Liquid Crystal Polymer (LCP) based antenna for flexible system on package (SoP) applications

Abstract

Full Paper -The design, fabrication and measurement of a bowtie antenna on a flexible Liquid Crystal Polymer (LCP) substrate is reported in this paper. The antenna is fed by a balun transition which helps improve the gain up to 5.1 dB. The antenna performance is analyzed for both planar and curved substrates. The comparison between simulation and measurements shows a good agreement. This structure can either be used to sense the bending of the substrate or use the bending to tilt the beam.

Inkjet Printed Series-Fed Two-Dipole Antenna Comprising a Balun Filter on Liquid Crystal Polymer Substrate

“…In [19], four common types of transmission lines and a bandpass filter were presented, using a flexible LCP substrate to attain sharp bending. Few bending antennas have been reported for LCP substrates, using curved bowtie antennas [14], bent, folded, and rolled conformal monopole antennas [20], or cylindrically bent balanced-fed aperture-coupled patch antennas [16]. The reference reports have presented only the results of simulations and the S-parameters measurements required for bending.…”

“…The millimeter wave filters on LCP substrates can be used in wide bandwidth designs [11], multilayer circuit technology [12], and integrated waveguides [13]. Regarding antennas on LCP substrates, a 5.8 GHz bowtie antenna [14]; 14 and 35 GHz dual-frequency, dual-polarization microstrip antenna arrays [15]; and a 60 GHz cylindrically bent balanced-fed aperture-coupled patch antenna [16] have been proposed. Other studies have proposed rectangular UHF monopole antenna [17] and dual-band planar monopole antennas that employ inkjet printing on an LCP substrate to serve as a sensor for 24/60/70 bands [18].…”

Design Optimization of Reconfigurable Liquid Crystal Patch Antenna

“…At the same time, the size of the hardware is increasingly miniaturized and flattened. Therefore, it can be said that the development of an antenna for transmitting and receiving broadband information while covering various frequency bands in a limited space is an important task [ 3 , 4 , 5 , 6 ].…”

Flexible-Screen-Printed Antenna With Enhanced Bandwidth by Employing Defected Ground Structure

“…The advances of current wireless communication systems are targeting at the 5th generation (5G) systems, where wireless devices are able to communicate with each other like the Internet of things (IoT). As a result, designs of low-cost and flexible antennas for 5G devices of various shapes and sizes with wide bandwidths have attracted much attention [11][12][13][14][15][16][17][18][19]. Flexible materials such as papers [8 -10], polyethylene terephtalate (PET) [11], liquid crystal polymer (LCP) [12], thin glass [13], Kapton [14,15] and Rogers [16,17] have been proposed for uses in flexible antennas.…”