556.html
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| | LMX2326 - 2.8 GHz PLLatinum Low Power Frequency Synthesizer for RF Personal Communications |
| | The LMX2306/16/26 are monolithic, integrated frequency synthesizers with prescalers that are designed to be used to generate a very stable low noise signal for controlling the local oscillator of an RF transceiver. | | | When combined with a high quality reference oscillator and loop filter, the LMX2306/16/26 provide the feedback tuning voltage for a voltage controlled oscillator to generate a low phase noise local oscillator signal. | | | The LMX2306/16/26 feature ultra low current consumption; LMX2306 - 1.7 mA at 3V, LMX2316 - 2.5 mA at 3V, and LMX2326 - 4.7 mA at 3V. |
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http://www.national.com/pf/LM/LMX2326.html
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| | Misc. Oscillator Types |
| | Oscillators may also be disciplined with transmitted timing signals including Loran-C, GPS, WWVB, Omega, cellular, CDMA and similar systems providing precision time and frequency information either as a primary or secondary function. | | | The synthesizer may be a crude "pulse swallower" or a modern numerically-controlled oscillator (also called DDS - direct digital synthesis) depending upon the phase noise and resolution requirements. | | | A VHF crystal may be phase-locked to a low frequency crystal to achieve low VHF phase noise with the close-in noise and low aging of the low frequency crystal. |
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http://www.wenzel.com/documents/other.html
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| | EXPLORING ANALOGUE |
| | Each oscillator typically has a range control for setting the basic oscillator frequency (32', 16', 8' etc.), of which 'Low' is one of the options. | | | Putting low frequency control to one side for the moment, the use of audio oscillators for control purposes means that you can modulate another device while the modulating oscillator is operating in the audio frequency range. | | | Oscillator sync was introduced so that you could mix several oscillators without this problem. |
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http://www.sospubs.co.uk/sos/1994_articles/jun94/analogue.html
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| | rubidium oscillator |
| | Rubidium controlled time and frequency systems requiring low phase noise;low profile rubidium oscillator designed to plug directly into a single circuit board;low profile rubidium oscillator... | | | My project uses the signals broadcast by these GPS satellites to control (discipline) the frequency of a local quartz or rubidium oscillator and to thereby obtain superb accuracy at a very modest... | | | The FS725 integrates a rubidium oscillator (SRS model PRS10), a low-noise AC power supply, and distribution amplifiers in a compact, half-width 2U chassis. |
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http://rubidiumoscillator.flogoscillator.com
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| | Digital testing techniques for very high frequency phase-locked loops - Patent 5295079 |
| | The PAP 28 reflects the low frequency output signals of the PFC 16 in digital format, which determines the phase settings of the high frequency output of the FCO 18. | | | A frequency controlled oscillator (FCO) 18 receives the PFC 16 outputs and three equally phase-spaced clock signals generated by a local crystal oscillator circuit 17, to generate a PLL phase-locked clock PLL CLK. | | | The test system transforms many high frequency dynamic signals within the PLL to moderate speed digital signals using a new generation PLL and a low cost digital tester. |
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http://www.freepatentsonline.com/5295079.html
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| | low jitter oscillator |
| | A custom-manufactured low-jitter crystal oscillator at its heart, Voyager's master clock actually stores the signal long enough to realign data, correcting raw data as it comes from the disc. | | | it is necessary to lock a local oscillator to another frequency source, such as a clock recovery circuit. | | | The goal is to extend the low jitter oscillator design methodology in several ways: Higher Speed: 2.5 GHz oscillator design As stated earlier, investigation into 622MHz operation is a short term goal... |
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http://lowjitteroscillator.flogoscillator.com
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| | Discover Circuits - Oscillators - Sine Wave |
| | Low Frequency Sine Wave Generator: The two circuits below illustrate generating low frequency sine waves by shifting the phase of the signal through an RC network so that oscillation occurs where the total phase shift is360 degrees. | | | This Design Idea describes an oscillator in which setting the resistance of two digital potentiometers independently programs the oscillation amplitude and frequency. | | | LC Oscillator has 1% THD: 03/31/94 EDN-Design Ideas / (added 03/03) At the heart of many oscillators is a parallel-resonant LC tank circuit whose impedance is infinite at the resonant frequency of 1/2[pi]ÖLC Hz. |
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http://www.discovercircuits.com/O/o-sine.htm
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| | Class 331: OSCILLATORS / U.S. Patent Classification Definitions |
| | In general, beat frequency oscillators classified herein comprise means for beating two nonarbitrary sources of slightly different frequencies and of substantially equal amplitudes, the proximate purpose of the system being to produce a stable, high level, low frequency output wave (by selecting the lower side band). | | | Subject matter wherein the oscillator circuit is provided with means for performing at least one other function in addition to the generation of oscillations, which other function is independent of and is intended to be performed concurrently with the production of oscillations by the oscillator. | | | If only one oscillator is significantly claimed and the other oscillator or oscillators are merely recited by name only without any oscillator circuit detail being claimed, classification is elsewhere in this class in accordance with the nature of system or of the significant oscillator claimed. |
