[PDF] Top 20 Stacked Circularly Polarized Microstrip Antenna for RFID Applications

... Microstrip antennas are very popular because of their many advantagessuch as low profile, conformable to planar and non-planar surfaces, simple design and lower cost to fabricate using modern printed-circuit ... See full document

... patch antenna can only excite single CP band with a narrow CP bandwidth no more than 5% ...a stacked coin-shaped patch CP antenna fed by a Ring-Shaped Strip [6], a slits loaded square patch ... See full document

... Figure 1 shows the structure of the proposed antenna. It contains a probe-fed microstrip patch and a stacked rectangular slot-ring. Referred to the origin at the center of the patch, the patch is fed ... See full document

... missile applications, where size, weight, cost, performance, ease of installation, and aerodynamic profile are constraints, low-profile antennas may be ...commercial applications, such as mobile radio and ... See full document

... feed circularly polarized irregular hexagonal slotted regular dodecagonal patch antenna has been designed, simulated and experimentally ...cover RFID band with a center frequency of ... See full document

... Designed antenna is fed by two probes which are connected to a hybrid ...are stacked above a primary probe-fed patch to enhance the bandwidth of the ...The antenna is composed of a branch line hybrid ... See full document

... coupled microstrip antenna is a sensitive function of length and width of the microstrip feed ...a microstrip antenna has wide beamwidth in one hemisphere, two back-to-back ... See full document

... As shown in Fig.2 it is the geometrical design of the microstrip patch antenna by using various slots and truncated corner.A good CP bandwidth is also effectively enabled by the conventional technique of ... See full document

... The cross-slot coupled cylindrical DRA with wide impedance & AR bandwidth has been proposed. It was demonstrated that the bandwidth of cross-slot coupled DRA can be increased substantially by stacking two DRs ... See full document

... wideband circularly polarized UHF RFID hand-held reader antenna is presented and ...reduce antenna size and improve impedance matching bandwidth, the original resonant arms are revised ... See full document

... Recent applications of circularly polarized (CP) waves have attracted much attention due to their significance in resisting inclement weather as compared to linearly polarized (LP) ...simplify ... See full document

... patch antenna that can have wideband ...proposed antenna has impedance bandwidth of 60% in the frequency range ...The antenna has axial ratio bandwidth of ...The antenna is useful for wideband ... See full document

... a circularly-polarized wave is ...a circularly- polarized wave is used in the 900 MHz and ...Moreover, circularly-polarized antennas are becoming popular in wireless ... See full document

... To view the experimental results, finally the designed antenna tested by using the antenna simulation software (HFSS). For the antenna design we use the substrate Rogers RT/Duroid 5880. The thickness ... See full document

... wideband circularly polarized (CP) square slot antenna for universal ultra high frequency (UHF) RF identification (RFID) handheld reader applications is proposed, fabricated, and ...The ... See full document

... plane. First, to gain equal magnitude of two orthogonal resonant modes, a Wilkinson divider [9] is introduced with two output ports along x- and y-axes, respectively. However, in Fig. 1(c), the length difference of ... See full document

... Stacking a parasitic patch above the annular ring has been used to improve the impedance matching [10, 11]. However, we have not seen the relative studies on the relationships between the parameters of the parasitic ... See full document

... of microstrip antennas is the ...particular, microstrip ring antennas have become very attractive because for a given frequency, a ring antenna has a smaller patch size as a microstrip square ... See full document

... GPS microstrip antenna that performs tri-band CP ...Such antenna can be actualized using single feed [2] or dual feeds ...CP antenna is simple in structure and easy to fabricate, what’s more, ... See full document

... According to the design procedure described in the above section, an ARMSA for GPS applications is simulated by Ansoft HFSS. To confirm the simulated results, the antenna is fabricated and tested. Figure 5 ... See full document