Penta-band linear tapered feed planar spiral antenna for vehicular communications

Abstract

Owing to dynamic nature of vehicular environments, it becomes essential to achieve effective communication via vehicle-to-vehicle and infrastructure-to-vehicle. This leads to the need for an antenna system that supports multiple frequency bands, high gain, broadside radiation pattern, and circular polarization. We propose single-arm penta-band-based spiral antenna with dimensions of 51 × 35 × 1.574 mm3resonating at navigational wireless frequencies 1.2 GHz for IRNSS and 1.5 GHz for GPS; wireless communication frequencies 2.45 and 3.3 GHz and dedicated short range communication frequency 5.8 GHz. Linear taper feed has been introduced to achieve good impedance matching and the outer edge feed of the spiral on the same plane helps to achieve circular polarization. The measurement result proves the betterment in impedance of the spiral antenna that varies from 50 –55 Ω across the desired operating frequencies.

Quad-band hybrid DRA loaded MIMO antenna with DGS for isolation enhancement

“…The idea of using taper feed is to provide good impedance matching. The slope of the taper feed [15] is calculated by taking the ratio of the width of the wider end to the narrower end of the taper W U / W L . Figure 1(c) exhibits a partial ground plane with DGS and without DRA.…”

Design of penta‐band antenna with integrated LNA circuit for vehicular communications

“…Fig. 8 shows photograph top and bottom views of developed passive antenna with dimension [22]. The antenna performance was validated with Keysight's N9926A VNA.…”

“…In this work, first, we present LNA which employs frequency transformation methodology for multiband input matching, an amplifier using gallium arsenide (GaAs) pseudomorphic high electron mobility transistors (pHEMT) technology for better noise reduction and an individual output matching network with simple inductor-capacitor (LC) circuit to achieve simultaneous reception of signals. Further sections explain integrated LNA [21] with the designed spiral planar penta-band capable antenna module [22].…”

Design of a compact high gain printed octagonal array of spiral-based fractal antennas for DBS application

“…Mousavi et al [8] designed a low-cost 1K element phased array system for mobile DBS reception. The reason behind using a microstrip antenna [9][10][11][12][13][14][15][16][17][18][19][20][21][22][23][24] is its compactness, less weight, low cost for fabrication, relatively less complicated matching network, and easy interface with microwave devices. Moreover, conventional design of microstrip antennas for Ku band applications [16,18,24,25] suffers from low gain, since the size of the antenna becomes small, which corresponds to lower surface area, that further deteriorates the gain.…”