Direct-conversion receiver, the Glossary

Table of Contents

1. 45 relations: Antenna (radio), Automatic gain control, Avionics, Baseband, Carrier wave, Crystal radio, DC bias, Demodulation, Digital signal processing, Engineering tolerance, Envelope detector, Feedback, Frequency, Frequency mixer, Harmonic mixer, Heterodyne, Homodyne detection, Integrated circuit, Intermediate frequency, Local oscillator, Low IF receiver, Low-pass filter, Medical imaging, Mobile phone, Modulation, Neutrodyne, Oscillation, Pager, Phase detector, Phase-locked loop, Product detector, QST, Radio receiver, Radio receiver design, Reflex receiver, Regenerative circuit, Reginald Fessenden, Selectivity (radio), Sideband, Software-defined radio, Superheterodyne receiver, Synchronous detector, Television, Tuned radio frequency receiver, Voltage.

2. Receiver (radio)

Antenna (radio)

In radio engineering, an antenna (American English) or aerial (British English) is the interface between radio waves propagating through space and electric currents moving in metal conductors, used with a transmitter or receiver. Direct-conversion receiver and antenna (radio) are radio electronics.

See Direct-conversion receiver and Antenna (radio)

Automatic gain control

Automatic gain control (AGC) is a closed-loop feedback regulating circuit in an amplifier or chain of amplifiers, the purpose of which is to maintain a suitable signal amplitude at its output, despite variation of the signal amplitude at the input.

See Direct-conversion receiver and Automatic gain control

Avionics

Avionics (a blend of aviation and electronics) are the electronic systems used on aircraft.

See Direct-conversion receiver and Avionics

Baseband

In telecommunications and signal processing, baseband is the range of frequencies occupied by a signal that has not been modulated to higher frequencies.

See Direct-conversion receiver and Baseband

Carrier wave

In telecommunications, a carrier wave, carrier signal, or just carrier, is a periodic waveform (usually sinusoidal) that carries no information that has one or more of its properties modified (the called modulation) by an information-bearing signal (called the message signal or modulation signal) for the purpose of conveying information.

See Direct-conversion receiver and Carrier wave

Crystal radio

A crystal radio receiver, also called a crystal set, is a simple radio receiver, popular in the early days of radio. Direct-conversion receiver and crystal radio are radio electronics and receiver (radio).

See Direct-conversion receiver and Crystal radio

DC bias

In signal processing, when describing a periodic function in the time domain, the DC bias, DC component, DC offset, or DC coefficient is the mean value of the waveform.

See Direct-conversion receiver and DC bias

Demodulation

Demodulation is extracting the original information-bearing signal from a carrier wave. Direct-conversion receiver and Demodulation are radio electronics and receiver (radio).

See Direct-conversion receiver and Demodulation

Digital signal processing

Digital signal processing (DSP) is the use of digital processing, such as by computers or more specialized digital signal processors, to perform a wide variety of signal processing operations.

See Direct-conversion receiver and Digital signal processing

Engineering tolerance

Engineering tolerance is the permissible limit or limits of variation in.

See Direct-conversion receiver and Engineering tolerance

Envelope detector

An envelope detector (sometimes called a peak detector) is an electronic circuit that takes a (relatively) high-frequency signal as input and outputs the envelope of the original signal.

See Direct-conversion receiver and Envelope detector

Feedback

Feedback occurs when outputs of a system are routed back as inputs as part of a chain of cause-and-effect that forms a circuit or loop.

See Direct-conversion receiver and Feedback

Frequency

Frequency (symbol f), most often measured in hertz (symbol: Hz), is the number of occurrences of a repeating event per unit of time.

See Direct-conversion receiver and Frequency

Frequency mixer

In electronics, a mixer, or frequency mixer, is an electrical circuit that creates new frequencies from two signals applied to it. Direct-conversion receiver and frequency mixer are radio electronics.

See Direct-conversion receiver and Frequency mixer

Harmonic mixer

The harmonic mixer and subharmonic mixer are a type of frequency mixer, which is a circuit that changes one signal frequency to another. Direct-conversion receiver and harmonic mixer are radio electronics.

See Direct-conversion receiver and Harmonic mixer

Heterodyne

A heterodyne is a signal frequency that is created by combining or mixing two other frequencies using a signal processing technique called heterodyning, which was invented by Canadian inventor-engineer Reginald Fessenden.

