diplexer: meaning, definition, pronunciation and examples
C2technical
Quick answer
What does “diplexer” mean?
A passive device that allows two transmitters to share a single antenna without interfering with each other, or separates two received signals.
Audio
Pronunciation
Definition
Meaning and Definition
A passive device that allows two transmitters to share a single antenna without interfering with each other, or separates two received signals.
In electronics and telecommunications, a diplexer is a three-port frequency-dependent device that combines or separates signals from two different frequency bands onto a single line, often using filters to prevent interference. Its function is distinct from a duplexer, which manages simultaneous two-way communication on a single channel.
Dialectal Variation
British vs American Usage
Differences
No semantic difference. Spelling and pronunciation are identical.
Connotations
None beyond the technical domain.
Frequency
Identically rare and specialised in both varieties, used only in relevant technical fields.
Grammar
How to Use “diplexer” in a Sentence
The diplexer separates [Signal A] from [Signal B]A diplexer is used to combine [Frequency X] and [Frequency Y]Connect [Device 1] and [Device 2] via a diplexer to [the antenna]Vocabulary
Collocations
Examples
Examples of “diplexer” in a Sentence
adjective
British English
- The diplexer circuit is integrated into the unit.
- A diplexer module was added.
American English
- The diplexer circuit is integrated into the unit.
- We need a diplexer setup.
Usage
Meaning in Context
Business
Not used. Possibly mentioned in procurement for telecoms infrastructure.
Academic
Used in electrical engineering, telecommunications, and physics papers or textbooks on RF systems.
Everyday
Never used in everyday conversation.
Technical
Core term in RF engineering, satellite communications, antenna design, and some audiovisual installation contexts.
Vocabulary
Synonyms of “diplexer”
Strong
Neutral
Weak
Vocabulary
Antonyms of “diplexer”
Watch out
Common Mistakes When Using “diplexer”
- Confusing 'diplexer' with 'duplexer'. A duplexer allows two-way communication on one frequency; a diplexer handles two frequencies on one line.
- Using 'diplexer' in non-technical contexts.
- Pronouncing it as /ˈdɪplɛksə/ (DIP-lexer) instead of /daɪˈplɛksə/ (dy-PLEX-er).
FAQ
Frequently Asked Questions
Not exactly. A simple splitter divides one signal into multiple identical outputs, potentially causing interference. A diplexer uses filters to combine or separate two specific, different frequency bands without them interfering with each other.
Yes, this is a common application. A diplexer can combine a satellite TV signal (one frequency band) and a broadband internet signal (another band) onto a single coaxial cable running into a building, where another diplexer separates them again.
This is a key distinction. A diplexer separates signals by frequency (e.g., 900 MHz and 1800 MHz). A duplexer separates a transmit signal and a receive signal that are on the same frequency or very close frequencies, allowing a single antenna to be used for simultaneous two-way communication (as in a radar or mobile phone).
No, it is a highly specialised technical term used almost exclusively in telecommunications, radio frequency (RF) engineering, and related electronics fields. It is not part of general vocabulary.
A passive device that allows two transmitters to share a single antenna without interfering with each other, or separates two received signals.
Diplexer is usually technical in register.
Diplexer: in British English it is pronounced /daɪˈplɛksə/, and in American English it is pronounced /daɪˈplɛksər/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Think: 'DI-' meaning 'two' and '-PLEX' meaning 'fold' or 'braid'. A diplexer 'braids' two different frequency signals together onto one line.
Conceptual Metaphor
A TRAFFIC MERGE for radio waves: two lanes of traffic (different frequency signals) merging smoothly into a single road (the antenna cable) without colliding.
Practice
Quiz
What is the primary function of a diplexer?