60GHz-band low loss on-chip band pass filter with patterned ground shields for millimeter wave CMOS SoC

Abstract

This paper presents a design of an improved on-chip open loop resonator band pass filter (OLR-BPF) for 60 GHz millimeter-wave applications in 0.18 µm CMOS technology. The proposed on-chip BPF employs the folded open loop structure on patterned ground shields. The adoption of a folded structure for the OLR-BPF and utilization of two transmissions zero permits a compact size and high selectivity for the BPF. In addition, the patterned ground shields obviously slowed down the guided waves, which enables a further reduction of the physical length of the resonator and finally an improvement of the insertion loss of the BPF. By comparison between the electromagnetic (EM) simulations and measurement results, the proposed BPF has the center frequency of 59 GHz, insertion loss 2.77 dB, band width 14 GHz, return loss is less than 27.5 dB, and chip size 910×650 µm 2 (including bonding pads).

Miniaturized low loss 60 GHz CMOS mixed coupled BPF with patterned ground shield

“…Millimeter wave wireless communication at 60 GHz band is one of the promising solutions for the 5G wireless communication system realization due to the possibility of high transfer data rate of more than 10 Gbps. Therefore, a lot of research has been carried out recently to implement 60 GHz radios using the cost effective CMOS technology as it has high potential to integrate back‐end, front‐end circuits, and passive circuits such as antenna and filters together for a system on chip (SoC) solutions .…”

“…A band‐pass filter (BPF) is one of the key components of the wireless communication system. Minimizing the insertion loss of an on‐chip BPF has been an issue in designing a BPF because it reduces the burden on power amplifier hence lowering the power consumption of the system as well. Another issue of designing an on‐chip BPF is miniaturization of the BPF size to decrease the fabrication cost.…”

“…There are numerous number of BPF designs on CMOS for millimeter wave system . Multimode quasi‐elliptical BPF has a low insertion loss and compact size, yet tough to get an accurate value for MIM capacitor due to inductive and capacitive parasitic.…”

“…The good selectivity loop BPF has been proposed in ; however, it is unsuitable for commercial because of the high insertion loss and the large chip size. Open‐loop‐resonator (OLR) BPF with patterned ground shield (PGS) in has good selectivity and low insertion loss, nonetheless suffers from large chip size.…”

High-Q SWCPL for CMOS millimeter-wave technology

“…In millimeter-wave applications, research of on-chip passive devices and integrated antennas using CMOS technology have grown up tremendously [1,2], and transmission lines of low loss have been the bottleneck for such devices [3].…”