Triple-Band Uniform Circular Array Antenna for a Multi-Functional Radar System

Abstract

A phased array radar has been developed toward an effective means for integrating multiple functionalities into one radar platform. The radar system necessitates the ability to operate at multiple frequencies simultaneously. In this paper, a triple-band uniform radial sub-array using a shared aperture antenna is proposed for a multi-functional radar system. An efficient placement of different radiating elements is realized based on the radial displacement of the circular array. In addition, multi-layer feed networks are used to reduce the intricacy of integrating several feed networks into one antenna. The reasonable matching characteristics and far-field gain are acquired at the S-band, C-band, and X-band. The measured results of the prototype are presented, and the results are compared to the simulation, which showed a good agreement.

Optimized planar printed UCA configurations for OAM waves and the associated OAM mode content at the receiver

“…Starting from optimized UCA configurations for the desired link range, which will be discussed here, as an initial solution, one could replace an MPA sub‐array with another antenna type. The desired UCA properties for a particular implementation could then be obtained by finely adjusting the antenna element structure using one of the recently studied optimization algorithms 42–44 . An interesting example of a UCA consisting of microstrip Yagi antennas, rather than MPAs, can be found in Liu et al 19 Moreover, an integrated antenna array could be used, consisting of antennas such as a 60‐GHz virtual current loop antenna on a silicon substrate described in Bereka et al 45 It has been shown that for a certain substrate resistivity, at certain frequencies, the antenna efficiency could be up to 20%.…”

A Triple Band C-Shape Monopole Antenna for Vehicle Communication Application

“…However, the antenna design suffers from limited space, the coupling between antennas, and shadowing of other radiation patterns due to a multitude of near-field effects. Also optimum positions are difficult to identify [8][9][10][11][12][13][14][15].…”

“…However, the antenna design suffers from limited space, the coupling between antennas, and shadowing of other radiation patterns due to a multitude of near-field effects. Also optimum positions are difficult to identify [8][9][10][11][12][13][14][15].Several microstrip-feed and CPW-feed printed monopole antennas that can support WLAN and WiMAX applications, while potentially applicable as V2X vehicle antenna, have been reported and well designed to meet a dual or triple band operation [16][17][18][19][20][21][22][23][24][25][26]. In [27], two open ended inverted L-shaped slots on the radiation patch have been designed, but the slot position and dimension were ambiguous, and the E-plane radiation pattern was uneven.…”