Transmitter Architectures Based on Near-Field Direct Antenna Modulation

Author

Babakhani, Aydin ; Rutledge, David B. ; Hajimiri, Ali

Author_Institution

Dept. of Electr. Eng., California Inst. of Technol., Pasadena, CA

Volume

43

Issue

12

fYear

2008

Firstpage

2674

Lastpage

2692

Abstract

A near-field direct antenna modulation (NFDAM) technique is introduced, where the radiated far-field signal is modulated by time-varying changes in the antenna near-field electromagnetic (EM) boundary conditions. This enables the transmitter to send data in a direction-dependent fashion producing a secure communication link. Near-field direct antenna modulation (NFDAM) can be performed by using either switches or varactors. Two fully-integrated proof-of-concept NFDAM transmitters operating at 60 GHz using switches and varactors are demonstrated in silicon proving the feasibility of this approach.

Keywords

microwave antennas; microwave switches; radio transmitters; varactors; communication link; frequency 60 GHz; fully-integrated proof-of-concept transmitters; near-field direct antenna modulation; near-field electromagnetic boundary conditions; radiated far-field signal; switches; transmitter architectures; varactors; Communication switching; Dipole antennas; Radio frequency; Radio transmitters; Receivers; Receiving antennas; Switches; Transceivers; Transmitting antennas; Varactors; BiCMOS; CMOS switch; dielectric lens; dipole; integrated antennas; integrated circuits; modulation; phased-array; reflector; secure communication; silicon Germanium; surface-wave; transmitter; varactor;

fLanguage

English

Journal_Title

Solid-State Circuits, IEEE Journal of

Publisher

ieee

ISSN

0018-9200

Type

jour

DOI

10.1109/JSSC.2008.2004864

Filename

4684619