科研之友
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摘要
A compact bandwidth-broadened and isolation-improved MIMO antenna appropriate for LTE communication employs a small 0.034 lambda(g) long radiator designed to have an in-phase and dense electric field flux at the zeroth order resonance (ZOR) of 2.5 GHz for circumventing the problem of degraded antenna gain and four thin FR4 layers to create closely located resonances for expanding the bandwidth: The radiator is used in the design of two antennas on the top-edge of a MIMO handset with a total length equal to 0.108 lambda(g) (much less than a quarter-wavelength). The two radiating elements are separated by just 10 mm and a folded line between them is optimized to obtain isolation above 10 dB over the 250 MHz bandwidth. The design is validated with a full-wave simulation that is in good agreement with measurements of the fabricated prototype, which uses a low cost FR4 process versus ceramic-based chips or LTCC.
- 出版日期2014-9
- 单位哈尔滨工业大学
