Rancang Bangun Matched Mixer sebagai Komponen Penyusun IQ Mixer pada Aplikasi Synthetic Aperture Radar

ABDURRASYID RUHIYAT, FAROHAJI KURNIAWAN, CATUR APRIONO

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ABSTRAK

IQ Mixer adalah komponen yang penting pada subsistem RF Synthtetic Aperture Radar (SAR) karena berperan untuk melakukan proses Single Side Band (SSB) modulation antara sinyal qudrature base chirp (IF) dengan sinyal carrier (LO), sehingga mampu menurunkan beban kerja Field Programmable Gate Arrays (FPGA) dan meningkatkan resolusi sistem SAR. IQ Mixer tersusun dari satu Quadrature LO Phase Shifter, dua Matched Mixer dan satu Power Combiner-Splitter. Pada penelitian ini dipaparkan mengenai perancangan Matched Mixer yang dibuat dengan menggunakan anti-phase coupler dan konfigurasi double balanced mixer. Anti-phase coupler yang digunakan merupakan modifikasi dari qudrature coupler dengan tujuan untuk menghindari interferensi karena adanya saluran transmisi yang saling menyilang. Hasil pengukuran menunjukkan bahwa anti-phase coupler memiliki nilai phase unbalance dibawah 1°, amplitude unbalance dibawah 0,6 dB dan untuk double balanced mixer memiliki nilai conversion loss (CL) sebesar 9,58 dB.

Kata kunci: Coupler, Matched Mixer, IQ Mixer, Synthetic Aperture Radar

 

ABSTRACT

IQ Mixer is an important component in the RF Synthetic Aperture Radar (SAR) subsystem that plays a role in carrying out the single side band modulation process between the quadrature base chirp (IF) signal and the carrier (LO) signal, thereby reducing the workload of the Field Programmable Gate Arrays (FPGA) and increasing the resolution of SAR systems. IQ Mixer is composed of a Quadrature LO Phase Shifter, two Matched Mixers, and a Power Combiner-splitter. This research describes the process of designing a matched mixer, which is made using an anti-phase coupler and a double-balanced mixer configuration. The anti-phase coupler is a modified version of the quadrature coupler to avoid interference due to crossing transmission lines. The measurement results show that the anti-phase coupler has a phase unbalance value below 1°, an amplitude unbalance below 0.6 dB, and the double-balanced mixer has a conversion loss value of 9.58 dB.

Keywords: Coupler, Matched Mixer, IQ Mixer, Synthetic Aperture Radar


Kata Kunci


Coupler; Matched Mixer; IQ Mixer; Synthetic Aperture Radar

Teks Lengkap:

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Referensi


Chua, M. Y., Sumantyo, J. T. S., Santosa, C. E., Panggabean, G. F., Sumantyo, F. D. S., Watanabe, T., Ji, Y. Q., Sitompul, P. P., Nasucha, M., Kurniawan, F., Purbantoro, B., Awaludin, A., Sasmita, K., Rahardjo, E. T., Wibisono, G., Jatmiko, R. H., Sudaryatno, S., Purwanto, T. H., Widartono, B. S., & Kamal, M. (2019, February). The maiden flight of Hinotori-C: The first C band full polarimetric circularly polarized synthetic aperture radar in the world. IEEE Aerospace and Electronic Systems Magazine, 34(2), 24–35.

Citron, N., Holdengreber, E., Sorkin, O., Schacham, S. E., & Farber, E. (2021). High-Performance RF Balanced Microstrip Mixer Configuration for Cryogenic and Room Temperatures. Electronics, 11(1), 102. https://doi.org/10.3390/electronics11010102

Cox, K. (2022). A Quick Guide to Mixer Topologies. https://blog.minicircuits.com/a-quickguide-to-mixer-topologies/

Edwards, T. C., & Steer, M. B. (2016). Foundations for microstrip circuit design (Fourth edition). John Wiley & Sons Inc.

Guo, J., Xu, Z., Qian, C., & Dou, W.-B. (2011). Design Of A Microstrip Balanced Mixer For Satellite Communication. Progress In Electromagnetics Research, 115, 289–301. https://doi.org/10.2528/PIER11022109

Jorgesen, D. (2018). IQ, Image Rejection Single Sideband Mixer Primer.

https://markimicrowave.com/technical-resources/white-papers/iq-ir-ssb-mixer-primer/

Kingsley, N., & Guerci, J. R. (2016). Radar rf circuit design. Artech House.

Liu, Y., Zhang, B., Niu, Z., Feng, Y., & Fan, Y. (2023). A Novel 180–210 GHz Single Sideband Mixer Using Filtering Waveguide-Microstrip Transition Structure. IEEE Microwave and Wireless Technology Letters, 33(6), 727–730. https://doi.org/10.1109/LMWT.2023.3248061

Marki, F., & Marki, C. (2010). Mixer Basics Primer A Tutorial for RF & Microwave Mixers. https://markimicrowave.com/technical-resources/white-papers/mixer-basics-primer/

Mohyuddin, W., Lee, G. H., Kim, D. H., Kim, I. B., Choi, H. C., & Kim, K. W. (2018). A Compact Double-Balanced Diode Ring Mixer for Wideband Applications. 2018 48th European Microwave Conference (EuMC), 648–651. https://doi.org/10.23919/EuMC.2018.8541547

Ozdemir, C. (2021). Inverse Synthetic Aperture Radar Imaging with MATLAB Algorithms (Second Edition). Wiley.

Palombini, D., Cavanna, T., Arena, S., & Limiti, E. (2016). Design Of Sub-Harmonic Mixer MMIC for EHF Satellite Links. Progress In Electromagnetics Research C, 66, 149–161. https://doi.org/10.2528/PIERC16022906

Pushpa, K., & Ghosh, J. (2021). Dual-band Subharmonic Mixer for Wifi Application With Improved Conversion Loss And RF-to-IF Isolation. Progress In Electromagnetics Research C, 112, 11–20. https://doi.org/10.2528/PIERC21030408

Rosu, I. R. (2023). RF Mixers. https://www.qsl.net/va3iul/RF%20Mixers/RF_Mixers.pdf

Setty, R. (2022). I&Q Mixers, Image Reject Down-Conversion & Single Sideband (SSB) Up-Conversion. https://blog.minicircuits.com/iq-mixers-image-reject-down-conversionsingle-sideband-ssb-up-conversion/

Sumantyo, J. T. S., Chua, M. Y., Santosa, C. E., & Izumi, Y. (2023). Airborne Circularly Polarized SAR: Theory, System Design, Hardware Implementation, and Applications (First Edition). CRC Press.

Sun, R., Chen, Q., Han, R., & Lu, Z. (2019). Analysis and Design of Wideband 90° Microstrip Hybrid Coupler. IEEE Access, 7, 186409–186416. https://doi.org/10.1109/ACCESS.2019.2957122

Ulaby, F. T., Moore, R. K., & Fung, A. K. (1981). Microwave remote sensing: Active and passive (I). Artech House.

Zeng, J. J., Lin, X. Q., Su, Y. H., Yang, Y. M., Mei, P., & Zhu, Z. B. (2022). Low-Cost Third-Harmonic Mixer for -Band Retrodirective System Applications . IEEE Microwave and Wireless Components Letters, 32(11), 1323–1326. https://doi.org/10.1109/LMWC.2022.3184627




DOI: https://doi.org/10.26760/elkomika.v12i3.716

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