Coplanar‐waveguide‐fed uniplanar antenna using a broadband balun

Slot line FED dipole antenna for wide band applications

“…Field distribution in Ref. [5] show a half-wave variation along the length of the strip at 1.7 GHz (Figure 4). From the above observations, it can be seen that the slot line fed dipole exhibits almost similar characteristics as that of an ordinary dipole.…”

“…However, these structures have gradual cut-off response that only by increasing the number of section, the filter rejection characteristic can be improved, and this improving method increases the passband insertion loss and filter physical size. Recently, some new methods such as DGS [3,4], complementary split ring resonators (CSRR) [5], and others are applied to design LPFs, however, the filter performances such as bandwidth of stopband and sharp attenuation responses are enhanced by increasing cells, which lead to larger size and more transmission losses. In our report, new microstrip LPF using single patch resonator with fractal-shaped defection is proposed for the first time to implement nicer performances of transmission zero to get sharp attenuation, ultra-wide stopband and low insertion loss, which has advantages of simple and compact circuit topology, miniaturization, etc.…”

“…Recently, uniplanar dipoles have received wide attention because of advantages of easy fabrication and integration of active circuit elements [4,5]. Most of the reported designs have either a double layer structure or a balun configuration [6].…”

Wideband microstrip‐fed printed bow‐tie antenna for phased‐array systems

“…Moreover, unbalanced radiation patterns are noticed in [2] and omnidirectional patterns are obtained in [3]. Other researchers use coplanar waveguide (CPW)-to-CPS transitions to feed printed dipole and bow-tie antennas [4]. However, these two antennas are designed for 100⍀, not 50⍀, characteristic impedance, in addition to having an omnidirectional pattern.…”

Slotline‐fed ultracompact antenna for wide band applications

“…In modern wireless communication system, compact multiband or wideband antennas are in great demand. Recently, dipoles that are printed on single plane have received wide attention because of the advantages of easy fabrication and integration of active MMIC elements [1, 2]. Most of the reported designs of wideband enhanced gain dipoles have either a double layer structure or a balun configuration [3].…”