axial ratio


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axial ratio

[′ak·sē·əl ′rā·shō]
(crystallography)
The ratio obtained by comparing the length of a crystallographic axis with one of the lateral axes taken as unity.
(electronics)
The ratio of the major axis to the minor axis of the polarization ellipse of a waveguide. Also known as ellipticity.
References in periodicals archive ?
5 dBic) 1dB axial ratio family of 3 antennas for FCC, ETSI & Japanese UHF frequency range, the MT-242043 is the first of the new 1ft (9 dBic) family.
TEL AVIV, Israel -- MTI Wireless Edge, a leading developer of flat panel antennas for RFID and Fixed Wireless applications today announced the addition of their new Low Axial Ratio RFID reader antenna range to their large portfolio of, high performance and cost competitive RFID antennas.
Critical topics that readers would otherwise have to search a number of resources to find are included: RF safety chapter provides a concise presentation of FCC recommendations, including application examples, and prepares readers to work with real-world propagating systems; Antenna chapter provides an introduction to a wide variety of antennas and techniques for antenna analysis, including a detailed treatment of antenna polarization and axial ratio; the chapter contains a set of curves that permit readers to estimate polarization loss due to axial ratio mismatch between transmitting and receiving antennas without performing detailed calculations.