Printed log‐periodic trapezoidal dipole array antenna with a balun‐feed for ultra‐wideband applications

Abstract

The authors present design of a printed log‐periodic trapezoidal dipole array (PLPTDA) antenna with a balun‐feed operating throughout the 2–18 GHz frequency range. For this purpose, the antenna is designed and simulated in the CST Microwave Studio environment. Thus, better directivity along the operation bandwidth is achieved via the iterative simulations with a 33.33% reduction in the dipole length at the lowest frequency 2 GHz as compared with the counterpart standard log‐periodic antennas. Furthermore, they fabricated the PLPTDA antenna with and without the balun‐feed. Thus, influence of the balun on the performance is investigated and the average gain of the PLPTDA antenna with the balun‐feed is measured as 8.16 dBi provided voltage standing wave ratio (VSWR) < 2, which agrees with the simulation results. Furthermore, these measured gain/directivity results are compared with the counterpart antennas' measured performances in the literature considering their operation bandwidths and sizes. It can be concluded that their proposed PLPTDA antenna will prove to be useful in both wideband civilian and military applications in the S, C, X, and Ku bands within the 1:9 ultra‐wideband bandwidth which is the largest achieved in this class antenna technology in the literature up to now.

RF energy harvesters for wireless sensors, state of the art, future prospects and challenges: a review

“…8 . Zengin et al [ 36 ] developed an RFEH system that employs a loop RA and differential drive rectifier, achieving maximum output voltage of 2.31 V from GSM-900 transmitter. Similarly, RFEH developed with a wideband quasi-isotropic patch RA is capable of harvesting a maximum voltage of 1.2 V at a long distance of 5800 m from the TV and FM transmitters [ 96 ].…”

“…8. Zengin et al [36] developed an RFEH system that employs a loop RA and differential drive rectifier, achieving maximum output voltage of 2.31 V from GSM-900 transmitter. Similarly, RFEH developed based devices are primarily low-power devices as discussed in Table 1, using full-wave rectifiers with the fewest possible stages is highly advantageous when aiming to achieve maximum PCE and minimize the overall size of the system [63,83].…”

“…The design of miniaturized antennas for RFEH has garnered significant attention in research circles over the past decade, primarily owing to its relevance in powering low-power sensors and implantable devices. In the literature, various antennas, monopoles [20,34], dipoles [35][36][37], loops [38,39], patches [18,[40][41][42], and planar inverted F [43][44][45] have been developed with single [18,39,40], dual [33,34,37], multi [45,46], wideband [38,48] and array [43,47] topologies. Standard designing and simulation techniques have been developed and adopted over the past decade to improve the performance of RA.…”

Sinuous Antenna for UWB Radar Applications

“…A wideband cavity backing unidirectional LP antenna is proposed in [ 45 ] to obtain enhanced efficiency in a wide frequency range, as well as a better impedance matching at the low-frequency band. Moreover, to simplify the feeding structure and reduce the antenna footprint, a printed LP monopole [ 46 ] and trapezoidal dipole [ 47 ] antenna array was proposed. Among LP antennas, the sinuous ones have gained lot attention as they can minimize the reflections coming from the antenna ends [ 48 ].…”