A Wideband SMM Antenna with Gap and Dielectric Loadings
A wideband four-arm spiral mode ndcrostrip (SMM) antenna, which is loaded by dielectric and gap, is introduced in this paper. This antenna, which operates at mode 0, uses a shallow back cavity to suppress back radiation. Gaploading and dielectric-loading are used to decrease the voltage standing wave ratio (vswr) of the antenna. A capacitive gap is introduced by a metal ring strip around the spiral, and a nylon disk is attached to the supporting substrate to introduce dielectric-loading. Measured results show that vswr of (he antenna is noticeably lowered by dielectric- and gap-loading (fractional bandwidth of vswr < 2.5 is larger than 77％). The measured radiation patterns agree well with the simulated results, and show relatively good symmetry.
Spiral Mode Microstrip Antenna Gap-boding Dielectric-loading
Zhang Feng Ji Yicai Fang Guangyou Ju Hanji
Key Laboratory of Electromagnetic Radiation and Detection of CAS Institute of Electronics, Chinese Academy of Science (CAS), 100190, China
国际会议
深圳
英文
393-396
2011-03-28（万方平台首次上网日期，不代表论文的发表时间）