quarter-wave transformer


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quarter-wave transformer

[′kwȯrd·ər ‚wāv tranz′fȯr·mər]
(electromagnetism)
A section of transmission line approximately one quarter-wavelength long, used for matching a transmission line to an antenna or load. Also known as quarter-wave matching section.
References in periodicals archive ?
Improved accuracies should be possible if transformers offering wider bandwidths such as multi-section quarter-wave transformers are used, but employing these types of transformers would complicate the system since the analysis would have to include the effects of these various sections in de-embedding the S parameters of the samples.
The design uses two quarter-wave transformers to match the split ports to the common port at the center frequency.
The leakage signal can be further reduced by using a number of chip capacitors and quarter-wave transformers, as shown in Figure 10.
Cohn, "Microwave lens matching by simulated quarter-wave transformers," IRE Transactions on Antennas and Propagation, vol.
(4,5) The power splitters used in the feed network consist of seven quarter-wave transformers; consequently, it is not possible to obtain closed form solutions for the design.