RF Receivers

RF Radio Frequency Receiver Circuits Page 3
RF Receivers: #'s A - B C - D E - K L - Q R - S T - U V - Z
Last Updated on: Friday, March 12, 2010 12:08 PM

Links to electronic circuits, electronic schematics, designs for engineers, hobbyists, students & inventors:

Car Anti-Theft Wireless Alarm - This FM radio-controlled antift alarm can be used with any vehicle having 6to 12-volt DC supply system. The mini VHF, FM transmitter is fitted in vehicle at night when it is parked in car porch or car park. The receiver unit with CXA1019, a single IC-based FM radio module, which is freely available in market at reasonable rate, is kept inside. Receiver is .... (added 10/05)

Car Radio tunes the Amateur Bands - (electronic schematic / circuit added 2/05)

CB receiver - Tendency of catering: + 12V DC; Frequency of reception at AM: ~27MHz ….(circuit design added 08/08)

Circuit Detects Current Pulses - 01/06/94 EDN-Design Ideas / (added 3/03) The pulse detector provides a visible indication of positive and negative current pulses. The pulses amplitudes can vary from20 to150 mA. The pulses durations can range from10 to40 msec, and their repetition rate can span40 to180 pulses/minute.

Class B Series Modulator - (circuit diagram added 05/06/07)

CMOS RF PLL sythesizer - (diagram added 05/06/07)

Compact L Match ATU for Portable use - (electronic schematic / circuit added 2/05)

CompactPCI in Wireless Base Stations - Agilent Application Note (app note added 6/06)

Constant-impedance IF bandpass filters improve circuit performance - Application Note MiniCircuits.com (app note added 08/08/08)

Convert 2m VHF FM PMR transceiver Motorola Radius M110 into an amateur radio - (circuit added 05/06/07)

Crystal Controlled Time Base Generator - (electronic Circuit / Schematic added 10/04)

Crystal Radio - This is a generic circuit, the first true radio receiver in history. Description: Crystal radio requires no power supply to operate because it uses energy from the signals it receives. Performance is like one should expect poor. Nevertheless, .…. (added 10/05)

Crystal Radio (Aaron Cake) - RF Receivers & Receiver Circuits Crystal Radio (added 5/02)

Crystal Radio RF Amplifier - One of the best places to add a transistor to a simple crystal radio is at the front end in the form of an RF amplifier. The circuit below is a simple but effective amplifier which will give surprising performance improvement. This amplifier (electronic Circuit / Schematic added 10/04)

Crystal radio with amplifier - An improved crystal radio with a two-stage audio amplifier. The 2N3904 (or any other general-purpose NPN) acts as a preamplifier while the LM386 boosts the signal high enough to drive low impedance Walkman headphones or perhaps even a small speaker. (added 10/05)

Crystal Set that Requires No Antenna - (electronic design / schematic added 2/05)

CW Zero Beat Indicator - (electronic Circuit / Schematic added 7/03)

Demodulator Schematic/Design - (diagram added 05/06/07)

Designing a Superheterodyne Receiver using an IF Sampling Diversity Chipset - AN-502 Analog Devices Application Notes (app note added 6/06) The AD6600/AD6620 Chipset Simplifies Receiver Design

Digital Automatic Gain Control AGC - (diagram added 05/06/07)

Direction finder system - (schematic / circuit added 05/06/07)

Dual Mode Superhet/Direct Conversion AM receiver for 181.818 kHz Lowfer ATtiny2313, AT90S2313 - This is a description of an experimental AM receiver for VLF. It is crystal controlled to receive 181.818 kHz (more or less) and operates as either a single conversion superhetrodyne or a direct conversion receiver. The bandwidths are expected to be 15 Hz to 3.5 kHz in superhet mode and 15 Hz to 10 kHz in the direct conversion mode. Operation is from a singler...(added 6/07)

RF Receivers: #'s A - B C - D E - K L - Q R - S T - U V - Z