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The following topics are dealt: millimeter wave devices and circuit technologies; millimeter wave communication systems; millimeter wave antennas and propagation; astronomy; LANs and PANs; home link systems; millimeter-wave signal processing; millimeter-wave photonics; THz techniques; and phased array antennas.
A Ka-band microstrip patch antenna array with aperture-coupled feeding is presented in this paper. For a single element antenna, an impedance bandwidth (return loss < -10 dB) of 2 GHz is achieved at the central operating frequency of 30 GHz. A 2times2 array and a 4times4 array are simulated, and larger array with more elements is theoretically estimated. Potential applications of the designed Ka-band...
The size of traditional microstrip antenna is too large for some handset applications, and the bandwidth of typical planar inverted-F antenna (PIFA) is not wide enough. In this paper a PIFA structure with slot ground has been developed, which provides wider bandwidth and higher gain but with minimized size. The proposed antenna structure provides seven times bandwidth and 1.1 dB higher gain compared...
In analyzing propagation data, It is called "clustering" to classify arrival rays into groups (clusters) according to ToA (time of arrival) and AoA (angle of arrival). Extracting the parameters of each cluster is useful to understand the propagation characteristics in detail, and also to design the wireless system properly. This paper discusses a new clustering method which solves the problem...
Based on the electric field intensity and magnetic induction intensity of electric dipole & electric quadrupole, and the power density of magnetic dipole and electric quadruple in magnetic anisotropic medium, the radiation power of electric quadrupole in magnetic anisotropic medium can be achieved in anisotropic spherical coordinate system by spherical surface integration. By coordinate transformation,...
This paper concerns the simulation of inverse synthetic aperture radar (ISAR) image for radar targets based on the shooting and bouncing ray (SBR) method. Contrary to the conventional approach where the ISAR image is obtained by inverse Fourier transforming to the scattering field, we adopt a newly-developed method [8], where the Fourier transformation has been merged into the SBR algorithm. Such...
A new dual-frequency broadband L-slot mixed E-shaped patch antenna is presented. It is based on E-shaped patch antenna. Two L-shaped slots are cut on E-shaped patch, and two short-pins are inserted between top patch and ground. Besides, the meandered feed patch is also used for good match. As simulated by HFSS10.0 software dual-frequency broadband is obtained. One is between 800 MHz and 980 MHz. The...
This paper presents a low phase noise 92 GHz phase-locked source module with four output ports. This millimeter wave source is used as local oscillators (LO) in a passive millimeter wave imaging system. It achieves a -90.46 dBc/Hz (at 10 kHz offset 92 GHz carrier frequency) phase noise performance, the spur level is lower than -60 dBc. A well matched low insertion loss waveguide four-way power divider...
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