GaAs flipchip
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            diode for millimetre-wave application

Calligaro, M.; Dua, C.; D'hayer, F.

doi:10.1049/el:19920232

Cited by 2 publications

(1 citation statement)

References 4 publications

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“…However, in the millimeter-wave band, it is difficult to acquire the circuit margin; especially, it is undesirable to increase the number of RF ports in the millimeter-wave band due to high production costs. On the other hand, although there is a means to attenuate the electric power in the unselected sectors using resistive material in the switches [7][8], the amount of power that could be supplied to the selected sector would reach only 1/(number of sectors) of the input power. Therefore, by using an ideal ON (penetration)/OFF (reflection) switch, the radial fed-circuit structure is designed to experience minimal loss.…”

Section: Radial Fed-circuit Structurementioning

confidence: 99%

Radial Fed Circuit for Millimeter-Wave Switched Sector-Beam Antenna

Han¹,

Yabuzaki

Takeuchi

et al. 2006

2006 IEEE Antennas and Propagation Society International Symposium

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This paper describes the simulated design for a fed circuit having a radial structure for use in a newly proposed millimeter-wave switched sector-beam antenna. The goal is to realize an ultra-high-speed gigabit-rate wireless LAN. The radial structure is designed to achieve the purpose that the input power from a unique RF port at the structure's center can be sent to any one of selected sectors with maximum power under the required bandwidth. The simulated results of the proposed radial structure show that the bandwidth of S 21 , with an insertion loss of -1.0 B in the frequency range of 59-66 GHz is 7.0 GHz for the case of four, five, and six sectors, and that the bandwidths are 2.3 GHz and 1.7 GHz for the case of seven and eight sectors, respectively. The Millimeter-Wave Switched Sector-Beam AntennaOn the road towards a ubiquitous network society, the opportunities for transmitting and receiving radio data are growing. The contents of such data are primarily multimedia files, including TV programs and movies. For this reason, the size of files being handled by networks will increase considerably in the near future. In such a situation, since transmission speeds of tens of Mbps used by existing radio communications systems are simply inadequate, the hope is to realize an ultra-high-speed gigabit-rate, millimeter-wave wireless LAN where broad bandwidth can be secured [1]. However, at the millimeter-wave level, the electric power efficiency of the transmitter becomes low and the noise figure of a receiver worsens. Moreover, the millimeter-wave circuit itself suffers the problems of a large propagation loss and the difficulty of acquiring a large circuit margin. Fig. 1 Proposed wireless LAN Fig. 2 Proposed switched sector-beam antenna Thus, to realize a millimeter-wave, ultra-high-speed gigabit-rate wireless LAN, a variable-directional antenna is necessary. Supposing an indoor communication 1-4244-0123-2

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Section: Radial Fed-circuit Structurementioning

confidence: 99%