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A compact, dual-polarized patch antenna with improved TxRx isolation for 2.4 GHz single frequency full-duplex applications

  • Haq Nawaz (a1), Muhammad Abdul Basit (a1) and Ahmad Umar Niazi (a1)

Abstract

A compact dual-polarized monostatic antenna (single radiator for transmit and receive modes) is presented with differential receive mode operation to achieve excellent interport isolation for 2.4 GHz single frequency full-duplex or in-band full-duplex applications. The presented antenna comprises three ports radiating element (patch) and a simple 3 dB/180o ring hybrid coupler has been utilized for differentially excited receive mode operation. The 3 dB/180o ring hybrid coupler acts as a self-interference cancellation (SIC) circuit for effective suppression of RF leakage from the transmit port to provide very high interport decoupling between transmit and receive ports. A compact antenna structure has been realized by using two-layered printed circuit board through vias interconnections of both receive ports of the antenna with inputs of SIC circuit. The validation model of proposed antenna offers more than 95 dB peak interport isolation. Moreover, the experimentally measured interport isolation is better than 70 dB throughout the antenna's 10 dB return-loss impedance bandwidth (BW) of 50 MHz (2.38–2.43 GHz). Furthermore, the recorded isolation is more than 80 dB in 20 MHz BW. The implemented antenna has good radiation characteristics including nice gain and low cross-polarization levels as endorsed by measurements. Same antenna structure with microstrip-T feeds can provide DC isolated ports with same interport RF isolation performance for active antenna applications. Such antenna with DC interport isolation will avoid the requirements of additional series capacitors on transmit and receive ports of antenna.

Copyright

Corresponding author

Author for correspondence: Haq Nawaz, E-mail: haq.nawaz@uettaxila.edu.pk

References

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1.Bharadia, D, McMilin, E and Katti, S (2013) Full Duplex Radios. ACM SIGCOMM 2013, Hong Kong.
2.Maraševic, J, Zhou, J, Krishnaswamy, H, Zhong, Y and Zussman, G (2017) Resource allocation and rate gains in practical full-duplex systems. IEEE/ACM Transactions on Networking 25, 292305.
3.Korpi, D, et al. (2014) Full-duplex transceiver system calculations: analysis of ADC and linearity challenges. IEEE Transactions on Wireless Communications 13, 38213836.
4.Anttila, L, Korpi, D, Syrjälä, V, et al. (2013) Cancellation of power amplifier induced nonlinear self-interference in full-duplex transceivers. 2013 Asilomar Conference on Signals, Systems and Computers, Pacific Grove, CA, pp. 11931198.
5.Nawaz, H and Tekin, I (2016) Three dual polarized 2.4 GHz microstrip patch antennas for active antenna and in-band full duplex applications. 2016 16th Mediterranean Microwave Symposium (MMS), Abu Dhabi, United Arab Emirates, pp. 14. doi: 10.1109/MMS.2016.7803854.
6.Amjad, MS, Nawaz, H, Özsoy, K, Gürbüz, Ö and Tekin, I (2018) A low-complexity full-duplex radio implementation with a single antenna. IEEE Transactions on Vehicular Technology 67, 22062218.
7.Younkyu, C, Seong-Sik, J, Ahn, D, et al. (2004) High isolation dual-polarized patch antenna using integrated defected ground structure. IEEE Microwave and Wireless Components Letters 14, 46.
8.Nawaz, H and Tekin, I (2016) Dual port single patch antenna with high interport isolation for 2.4 GHz in-band full duplex wireless applications. Microwave and Optical Technology Letters 58, 17561759.
9.Nawaz, H, Gürbüz, Ö and Tekin, I (2018) High isolation slot coupled antenna with integrated tunable self interference cancellation (SIC) Circuitry. Electronics Letters 54, 13111312.
10.Kolodziej, K, McMichael, J and Perry, B (2016) Multitap RF canceller for In-band full-duplex wireless communications. IEEE Transactions on Wireless Communications 15, 43214334.
11.Nawaz, H, Gürbüz, Ö and Tekin, I (2019) 2.4 GHz Dual polarized monostatic antenna with simple two-taps RF Self Interference Cancellation (RF-SIC) circuitry. Electronics Letters 55, 299300.
12.Deng, C, Li, Y, Zhang, Z, et al. (2014) A wideband high-isolated dual-polarized patch antenna using two different balun feedings. IEEE Antennas and Wireless Propagation Letters 13, 16171619.
13.Zhang, Y and Wang, P (2016) Single ring two-port MIMO antenna for LTE applications. Electronics Letters 52, 9981000.
14.Chang, K, York, RA, Hall, PS and Itoh, T (2002) Active integrated antennas. IEEE Transactions on Microwave Theory and Techniques 50, 937944.
15.Luxey, C and Laheurte, J-M (1999) A retrodirective transponder with polarization duplexing for dedicated short range communications. IEEE Transactions on Microwave Theory and Techniques 47, 19101915.
16.Bialkowski, ME and Song, HJ (2002) Investigation into a power-combining using a reflect-array of dual polarized aperture-coupled microstrip patch antennas. IEEE Transactions on Antennas and Propagation 50, 841849.
17.Puente, C, Anguera, J and Borja, C (2005) Dual-band dual-polarized antenna array. US Pat. 6,937,206.
18.Nawaz, H and Tekin, I (2017) Dual-polarized, differential fed microstrip patch antennas with very high interport isolation for full-duplex communication. IEEE Transactions on Antennas and Propagation 65, 73557360.
19.Yilan, M, Ayar, H, Nawaz, H, Gurbuz, O and Tekin, I (2019) Monostatic antenna In-band full duplex radio: performance limits and characterization. IEEE Transactions on Vehicular Technology 68, 47864799.
20.Nawaz, H and Tekin, I (2018) Double differential fed, dual polarized patch antenna with 90 dB interport RF isolation for 2.4 GHz In-band full duplex transceiver. IEEE Antennas and Wireless Propagation Letters 17, 287290.
21.Nawaz, H and Umar Niazi, A (2019) A compact proximity-fed 2.4 GHz monostatic antenna with wide-band SIC characteristics for in-band full duplex applications. International Journal of RF and Microwave Computer-Aided Engineering 30, e22087.
22.Liang, X-L, Zhong, S-S and Wang, W (2005) Design of a dual-polarized microstrip patch antenna with excellent polarization purity. Microwave and Optical Technology Letters 44, 329331.
23.Nawaz, H and Basit, A (2019) Single layer, dual polarized, 2.4 GHz patch antenna with very high RF isolation between DC isolated TxRx ports for full duplex radio. Progress In Electromagnetics Research Letters 85, 6572.
24.Nawaz, H, Basit, MA and Shaukat, F (2020) Dual polarized, slot coupled monostatic antenna with high isolation for 2.4 GHz full duplex applications. Microwave and Optical Technology Letters 62, 12911298.
25.Kurup, DG, Rydberg, A and Himdi, M (2002) Compact microstrip-T coupled patch antenna for dual polarisation and active antenna applications. Electronics Letters 38, 12401241.
26.Khaledian, S, Farzami, F, Smida, B and Erricolo, D (2018) Inherent self-interference cancellation for In-band full-duplex single-antenna systems. IEEE Transactions on Microwave Theory and Techniques 66, 28422850.

Keywords

A compact, dual-polarized patch antenna with improved TxRx isolation for 2.4 GHz single frequency full-duplex applications

  • Haq Nawaz (a1), Muhammad Abdul Basit (a1) and Ahmad Umar Niazi (a1)

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