Design of Hybrid Bandpass Filter Chips with High Selectivity and Wideband Using IPD and FBAR Technology

Table 2

The performance comparison with previous works.

Refs.	(GHz)	FBW (%)	Size ()	Min.IL (dB)	SF^1	Implementation
[1]	3.52	5.7		2.50	0.92	FBARs
[5] B-2	3.58	53.8		1.67	0.77	IPD
[8]	2.02	28.8		1.05	0.88	SAW resonators and TLs
[9]	2.15	24.9		1.87	0.91	FBARs, TLs, and CLs
[11]	0.418	2.87e-4		4.30	N/A	SAW and SMD inductor
Chip A	4.88	13.7		3.86	0.67	FBARs and IPD
Chip B	4.83	15.8		3.07	0.68	FBARs, IPD, and substrate

Estimated value. SF¹: shape factor (3 dB bandwidth/10 dB bandwidth).