A compact UWB MIMO antenna with enhanced isolation for WBAN applications

Compact ultra-wideband pattern diversity antenna for body-centric communications

“…(3) Good isolation characteristics are achieved between antenna elements with a minimum interelement spacing and without the need for any additional structure unlike as in [18-22, 24, 27, 28]. (4) The proposed MIMO antenna design offers both directional and omnidirectional radiation characteristics suitable for both onbody and off-body communication dissimilar to [18][19][20][21][22][23][24][27][28][29][30][31][32][33]. (5) In contrast to [22,24], the proposed design provides symmetric geometry with a respective axis from the port position, hence current distribution is evenly distributed thus paving a way for symmetric radiation patterns.…”

“…(5) In contrast to [22,24], the proposed design provides symmetric geometry with a respective axis from the port position, hence current distribution is evenly distributed thus paving a way for symmetric radiation patterns. (6) Gain and efficiency obtained from the proposed antenna design become more suitable for practical applications dissimilar to [4,[18][19][20][21][22][23][24][27][28][29][30][31][32][33]. Table 3 provides the comparison of the proposed antenna with existing literature.…”

“…The omnidirectional radiation pattern [20][21][22][23][24] obtained causes radiation exposure when tested on body tissues. From the aforementioned literature, the issues found are as follows: large antenna dimension , high profile [1,2,7,10,13,15,17], low gain and efficiency [18][19][20][21][22][23][24][27][28][29][30][31][32][33], and MIMO antenna elements providing omnidirectional radiation pattern [18][19][20][21][22][23][24][27][28][29][30][31][32] suitable only for on-body communication but it results in electromagnetic exposure as tested on the body. The proposed antenna design mitigates the above-mentioned issues by providing features such as low profile, better isolation, good radiation efficiency, and gain, and the pattern diversity providing diverse functions such as the omnidirectional and directional patterns on a single platform suitable for both on/ off-body communication respectively.…”

Design of the Twelve-bands MIMO Antenna for the Metal Cover Mobile Phone

“…For multiple input multiple output (MIMO) systems to obtain the diversity gain, the interference among several antennas makes a poor effect to the antenna characteristics. Therefore, many studies focused on increasing the antenna bandwidth with high efficiency [1][2][3][4] and improvement for the isolation between antennas [5,6] are currently in progress.…”

Broadband MIMO Antenna Using the Metal Cover Radiator

“…그러므 로 MIMO 시스템에서 요구하는 중요한 파라미터인 격리 도 및 포락선 상관계수(Envelop Correlation Coefficient, ECC) 성능을 만족하기 어려운 단점을 보이고 있다 [5] . 이 를 해결하기 위해 광대역이면서 방사 효율이 높은 안테 나에 대한 연구 [6]～ [9] 와 더불어 안테나 간 분리도 특성을 개선하기 위한 연구 [10], [11] 가 시도되고 있다. [12] .…”