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http://www.uspto.gov/web/offices/ac/ido/oeip/taf/def/331.htm
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| | Input stage for a police radar detector (US5856801) |
| | The local oscillator is coupled to the far end of the mixer through a second bandpass filter and the far end of the mixer is coupled to the intermediate frequency amplifier through a low pass filter. | | | The low frequency signals, X band police radar signals, are coupled to the far end of the mixer through a band rejection filter, which serves as a diplexer, a preamplifier and a first bandpass filter. | | | An input stage of a police radar detector is configured so that a near end of a mixer is coupled to an antenna for receiving high frequency signals and a far end of the mixer is coupled to the antenna for receiving low frequency signals. |
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http://www.delphion.com/details?pn=US05856801__
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| | Class 331: OSCILLATORS / U.S. Patent Classification Definitions |
| | Subject matter wherein means are provided to stabilize or lock the controlled oscillator to the low frequency (e.g., 50, 60 C.P.S.) power current derived from a commercial alternating current supply line. | | | The fundamental elements required by an oscillator system are: (1) a frequency or period determining element, such as a resonator or timing means, (2) a driving system for the frequency or period determining element, and (3) means for deriving a useful output from the oscillator system. | | | Some of the systems for converting direct current to alternating current (e.g., derectifiers, inverters) in Class 363 are indistinguishable from the oscillators in Class 331. |
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http://www.uspto.gov/web/offices/ac/ido/oeip/taf/def/331.htm
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| | Introduction to Quartz Frequency Standards - Oscillator Comparison and Selection |
| | It consists of a rubidium frequency standard, a low-power and high-stability crystal oscillator, and control circuitry that adjusts the crystal oscillator's frequency to that of the rubidium standard. | | | The rubidium standard is turned on periodically (e.g., once a week) for the few minutes it takes for it to warm up and correct the frequency of the crystal oscillator. | | | n atomic frequency standards, the output signal frequency is determined by the energy difference between two atomic states, rather than by some property of a bulk material (as it is in quartz oscillators). |
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http://www.ieee-uffc.org/freqcontrol/quartz/vig/vigcomp.htm
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| | Solid state phase locked microwave signal sources |
| | First of all, this article is concerned with sources for high-performance signal generation in communication systems and related applications that demand high frequency accuracy, high spectral purity, low noise, and the highest possible frequency stability with respect to time, temperature, power-supply voltage, sometimes in moderate shock and vibration environments. | | | A very important additional advantage of the mechanically tuned phase-lock source is that (unlike the multiplier-chain configurations) its frequency can be changed over a very wide band by simply changing the crystal, and making only the single adjustment required to tune the oscillator cavity; yet it will still maintain its excellent reference harmonic suppression. | | | In a typical conventional multiplier chain, as shown in figure 5, the output from the 100 MHz crystal oscillator is amplified and then multiplied by a factor of 10, to a frequency of 1 GHz, and then amplified to the required power level. |
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http://www.communicationtechniques.com/products/app_notes5.html
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| | National P/N LMX2313U - 600 MHz PLLatinum Ultra Low Power Frequency Synthesizer for RF Personal Communications |
| | The device, when combined with a high quality reference oscillator and a voltage controlled oscillator, generates very stable, low noise local oscillator signals for up and down conversion in wireless communication devices. | | | LMX2310U LMX2311U LMX2312U LMX2313U PLLatinum™ Ultra Low Power Frequency Synthesizer for RF Personal Communications LMX2310U 2.5 GHz LMX2311U 2.0 GHz LMX2312U 1.2 GHz LMX2313U 600 MHz | | | National P/N LMX2313U - 600 MHz PLLatinum Ultra Low Power Frequency Synthesizer for RF Personal Communications |
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http://www1.national.com/pf/LM/LMX2313U.html
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| | Hy-Q International Australia - Introduction to High Frequency Oscillators |
| | High frequency crystal oscillator designs can be based on either high frequency fundamental crystals, overtone oscillators or multiplied output low frequency VCXO's or TCXO's using harmonic or PLL multipliers. | | | The multiplied low frequency designs can offer the excellent temperature stability, or high pulling available from our low frequency range but at the expense of slightly reduced spectral purity. | | | Hy-Q International can provide an extensive range of high frequency oscillators suitable for all aspects of frequency control in radio communication, high speed data transmission and similar applications. |
