A novel design of multiband printed anchor‐shaped slot antenna

Abstract

In this article, two novel printed anchor‐shaped slot antennas for multiband wireless applications are proposed. The first proposed anchor‐shaped slot antenna (ASA1) can generate two wide bands centered at about 2.5‐GHz and 5.5‐GHz, covering the 2.4/5.2/5.8‐GHz WLAN bands (2.4–2.484, 5.15–5.35, and 5.725–5.825 GHz) and 2.5/5.5‐GHz WiMAX bands (2.50–2.69 and 5.25–5.85 GHz). The second proposed design is established on the basis of ASA1. By introducing a pair of F‐shaped slits, an extra resonant mode will be excited at 3.5‐GHz. Therefore, it can be converted to a triple‐band anchor‐shaped slot antenna (ASA2) supporting 2.4/5.2/5.8‐GHz WLAN and 2.5/3.5/5.5‐GHz WiMAX (2.50–2.69, 3.30–3.70, and 5.25–5.85 GHz) applications without changing other original design parameters of ASA1. From the aspect of system design, a platform using the proposed antennas would exhibit more flexibility and expansibility. Having overall dimensions of 35 × 30 mm2, the proposed antennas can be easily integrated into portable devices. Monopole‐like radiation patterns almost remain unchanged in the E‐ and H‐planes over the operating bands and sufficient gains are also obtained. Good agreement can be observed between the simulated and measured results. © 2016 Wiley Periodicals, Inc. Microwave Opt Technol Lett 58:521–526, 2016

Anchor shape gap coupled patch antenna for WiMAX and WLAN applications

“…A compact dual band (3.3-4.2 and 5-6 GHz) notched monopole antenna of circular disc shape with anchor shape strip is presented (Ojaroudi et al, 2015) for ultra-wideband (2.69-12.53 GHz) applications. It is established from the perusal of the patch area of the proposed antenna and other antennas reported in Sharma (2014), Kandwal et al (2013); Pal et al (2011), Zaman et al (2014; Ren and Jiang (2016); and Ojaroudi et al (2015) that the patch area of the proposed antenna is lesser as compared to other reported antennas (cf. Figure 1), except the antenna reported in reference (Ojaroudi et al, 2015).…”

“…A dual-band (5.7/7.6 GHz) antenna for C-band applications is presented with gain 6.4 dBi at lower resonating frequency and 4.0 dBi at upper resonating frequency but with a larger patch area (6,400 mm 2 ; Zaman et al, 2014). Anchor shaped antennas (area -1,050 mm 2 ) are reported for dual/triple band operation, for WLAN and WiMAX applications with impedance bandwidths of 13.9/16.4/18.3 per cent at the resonating frequencies of 2.45/3.5/5.5, GHz respectively (Ren and Jiang, 2016). A compact dual band (3.3-4.2 and 5-6 GHz) notched monopole antenna of circular disc shape with anchor shape strip is presented (Ojaroudi et al, 2015) for ultra-wideband (2.69-12.53 GHz) applications.…”

Dual‐wideband dipole antenna with symmetrical strips for WiMAX and WLAN application

“…Slot antennas are also widely employed to generate multi-band operation by using various types of slots and parasitic stubs. [11][12][13] In Chen et al, 14 a dual-band slot antenna is proposed to operate at 1.43-1.62 GHz and 3.36-3.64 GHz bands by using stepped-impedance slot resonators.…”

Meander line MIMO antenna for 5.8 GHz WLAN application

“…A multimode and multiband MIMO antenna covers 2.4–5.2 GHz and 5.2–5.8 GHz frequency band and produces envelop correlation coefficient (ECC) of 0.15 in each band . The MIMO antenna with optoelectronic oscillator covers 2.4/5.2/5.8 GHz wireless local area network (WLAN) bands . Similarly, open slot antenna with inductive and capacitive elements is used to control the mutual coupling effects between the antenna elements, and forms multiband operation .…”