Analysis of A Low-Profile Circular Slotted BPF For 5G New Radio Applications
| Authors | Sivanagireddy Kalli1 , Sakhamuri Suryanarayana2 , Venkata Rao Maddumala3 , Nagandla Prasad4 |
| Affiliations |
1Department of Electronics and Communication Engineering, Sridevi Women's Engineering College, Hyderabad, Telangana, India 2Department Electronics and Communication Engineering, Siddhartha Academy of Higher Education (Deemed to be University), Vijayawada, Andhra Pradesh, India 3Department of Computer Science and Engineering, Koneru Lakshmaiah Educational Foundation, Vaddeswaram, Guntur, Andhra Pradesh, India 4Department of Electronics and Communication Engineering, GMR Institute of Technology (GMRIT) - Deemed to be University, Rajam, Andhra Pradesh, India |
| Е-mail | prasad.n@gmritdu.edu.in |
| Issue | Volume 18, Year 2026, Number 5 |
| Dates | Received 20 June 2026; revised manuscript received 23 October 2026; published online 28 October 2026 |
| Citation | Sivanagireddy Kalli, Sakhamuri Suryanarayana, Venkata Rao Maddumala, Nagandla Prasad[footnoteRef:], J. Nano- Electron. Phys. 18 No 5, 05019 (2026) |
| DOI | https://doi.org/10.21272/jnep.18(5).05019 |
| PACS Number(s) | 84.40.Ba |
| Keywords | Microstrip (4) , Band pass filter, 5G new radio applications, Reflection coefficient (3) . |
| Annotation |
A low profile microstrip circular slotted bandpass filter is designed on RT duroid 5880 substrate with r of 2.2, of 0.0009. Wide bandwidth and out of band suppression are the two major factors that has to be considered while designing an RF bandpass filter. An-soft HFSS v13 which is based on FEM, is used to numerically design and simulate a circular slotted BPF. Circular slot-ted BPF is designed and simulated on a 0.254 mm thick substrate having an area of 12 34 mm2. A 50 microstrip transmission line is utilized to attach the circular slotted microwave bandpass filter. Circular slotted BPF offers reflection coefficient of – 32.1 dB and – 41.1 dB at 3.2 GHz and 6.1 GHz respectively. Transmission co-efficient of about 0.2 dB has been observed at 3.2 GHz and 6.1 GHz. 3 dB bandwidth of about 0.4 GHz and 1.4 GHz covering the frequency ranges from 3 GHz-3.4 GHz and 5.3 GHz-6.7 GHz. Group delay of 0.32 nS and 0.67 nS has been observed at 3.2 GHz and 6.1 GHz. Fractional bandwidths of 12.5 % and 22.9 % have been observed. These results make the circular slotted bandpass filter suitable for 5G new radio applications. |
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