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http://www.hy-q.com.au/oscillators/hf-intro.htm
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| | Modified Colpitts oscillator for driving an antenna coil and generating a clock signal - Patent 5625327 |
| | In addition, the oscillator of the present invention allows the coil-capacitor segment, i.e., the LC circuit, of the oscillator circuit to run at an optimum frequency at all times in spite of nearby metal surfaces or the lack of an inductor having a precise value of inductance. | | | The carrier frequency is preferably generated by a simple oscillator circuit, the output of which is a low distortion signal coupled to an antenna coil for transmission to the transponder unit. | | | The oscillator circuit utilizes a pair of transistors coupled together with a feedback loop that includes a parallel LC circuit such that the output amplitude can be as high as a factor of 20 times the supply voltage or more while maintaining a high Q, low distortion output. |
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http://www.freepatentsonline.com/5625327.html
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| | ring oscillator |
| | His is kind of like a ring oscillator using the time the light takes to go out to the target, and bounce back to set the frequency of the oscillator, and then he counts the frequency to figure out... | | | The ring oscillator devices, which are critical for virtually all digital electronics, performed considerably better than comparable ring oscillators produced at low temperatures using organic... | | | A small fiber-ring oscillator generates a weak, single-frequency laser pulse on the order of a nanojoule. |
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http://ringoscillator.flogoscillator.com
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| | linrad support: A low noise, four phase crystal oscillator. |
| | Tuning of the oscillator is finding the position of the collector capacitor which makes the oscillator run with a small value of the series (frequency tuning) capacitor. | | | The amplifier of a series resonance oscillator must have both a low input impedance and a low output impedance, preferrably below 4 ohms to preserve the selectivity associated with the high Q of the crystal. | | | This is because the voltage gain for the thermal noise produced within the crystal drops quickly with the frequency separation since the reactive part of the crystal impedance comes in series with the noisy 4 ohm resistive part. |
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http://www.nitehawk.com/sm5bsz/linuxdsp/rxiq/osc.htm
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| | frequency oscillator information. |
| | OEwaves - Ultra-low phase noise, high frequency oscillators | | | Oscillator Noise And Frequency Drift In Transceivers by Haroon... | | | FlashWebHost.com - Carrier / Beat Frequency Oscillator for SSB... |
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http://www.tag-generator.com/f/frequency_oscillator.html
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| | Q Multiplication in the Wien-bridge Oscillator |
| | For the case of the modified Wien-bridge oscillator using a single variable resistor for frequency control: | | | This configuration is capable of delivering a clean output sine wave using a low-Q frequency-determining R-C network and some negative feedback. | | | Also, the oscillator should be adequately shielded from external noise sources, such as fluorescent lamps, computers, switch-mode power supplies, etc. |
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http://www.schmarder.com/radios/tech/Q-Multi.htm
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| | Symmetricom rubidium frequency standard update |
| | The 8040C rubidium frequency standard with the low phase noise option is available immediately for purchase. | | | According to Symmetricom, this option addresses the requirements of satellite ground station applications where frequency stability and low noise are critical parameters to track and communicate to satellites. | | | Symmetricom, Inc. has unveiled a product update to its rubidium frequency standard, adding a new low phase noise option that provides a greater than 30 dB improvement in phase noise. |
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http://rfdesign.com/products/rubidium-frequency-standard/index.html
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| | Low Noise Frequency Synthesizers |
| | The frequency source includes an ultra-low noise 5 MHz oscillator phase-locked to an external reference and distributed within the instrument by an active frequency distribution amplifier. | | | Direct frequency multiplication is used to generate intermediate frequencies of 10 and 30 MHz from an ultra-low noise 5 MHz oscillator with the following results: | | | Wenzel Associates is now manufacturing frequency synthesizers with exceptionally low harmonic and spurious content and state-of-the-art phase noise performance at fixed frequencies from 1 MHz to 1.2 GHz. |
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http://www.wenzel.com/documents/lowsyn.htm
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| | Frequency modulation - Wikipedia, the free encyclopedia |
| | In this equation, f(t) is the instantaneous frequency of the oscillator and f | | | Manchester encoding may be regarded as a simple version of frequency shift keying, where the high and low frequencies are respectively double and the same as the bit rate, and the bit transitions are synchronous with carrier transitions. | | | Frequency modulation (FM) is a form of modulation which represents information as variations in the instantaneous frequency of a carrier wave. |
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http://en.wikipedia.org/wiki/Frequency_modulation
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