“…Taking LTE for example, its channel bandwidth contains 1.5/3/5/10/15/20 MHz. The bandwidths of SAWless receiver front-end in previous works are either fixed [3,7,10,12,13,14] or can only be configured discretely which makes it difficult to achieve an accurate value [4,5,9,11,15]. Without precise RF channel selection, the adjacent channel interference could seriously degenerate the performance of SAW-less receiver.…”