Stacked patch antenna array on cylindrical surface

The wideband microstrip antenna with capacitive feed with the low level of the VSWR

“…As a result, the operating frequency band of these antennas is small and, basically, does not exceed a few percent. There are microstrip antennas, whose operating frequency band by level of the VSWR ≤ 2 is 10 % or more [1][2][3][4][5]. However, by level of the VSWR ≤ 1.2 (|S(1,1)| ≤ −20 dB) their operating frequency band is usually less than 10 %.…”

Field polarization transformation by bodies with negative refractive index

“…High efficiency of the suggested approach was verified by patch antennas radiation research [8] and in the mobile phone antennas radiation near a user head model [9]. The used Green's functions representation is correct as for positive and for negative permittivities and permeabilities.…”