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In this paper, the research advances in printed microwave and millimeter wave antennas in the State Key Laboratory of Millimeter Waves (SKLMMW) are reviewed, including printed omnidirectional antennas, dual-band antennas, ultra-wideband antennas with or without frequency notches, multi-beam antennas, low sidelobe antennas, filtennas, frequency scanning antennas, reflectarray, and lens etc.
This paper reviews the past and current research status of substrate integrated waveguide (SIW) antennas and arrays for GHz and THz system applications. Special interest is oriented to on-going worldwide efforts and development of various multi-dimensional and multi-functional highly integrated SIW antenna and array geometries and techniques with focus on single- and multi-beam antennas and arrays...
This article presents and discusses some of the recent developments on 60 GHz antenna arrays in substrate integrated waveguide (SIW) technology. They include planar linearly polarized (LP) antenna, three dimensional (3-D) high gain LP antenna, multi-layer single circularly polarized (CP) antenna, and 3-D dual circularly polarized antenna (DCP) over 60 GHz frequency range. Single LP antenna is realized...
In this paper, a dual-mode cavity-backed patch antenna and a 2×2 array is proposed for Q-band wireless applications. In addition to the original TM01 mode of patch antenna, an independently controllable resonance is introduced by loading the antenna with an inductive via and an annular slot. The bandwidth (return loss<−10 dB) of the antenna element is thus expanded to 12.4% while the bandwidth...
A multifunctional transceiver architecture in support of joint radar-communication functions is proposed and developed based on a multiport interferometer technique. Following a recently developed time-agile waveform modulation scheme, this transceiver is made simpler, more compact and robust. This attractive property is much attributed to a specially proposed six-port topology used in the receiver...
In this paper, compact filters with independent control of center frequency and bandwidth are proposed. Center frequency tuning is realized by changing the electric length of varactor diode loaded resonators, bandwidth reconfiguration is achieved through a convenient way to control the inter-resonator coupling by switching on/off narrow strips connecting two resonators at different positions while...
A technique for achieving simultaneous multiple scanned directional beams is introduced in the substrate integrated waveguide (SIW) technology. In the first part, a two-port leaky-wave antenna (LWA) having broad-side radiating characteristics from −30° to +30° scan angle with 45° polarization is proposed. The phase scanning principle of beam forming network (BFN) and the frequency scanning principle...
A multifunctional transceiver architecture in support of joint radar-communication functions is proposed and developed based on a multiport interferometer technique. Following a recently developed time-agile waveform modulation scheme, this transceiver is made simpler, more compact and robust. This attractive property is much attributed to a specially proposed six-port topology used in the receiver...
A technique for achieving simultaneous multiple scanned directional beams is introduced in the substrate integrated waveguide (SIW) technology. In the first part, a two-port leaky-wave antenna (LWA) having broad-side radiating characteristics from −30° to +30° scan angle with 45° polarization is proposed. The phase scanning principle of beam forming network (BFN) and the frequency scanning principle...
In this paper, a Ka-band Schwinger coupler based on Substrate Integrated Waveguide (SIW) and using LEGO-like interconnected PCB building blocks is proposed for the first time. This reversed phased coupler is composed of two interconnected SIW printed circuit boards (PCBs) coupled through slots spaced by a quarter wavelength. For demonstration purposes a prototype is fabricated. The measured results...
The field orthogonality of LSM10 and TE10 modes respectively in connection with image SINRD (iSINRD) guide and SIW is exploited to develop a planar millimeter-wave hybrid orthogonal-mode transducer (OMT) within the same dielectric substrate layer. The two output arms are related to an iSINRD guide and an SIW. The proposed co-layered planar OMT belongs to a narrowband acute angle class. The design...
A novel technique to design the dual-linear polarization (DLP) antenna array and dual-circular polarization (DCP) antenna array is introduced. Novel 3-D interconnects are proposed and later used in the implementation of both antenna arrays. The DLP array is construed by using eight anti-podal linearly tapered slot antennas (ALTSA) and experimentally validated at 35 GHz. Measured gain is of 18 dBi...
This paper presents an analysis of characterization of substrate material using substrate integrated waveguide (SIW) technology. The advantage of characterization of dielectric anisotropy using SIW technology is that the electric field of SIW exists only along the vertical direction (normal to the substrate surface). Then the permittivity measurement sensitivity of substrate material of SIW methods...
A miniaturized 3-dB branch-line coupler based on substrate integrated coaxial line (SICL) technology is presented. The proposed SICL coupler is nearly shielded and takes the merits of low insertion loss, extremely low radiation loss, and insensitive to outside interference, etc. By using an equivalent π-type topology to replace the quarter-wavelength SICLs, the miniaturized SICL coupler achieves 72...
In this paper, corrugated SIW L-folded antipodal parabolic Tapered Slot Antenna (TSA) is proposed and demonstrated for the very first time. Compared to other reported SIW TSA, this design achieves foot-print reduction by a factor of nearly two and excellent radiation pattern symmetry. This structure can easily be designed to obtain either 45° or −45° polarization. Moreover, this single element shows...
The space charge distribution of the polymer is an important factor affecting the insulating properties. This paper studies the characteristics of space charge distribution of SiC/LDPE nanocomposites surface modified by the coupling agent KH-560. The experimental results show that the interface between the nano-SiC particles and polyethylene itself is the main source of the trap, and add different...
A novel miniaturized ultra wide band (UWB) antenna with 5.7 GHz band rejection function is presented. By utilizing asymmetric structure, the antenna has been miniaturized and has a very compact size of 22×12.7×1.5mm3. Band rejection function is achieved by etching a C-shaped slot on the patch. Simulated and measured results show that the proposed antenna could operate from 3.1 to 11.4 GHz for S11...
The transmission loss of the substrate integrated waveguide (SIW) with CMOS process is investigated in this paper. It is found from the simulation and experimental results that the loss is dominated by the conductor loss other than the dielectric. The period structure of the metallic layers which is required by the CMOS process rules and the random roughness cause extra loss compared with normal conductor...
A compact and low cost substrate integrated waveguide (SIW) cavity and bandpass filter using Surface Mount (SM) shorting stubs is proposed in this paper. These cavity and filter allows a drastically reduction in Printed Circuit Board (PCB) footprint. They are compact and also low cost as there fabrication involves standard PCB process and SM technologies. For demonstration purpose, one cavity and...
An ultra-compact wideband crossover is proposed and realized by using vertical coupling of both electric and magnetic fields simultaneously. The four-port multilayered substrate integrated waveguide (SIW) crossover structure consists of two different types of 90° hybrid coupler integrated at the same physical location. The magnetic field (H) is coupled through slots etched adjacent to the side walls...
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