**Millimeter-Wave Multi-Port Front-End Receivers: Design Considerations and Implementation** Millimeter-Wave Multi-Port Front-End Receivers: Design

DOI: 10.5772/intechopen.72715

Chaouki Hannachi and Serioja Ovidiu Tatu

Considerations and Implementation

Additional information is available at the end of the chapter Chaouki Hannachi and Serioja Ovidiu Tatu

http://dx.doi.org/10.5772/intechopen.72715 Additional information is available at the end of the chapter

#### Abstract

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This chapter covers recent achievements on the integrated 60 GHz millimeter-wave frontend receiver based on the multi-port (six-port) concept. For this purpose, the design procedure of a fully integrated 60 GHz multi-port (six-port) front-end receiver implemented on a thin ceramic substrate (ε<sup>r</sup> = 9.9, h = 127 μm) using an miniature hybrid microwave integrated circuit (MHMIC) fabrication process is presented in detail. All components constituting the proposed front-end receiver including an 8 2 antenna array, a low-noise amplifier (LNA), a six-port circuit, and the RF power detectors are presented and characterized separately before they are integrated into the final front-end receiver prototype. The performance of the latter has been experimentally evaluated in terms of various M-PSK/M-QAM demodulations. The obtained demodulation results are very satisfactory (the constellation points for all considered M-PSK/M-QAM schemes are very close to the ideal locations), demonstrating and confirming the high ability of the proposed 60 GHz millimeter-wave six-port front-end receiver to operate as a high-performance quadrature demodulator, without any calibration, for modulation schemes up to 32 symbols.

Keywords: demodulation, front-end, low power, MHMIC, millimeter-wave, receiver, six-port, 60 GHz
