A 24-GHz and 60-GHz dual-band standing-wave VCO in 0.13µm CMOS process

Abstract In this paper, a millimeter-wave (MMW) dual-mode and dual-band switchable Gilbert up-conversion mixer in a commercial 65-nm complementary metal oxide semiconductor (CMOS) process is presented. By simply changing the bias, the proposed CMOS Gilbert up-conversion mixer can be switched between subharmonic and fundamental operation modes for MMW dual-band applications. With a low local oscillator pumping power of 3 dBm and low dc power consumption of 6 mW, the proposed CMOS Gilbert up-conversion mixer exhibits a measured conversion gain of −0.5 ± 1.5 dB from 37 to 50 GHz and 2.5 ± 1.5 dB from 17.5 to 32 GHz for the subharmonic and fundamental modes, respectively.

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Design of a 24-GHz PSK transmitter for SRR applications based on differential switches in 0.13-um CMOS process

2009 Asia Pacific Microwave Conference ◽

10.1109/apmc.2009.5384415 ◽

2009 ◽

Author(s):

Hung-Chi Wang ◽

Ching-Wen Hsu ◽

Jyh-Ching Juang ◽

Chun-Lin Lu

Keyword(s):

Cmos Process ◽

24 Ghz

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60 GHz injection locked frequency quadrupler with quadrature outputs in 65 nm CMOS process

2009 Asia Pacific Microwave Conference ◽

10.1109/apmc.2009.5385434 ◽

2009 ◽

Cited By ~ 4

Author(s):

Shoichi Hara ◽

Takahiro Sato ◽

Rui Murakami ◽

Kenichi Okada ◽

Akira Matsuzawa

Keyword(s):

Cmos Process ◽

60 Ghz

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A Dual-Band Flexible Wearable Antenna Integrated on a Smart Watch for 5G Applications

Advances in Systems Analysis, Software Engineering, and High Performance Computing - Fundamental and Supportive Technologies for 5G Mobile Networks ◽

10.4018/978-1-7998-1152-7.ch004 ◽

2020 ◽

pp. 77-101

Author(s):

Mohamed Ismail Ahmed ◽

Mai Fouad Ahmed

Keyword(s):

Dielectric Properties ◽

Textile Material ◽

Dual Band ◽

60 Ghz ◽

Specific Absorption ◽

Absorption Ratio ◽

Wearable Antenna ◽

Wearable Antennas ◽

Flexible Material ◽

Smart Watch

This chapter focuses on the design of dual band flexible wearable antennas for modern 5G applications to integrate on a smartwatch. The first is a rectangular antenna which the patch and the ground etched on new flexible material is called ULTRALAM® 3850HT. This antenna is designed to operate at 38 GHz and 60 GHz. The second is a planar inverted-2F wearable antenna pasted on a jeans textile material. Two methods for measuring the dielectric properties of the jeans will be presented. This antenna is designed to operate at 28 GHz and 38 GHz. The SAR (specific absorption ratio) is also introduced and SAR results will be shown. Moreover, the proposed smartwatch under the bent condition will be also studied. These antennas are simulated using HFSS and CST 2018.

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CPW-fed concurrent, dual band planar antenna for millimeter wave applications

International Journal of Microwave and Wireless Technologies ◽

10.1017/s1759078718001009 ◽

2018 ◽

Vol 10 (9) ◽

pp. 1088-1095

Author(s):

Smriti Agarwal ◽

Dharmendra Singh

Keyword(s):

Millimeter Wave ◽

Coplanar Waveguide ◽

Cost Effective ◽

Dual Band ◽

Single Frequency ◽

60 Ghz ◽

Fractional Bandwidth ◽

High Data ◽

V Band ◽

Dual Band Antenna

AbstractIn recent years, millimeter wave (MMW) has received tremendous interest among researchers, which offers systems with high data rate communication, portability, and finer resolution. The design of the antenna at MMWs is challenging as it suffers from fabrication and measurement complexities due to associated smaller dimensions. Current state-of-the-art MMW dual-band antenna techniques demand high precision fabrication, which increases the overall cost of the system. Henceforth, the design of an MMW antenna with fabrication and measurement simplicity is quite challenging. In this paper, a simple coplanar waveguide (CPW) fed single-band MMW antenna operating at 94 GHz (W band) and a dual-band MMW antenna operating concurrently at 60 GHz (V band) and 86 GHz (E band) have been designed, fabricated, and measured. A 50 Ω CPW-to-microstrip transition has also been designed to facilitate probe measurement compatibility and to provide proper feeding to the antenna. The fabricated single frequency 94 GHz antenna shows a fractional bandwidth of 11.2% andE-plane (H-plane) gain 6.17 dBi (6.2 dBi). Furthermore, the designed MMW dual-band antenna shows fractional bandwidth: 2/6.4%, andE-plane (H-plane) gain: 7.29 dBi (7.36 dBi)/8.73 dBi (8.68 dBi) at 60/86 GHz, respectively. The proposed antenna provides a simple and cost-effective solution for different MMW applications.

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