See Direct-conversion receiver and Heterodyne

Homodyne detection

In electrical engineering, homodyne detection is a method of extracting information encoded as modulation of the phase and/or frequency of an oscillating signal, by comparing that signal with a standard oscillation that would be identical to the signal if it carried null information.

See Direct-conversion receiver and Homodyne detection

Integrated circuit

An integrated circuit (IC), also known as a microchip, computer chip, or simply chip, is a small electronic device made up of multiple interconnected electronic components such as transistors, resistors, and capacitors.

See Direct-conversion receiver and Integrated circuit

In communications and electronic engineering, an intermediate frequency (IF) is a frequency to which a carrier wave is shifted as an intermediate step in transmission or reception. Direct-conversion receiver and intermediate frequency are radio electronics.

See Direct-conversion receiver and Intermediate frequency

Local oscillator

In electronics, a local oscillator (LO) is an electronic oscillator used with a mixer to change the frequency of a signal. Direct-conversion receiver and local oscillator are radio electronics.

See Direct-conversion receiver and Local oscillator

Low IF receiver

In a low-IF receiver, the RF signal is mixed down to a non-zero low or moderate intermediate frequency, typically a few megahertz (instead of 33–40 MHz) for TV, and even lower frequencies (typically 120–130 kHz instead of 10.7–10.8 MHz or 13.45 MHz) in the case of FM radio band receivers or (455–470 kHz for) AM (MW/LW/SW) receivers. Direct-conversion receiver and low IF receiver are radio electronics and receiver (radio).

See Direct-conversion receiver and Low IF receiver

Low-pass filter

A low-pass filter is a filter that passes signals with a frequency lower than a selected cutoff frequency and attenuates signals with frequencies higher than the cutoff frequency.

See Direct-conversion receiver and Low-pass filter

Medical imaging

Medical imaging is the technique and process of imaging the interior of a body for clinical analysis and medical intervention, as well as visual representation of the function of some organs or tissues (physiology).

See Direct-conversion receiver and Medical imaging

Mobile phone

A mobile phone or cell phone is a portable telephone that can make and receive calls over a radio frequency link while the user is moving within a telephone service area, as opposed to a fixed-location phone (landline phone).

See Direct-conversion receiver and Mobile phone

Modulation

In electronics and telecommunications, modulation is the process of varying one or more properties of a periodic waveform, called the carrier signal, with a separate signal called the modulation signal that typically contains information to be transmitted.

See Direct-conversion receiver and Modulation

Neutrodyne

The Neutrodyne radio receiver, invented in 1922 by Louis Hazeltine, was a particular type of tuned radio frequency (TRF) receiver, in which the instability-causing inter-electrode capacitance of the triode RF tubes is cancelled out or "neutralized"US Patent No. Direct-conversion receiver and Neutrodyne are radio electronics and receiver (radio).

See Direct-conversion receiver and Neutrodyne

Oscillation

Oscillation is the repetitive or periodic variation, typically in time, of some measure about a central value (often a point of equilibrium) or between two or more different states.

See Direct-conversion receiver and Oscillation

A pager, also known as a beeper or bleeper, is a wireless telecommunications device that receives and displays alphanumeric or voice messages.

See Direct-conversion receiver and Pager

Phase detector

A phase detector or phase comparator is a frequency mixer, analog multiplier or logic circuit that generates a signal which represents the difference in phase between two signal inputs.

See Direct-conversion receiver and Phase detector

Phase-locked loop

A phase-locked loop or phase lock loop (PLL) is a control system that generates an output signal whose phase is fixed relative to the phase of an input signal. Direct-conversion receiver and phase-locked loop are radio electronics.

See Direct-conversion receiver and Phase-locked loop

Product detector

A product detector is a type of demodulator used for AM and SSB signals.

See Direct-conversion receiver and Product detector

QST

QST is a magazine for amateur radio enthusiasts, published by the American Radio Relay League (ARRL).

See Direct-conversion receiver and QST

Radio receiver

In radio communications, a radio receiver, also known as a receiver, a wireless, or simply a radio, is an electronic device that receives radio waves and converts the information carried by them to a usable form. Direct-conversion receiver and radio receiver are receiver (radio).

