Miniaturization of rectangular microstrip patch antenna using optimized single‐slotted ground plane

Abstract

show the insertion loss of 2.42 and 1.99 dB at the center frequency of 2.43 and 5.70 GHz, respectively, and the bandwidth is slightly reduced.The tapped-line geometry is imported for the second transmission zeros by alternating the coupling section and the tapped-line structure in the suggested dualband BPF using dualmode resonator, as shown in Figure 6. The position of the tapped-line can be defined by the impedance, z R2 , and the value of the inverter. The electrical lengths of y t and y t 0 are calculated as 7 and 46 , respectively. Figure 6 shows the photograph for the fabricated dualband BPF using dual-mode resonator with the coupling and tapped-line geometry for the two transmission zeros and its size is 25.81 Â 28.59 mm 2 . The simulation and measurement results of the dualband BPF using dual-mode resonator are shown in Figure 7. The dualband BPF is simulated with the insertion losses of 1.75 and 1.40 dB at 2.43 and 5.68 GHz, respectively, and measured with the insertion loss of 1.92 and 1.71 dB at the center frequency of 2.42 and 5.65 GHz, respectively. Also, each passband of the suggested dualband BPF has two transmission zeros. CONCLUSIONIn this article, the value of the J-inverter for the dual-mode k g /2 BPF is investigated as functions of the impedance and the electrical length of the open-stub for the dual-mode k g /2 microstrip resonator. As impedance of the open-stub decreases, the dualmode k g /2 BPF has a good out-of-band performance and low value of the inverter. The dualband BPF using dual-mode resonator for 2.45 and 5.8 GHz is suggested by using the second spurious of the SIR structure that has the ratio of the impedance of 0.581. To demonstrate the dualband BPF using dual-mode resonator with two transmission zeros, the coupling structure and tapped-line geometry are used for the J-inverter. By the open-stub of the dual-mode k g /2 resonator, the bandwidth and the frequency of one transmission zero are defined, and the other transmission zero is defined by the open-stub of the tapped-line geometry as a function of the J-inverter. The dualband BPF using dual-mode resonator has been implemented and measured with good performance. These BPFs can be used in wireless communication system.

Microstrip patch antenna miniaturisation techniques: a review

“…In [45], a single slot of 1 mm width was etched out underneath an MPA to reduce its size. A parametric study was carried out by changing the length and position of the slot underneath the patch.…”

Compact Size of Microstrip Patch Antenna With Slotted Design at 900mhz

“…To attain low MHz range of frequencies, antenna size also become too difficult to compact it [2][3][4]. Various methods have been used to compact that antenna size without feed line,that is,  The proposed antenna consist of a rectangular patch And  ground plane with defected ground structure,  The FR4 epoxy dielectric substrate with dielectric permittivity of 4.6, [9]  Thickness 1.6mm.…”

“…This is due to their well-known attractive characteristics such as low weight, low cost, possible conformity, ease of fabrication and simple design principle, the size of the antenna plays a vital role. So, by reducing the size of antenna this helps in the case of mobile or other small communicating devices [1][2], the overall size of the device can also be reduced.…”

Impact of Patch and Slot Antenna

“…Due to the advancement of technology microstrip patch antennas are used in modern printed circuit technology, MMIC design, GPS communication system, Wireless Local Area Network (WLAN), Synthetic Aperture Radar (SAR). Considerable effort has been devoted to the development and improvement of the bandwidth, return loss and reduction of size [3][4][5][6][7][8][9][10][11].…”