A significantly miniaturised meandered loop on‐chip antenna (MeLOCA) for communication at 9.45 GHz has been proposed. First, a meandered loop antenna size is reduced and its gain is enhanced by introducing a partially shield layer (PSL). Then, the antenna size is further reduced with a shorted conical pin connecting the antenna and PSL. The PSL provides capacitive loading and shifts resonating frequency of the reference antenna from 23 to 11.07 GHz. Also, it reduces substrate loss by obstructing EM wave propagation towards the lossy Silicon substrate and offers gain enhancement. Moreover, shorting to PSL offers an enhanced electrical length and shifts resonating frequency at 9.45 GHz. Thus, combination of PSL and shorting pin leads to realise the optimally designed MeLOCA size of 2.1 × 2 mm2 with reduction up to λ0/15.11. Simulated maximum gain and efficiency of −29 dB and 21.07%, respectively, make the antenna a suitable candidate for short range communication. Also, maximum of 16 and 20 dB and minimum of 3 and 5.6 dB isolations between co‐polarisation and cross‐polarisation components are achieved, respectively, in E and H planes. A prototype has been fabricated using 0.18 μm CMOS technology and good agreement between simulated and measured return loss characteristics is observed.
This review paper explores the potential use of the planar miniaturized antenna for wireless capsule endoscopy application: one of the promising fields in the current era. The paper highlights the design strategy, various optimization techniques with respect to system realization, material compatibility issues and finally the mandatory EM radiation effect analysis for the said application. It compares amongst various currently reported structures in context with different performance metrics. Inherent challenges of this emerging field of bio-medical engineering have also been detailed here along with futuristic approaches for enhancing the throughput.
scite is a Brooklyn-based organization that helps researchers better discover and understand research articles through Smart Citations–citations that display the context of the citation and describe whether the article provides supporting or contrasting evidence. scite is used by students and researchers from around the world and is funded in part by the National Science Foundation and the National Institute on Drug Abuse of the National Institutes of Health.