superheterodyne receiver
E169
The superheterodyne receiver is a radio receiver architecture that improves selectivity and sensitivity by converting incoming radio signals to a fixed intermediate frequency before final detection.
All labels observed (1)
| Label | Occurrences |
|---|---|
| superheterodyne receiver canonical | 1 |
Statements (48)
| Predicate | Object |
|---|---|
| instanceOf |
heterodyne receiver
ⓘ
radio receiver architecture ⓘ |
| canHave |
double conversion architecture
ⓘ
single conversion architecture ⓘ triple conversion architecture ⓘ |
| convertsFrom | radio frequency ⓘ |
| convertsTo |
fixed intermediate frequency
ⓘ
intermediate frequency ⓘ |
| enables |
high gain at intermediate frequency
ⓘ
narrow bandwidth filtering ⓘ use of fixed-tuned IF filters ⓘ |
| hasAbbreviation | superhet ⓘ |
| hasAdvantage |
better selectivity than tuned radio frequency receivers
ⓘ
better sensitivity than tuned radio frequency receivers ⓘ stable performance over wide tuning range ⓘ |
| hasDisadvantage |
image frequency interference
ⓘ
spurious responses ⓘ |
| improves |
selectivity
ⓘ
sensitivity ⓘ |
| isStandardArchitectureFor | modern radio receivers ⓘ |
| isUsedIn |
AM broadcast receivers
ⓘ
FM broadcast receivers ⓘ cellular radio receivers ⓘ communications receivers ⓘ radar receivers ⓘ satellite receivers ⓘ shortwave receivers ⓘ television receivers ⓘ two-way radio equipment ⓘ |
| keyConcept |
heterodyning
ⓘ
image frequency ⓘ intermediate frequency ⓘ selectivity ⓘ sensitivity ⓘ |
| operatesOn | radio frequency signals ⓘ |
| requires |
frequency-stable local oscillator
ⓘ
good front-end filtering ⓘ |
| uses | frequency conversion ⓘ |
| usesComponent |
RF amplifier
ⓘ
audio frequency amplifier ⓘ detector ⓘ intermediate frequency amplifier ⓘ local oscillator ⓘ mixer ⓘ tuned circuits ⓘ |
| wasDevelopedDuring | World War I ⓘ |
| wasInventedBy |
Edwin H. Armstrong
ⓘ
surface form:
Edwin Howard Armstrong
|
| wasInventedInYear | 1918 ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.