See Direct-conversion receiver and Radio receiver

Radio receiver design

Radio receiver design includes the electronic design of different components of a radio receiver which processes the radio frequency signal from an antenna in order to produce usable information such as audio. Direct-conversion receiver and radio receiver design are radio electronics and receiver (radio).

See Direct-conversion receiver and Radio receiver design

Reflex receiver

A reflex radio receiver, occasionally called a reflectional receiver, is a radio receiver design in which the same amplifier is used to amplify the high-frequency radio signal (RF) and low-frequency audio (sound) signal (AF). Direct-conversion receiver and reflex receiver are radio electronics and receiver (radio).

See Direct-conversion receiver and Reflex receiver

Regenerative circuit

A regenerative circuit is an amplifier circuit that employs positive feedback (also known as regeneration or reaction). Direct-conversion receiver and regenerative circuit are radio electronics and receiver (radio).

See Direct-conversion receiver and Regenerative circuit

Reginald Fessenden

Reginald Aubrey Fessenden (October 6, 1866 – July 22, 1932) was a Canadian-born American inventor who received hundreds of patents in various fields, most notably ones related to radio and sonar.

See Direct-conversion receiver and Reginald Fessenden

Selectivity (radio)

Selectivity is a measure of the performance of a radio receiver to respond only to the radio signal it is tuned to (such as a radio station) and reject other signals nearby in frequency, such as another broadcast on an adjacent channel.

See Direct-conversion receiver and Selectivity (radio)

Sideband

In radio communications, a sideband is a band of frequencies higher than or lower than the carrier frequency, that are the result of the modulation process.

See Direct-conversion receiver and Sideband

Software-defined radio

Software-defined radio (SDR) is a radio communication system where components that conventionally have been implemented in analog hardware (e.g. mixers, filters, amplifiers, modulators/demodulators, detectors, etc.) are instead implemented by means of software on a computer or embedded system. Direct-conversion receiver and software-defined radio are radio electronics and receiver (radio).

See Direct-conversion receiver and Software-defined radio

Superheterodyne receiver

A superheterodyne receiver, often shortened to superhet, is a type of radio receiver that uses frequency mixing to convert a received signal to a fixed intermediate frequency (IF) which can be more conveniently processed than the original carrier frequency. Direct-conversion receiver and superheterodyne receiver are radio electronics and receiver (radio).

See Direct-conversion receiver and Superheterodyne receiver

Synchronous detector

In electronics, a synchronous detector is a device that recovers information from a modulated signal by mixing the signal with a replica of the unmodulated carrier.

See Direct-conversion receiver and Synchronous detector

Television

Television (TV) is a telecommunication medium for transmitting moving images and sound.

See Direct-conversion receiver and Television

Tuned radio frequency receiver

A tuned radio frequency receiver (or TRF receiver) is a type of radio receiver that is composed of one or more tuned radio frequency (RF) amplifier stages followed by a detector (demodulator) circuit to extract the audio signal and usually an audio frequency amplifier. Direct-conversion receiver and tuned radio frequency receiver are radio electronics and receiver (radio).

See Direct-conversion receiver and Tuned radio frequency receiver

Voltage

Voltage, also known as (electrical) potential difference, electric pressure, or electric tension is the difference in electric potential between two points.

See Direct-conversion receiver and Voltage

See also

Receiver (radio)

• Communications receiver
• Crystal radio
• Demodulation
• Direct-conversion receiver
• Junghans Mega
• List of communications receivers
• Low IF receiver
• Measuring receiver
• Neutrodyne
• Noise blanker
• Plath GmbH
• Preselector
• Radar warning receiver
• Radio receiver
• Radio receiver design
• Radio scanner
• Radio spectrum scope
• Reflex receiver
• Regenerative circuit
• Roofing filter
• S meter
• Shortwave radio receiver
• Software-defined radio
• Superheterodyne receiver
• Table radio
• Transistor radio
• Tuned radio frequency receiver
• Tuner (radio)

References

[1] https://en.wikipedia.org/wiki/Direct-conversion_receiver

Also known as Beat receiver, Direct Conversion device, Direct conversion receiver, Homodyne receiver, Homodyning, Synchrodyne, Zero IF receiver, Zero Intermediate Frequency, Zero intermediate frequency receiver, Zero intermediate-frequency receiver, Zero-IF, Zero-IF receiver, Zero-intermediate-frequency receiver.