RECEIVER_SCANNER_PREAMP_USING_MAR_1_MMIC

Published:2009/6/18 1:50:00 Author:May | From:SeekIC

The low-cost Mini-Circuits MAR-X series of chips offer the RF builder a real advantage, with their inherent 50-Ω input and output impedances (needed for RF systems). An MAR-l-based re-ceiver/scanner preamplifier is shown. C1 and C2 are chip capacitors. Use 0.01 μF for HF, 0.001 for VHF, and 100 pF for above 100 MHz, depending on the low-frequency limit that you desire. C3 can be a ceramic disc of 0.01 μF or 0.001 μF, de-pending on frequency range. L1 is an RF choke that is suitable for the frequency range that you desire (0.1 to 10 μH).



Reprinted Url Of This Article:
http://www.seekic.com/circuit_diagram/Audio_Circuit/Pre_Amplifier/RECEIVER_SCANNER_PREAMP_USING_MAR_1_MMIC.html

Print this Page | Comments | Reading(3)