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access icon free 60 GHz on-chip mixed coupled BPF with H-shaped defected ground structures

A 60 GHz miniaturised, low loss on-chip bandpass filter (BPF) based on open-loop resonators is presented. Overlapping of the BPF's resonators leads to miniaturisation and introduces a mixed coupling configuration. Moreover, its resonators are folded to minimise the size and the insertion loss (IL). H-shaped defected ground structures are also used to reduce IL and to improve the out of band rejection. The measured IL, return loss, centre frequency, and bandwidth are 2.85 dB, 18 dB, 59 GHz and 15.5 GHz with a chip size of 368 × 262 µm2 including pads.


    1. 1)
      • 5. Chen, Y.-M., Chang, S.-F.: ‘A ultra-compact 77-GHz CMOS bandpass filter using grounded pedestal stepped-impedance stubs’. European Microwave Conf., Manchester, UK, October 2011, pp. 194197.
    2. 2)
      • 4. Pokharel, R.K., Liu, X., Dong, R., Dayang, A., Kanaya, H., Yoshida, K.: ‘60 GHz-band low loss on-chip band pass filter with patterned ground shields for millimeter wave CMOS SoC’. Int. Microwave Symp., Baltimore, MD, USA, June 2011, pp. 14.
    3. 3)
      • 6. Yeh, L.-K., Chenn, Y.-C., Chuang, H.-R.: ‘A novel ultra-compact and low-insertion-loss 77 GHz CMOS on-chip bandpass filter with adjustable transmission zeros’. European Microwave Conf., Rome, Italy, October 2014, pp. 10561059.
    4. 4)
      • 8. Hong, J.-S.: ‘Microstrip filters for RF/microwave applications’ (John Wiley & Sons Inc., New York, 2011).
    5. 5)
      • 9. Terman, F.E.: ‘Radio engineers’ handbook’ (McGraw-Hill, New York, 1943).
    6. 6)
    7. 7)
    8. 8)
    9. 9)

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