60 GHz patch antennas in LTCC technology for high data-rate communication systems

Alhouri, Luay; Rentsch, S.; Stephan, Ralf; Trabert, Johannes; Müller, Jens; Hein, Matthias

doi:10.1109/inica.2007.4353959

Cited by 6 publications

(3 citation statements)

References 7 publications

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“…Aperture coupling was the method of choice for the antenna feed [19], as a fractional bandwidth of 15% had to be achieved to cover the complete frequency band from 57 to 66 GHz. A direct feed approach utilized in earlier works did not provide sufficient bandwidth for the application at hand, especially on the high-permittivity substrates used in LTCC processes (ε r ≈ 7–8, see Table 4) [20]. Both 2 × 2 and 2 × 1 array arrangements were investigated, in order to keep the link budget balanced, while reserving some margin for the length of the feeding transmission lines as well as for the losses of the bond wires.…”

Section: Very High Rate – Extended Rangementioning

confidence: 99%

Highly integrated antennas and front-ends for 60 GHz WLAN applications

Martinez-Vazquez

Oikonomopoulos-Zachos

Maulwurf

et al. 2011

Int. j. microw. wirel. technol.

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This paper provides an overview of the research carried on in the EASY-A project concerning the design of antennas for different applications in the unlicensed band around 60 GHz, and their integration into compact RF front-ends. Different antenna configurations, in conventional microwave substrate and low-temperature co-fired ceramics (LTCC), were studied and fabricated. The results comply with the requirements established for various scenarios.

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Section: Very High Rate – Extended Rangementioning

confidence: 99%

Highly integrated antennas and front-ends for 60 GHz WLAN applications

Martinez-Vazquez

Oikonomopoulos-Zachos

Maulwurf

et al. 2011

Int. j. microw. wirel. technol.

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“…To keep the dielectric loss low, a material system optimized for high-frequency applications was employed, DuPont DP943 w with tan d ¼ 0.002 specified for 40 GHz [15]. The measurement performed by manufacturer, Ilmenau University of Technology, revealed that the material has the real part of the dielectric permittivity of e r ¼ 7.54 and indicated an upper limit of tan d ¼ 0.01 at 60 GHz [16]. Figures 9(a) and 9(b) show the manufactured unshielded and shielded antenna.…”

Section: I I E X P E R I M E N T a L V E R I F I C A T I O Nmentioning

confidence: 99%

A novel LTCC differentially Fed UWB antenna for the 60 GHz band

Yang

Yarovoy

Valavan

et al. 2011

Int. j. microw. wirel. technol.

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In this paper a novel differentially fed Ultra-Wide Band (UWB) antenna in low-temperature co-fired ceramics (LTCC) technology to be used in the 60 GHz band for integrated RF front-ends is presented. The antenna is based on the aperture stacked patch fed via H-shaped aperture to achieve more than 10 GHz operational bandwidth. The antenna is fed by a parallel-wire transmission line which enables the antenna to be directly integrated with differential Monolithic Microwave Integrated Circuits (MMICs). To alleviate influence of the surface waves (efficiently excited in LTCC material due to its high dielectric constant) on the antenna radiation and realize uni-directional radiation patterns, a dedicated shield is added to the antenna. The measured results of the shielded antenna showed that the antenna has an operational bandwidth from 51 GHz to over 65 GHz, the gain is about 3.5-8 dBi, and 25 dB beamwidth is about +308. The measurement results also demonstrated that the shield indeed improves the antenna impedance bandwidth, gain, and radiation patterns substantially. I . I N T R O D U C T I O NThe demand for using the unlicensed 60 GHz band for communication and radar applications is growing rapidly. The large available bandwidth in the 60 GHz band is appealing to high data rate multimedia communications. Furthermore, the 60 GHz band is very suitable for ultra-high-resolution imaging with short-range radar, thus it is attractive for such application as concealed weapon detection (CWD) [1]. These demands have motivated many developments in the 60 GHz systems, especially in the integrated 60 GHz front-end. The low-temperature co-fired ceramics (LTCC) technology provides an effective solution enabling integration of passive components including antennas and filters with MMICs in a single, cost-effective package. In addition, the multilayer nature of LTCC technology gives the possibility to realize three-dimensional structures such as cavities and vias. The passive components can then be placed at different layers, which enable miniaturization of modules. Therefore, the research of integrated LTCC antennas is very popular, such as in [2][3][4]. Challenges of realizing antennas with the LTCC material in the mm-wave region are related to fabrication accuracy and limitations on structures such as lines, metal plates, or vias. In addition, high relative permittivity of the LTCC material may limit the bandwidth of the antenna and supports excitation of the surface waves in the substrate. As a result, several attempts have been used to lower the effective dielectric constant such as using an air cavity [5,6] or punching holes [7]. However, these approaches will complicate the manufacturing of the antenna, lower the yield rate, and increase cost. The operational bandwidth of LTCC antennas reported in literature is typically below 18% [6,8].This paper presents a novel differentially fed UWB antenna for CWD imaging radar. The antenna should be manufactured using the LTCC technology to be ready for integration with 60 GHz MMICs ...

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“…These include patch antennas [6][7][8][9][10], waveguide slot [11,12], dielectric resonator antenna (DRA) [13], and dielectric Figure 1. This figure shows the basic structure of the antenna.…”

Section: Antenna Designmentioning

confidence: 99%

Practical multiple‐antenna solutions for enhancing adaptive OFDM performance in mm‐wave WPANs

Holland

Hall

Cowley

2009

Int J Communication

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SUMMARYThe design of short-range high-speed wireless networks for the 60 GHz band requires consideration of factors from a wide range of disciplines. Key system choices that make significant differences to the final cost and performance include the type of antennas, multiple access strategy and channel coding. In this paper we assume a coded orthogonal frequency division multiplexing (OFDM) system providing high-speed communications between low-cost terminals over indoor 60 GHz channels that are frequently non-line-of-sight. Under constraints of low transmit power and high path attenuation, we consider two practical options for using multiple low-cost 'bond-wire' antennas, compared with ideal monopole antennas at each terminal. For specified multiple access and channel coding schemes, we show that a sectorized strategy based on simple 2 element phased arrays can provide substantial benefits in system performance and flexibility.

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60 GHz patch antennas in LTCC technology for high data-rate communication systems

Cited by 6 publications

References 7 publications

Highly integrated antennas and front-ends for 60 GHz WLAN applications

Highly integrated antennas and front-ends for 60 GHz WLAN applications

A novel LTCC differentially Fed UWB antenna for the 60 GHz band

Practical multiple‐antenna solutions for enhancing adaptive OFDM performance in mm‐wave WPANs

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