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HMC581LP6E - uri=media.digikey
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... The HMC581LP6 & HMC581LP6E are high linearity Dual Down Converter Receiver ICs that operate from 800 - 960 MHz and deliver a +26 dBm input third order intercept point for UMTS & GSM applications. The passive mixer outputs and high dynamic range IF amplifier inputs are positioned so that an external ...
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... Micrel Products are not designed or authorized for use as components in life support appliances, devices or systems where malfunction of a product can reasonably be expected to result in personal injury. Life support devices or systems are devices or systems that (a) are intended for surgical implan ...
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... Eqn. 6 | Solving for x, x = 251 Ω So, what this example proves is that a 251 Ω differential termination should be present on the secondary to reflect a 50 Ω load on the primary. Otherwise, the preceding stage in the signal chain ends up driving a heavier load (~40 Ω). This leads to more gain in the ...
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... two signals are combined to create the Vertical Output of the SFO. On the scope this signal will appear as a ~horizontal line representing the frequencies being swept and their associated amplitudes. The lowest frequency is the left of the screen and the highest frequency in on the right. There shou ...
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... 6.2.5 Frequency Shift Keying (FSK)  It is difficult to modulate the frequency of a laser and this is one of the reasons that FM optical systems are not yet in general use. However, Distributed Bragg Reflector (DBR) lasers are becoming commercially available.  For FSK (or any system using coherent ...
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Heterodyne



Heterodyning is a radio signal processing technique invented in 1901 by Canadian inventor-engineer Reginald Fessenden, in which new frequencies are created by combining or mixing two frequencies. Heterodyning is used to shift one frequency range into another, new one, and is also involved in the processes of modulation and demodulation. The two frequencies are combined in a nonlinear signal-processing device such as a vacuum tube, transistor, or diode, usually called a mixer. In the most common application, two signals at frequencies f1 and f2 are mixed, creating two new signals, one at the sum f1 + f2 of the two frequencies, and the other at the difference f1 − f2. These new frequencies are called heterodynes. Typically only one of the new frequencies is desired, and the other signal is filtered out of the output of the mixer. Heterodynes are related to the phenomenon of ""beats"" in acoustics.A major application of the heterodyne process is in the superheterodyne radio receiver circuit, which is used in virtually all modern radio receivers.
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