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

In this study, the design of concurrent penta-band capable antenna with integrated low-noise amplifier (LNA) for vehicular wireless communication applications is presented. Spiral structured penta-band-based planar monopole antenna is designed to cover navigational frequencies 1.2 and 1.5 GHz, wireless communication frequencies 2.4 and 3.3 GHz and dedicated short range communication frequency 5.8 GHz. LNA was designed and developed with pseudomorphic high electron mobility transistor technology, frequency transformation technique, and load-pull methodology that operates simultaneously at all desired frequencies. The designed antenna with integrated LNA helps better return loss and improved impedance bandwidth compared with passive antenna designs. The developed antenna module operates simultaneously at 1.2, 1.5, 2.4, 3.3, and 5.8 GHz with a gain >10 dB and noise figure <2 dB. More than 150 MHz impedance bandwidth achieved at all the desired bands with this proposed integrated antenna module with LNA.