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This paper presents the design of a novel microstrip divider/combiner using T-type networks. Multiple step dividers were analyzed and designed, starting from the S-parameters representing the N-ports, their electrical specifications, and ending with full-wave simulations. We present here, two different designs with this technology, for 4 and 8 output ports. To validate the design, two prototypes working...
In this paper, a linearly tapered slot antenna (LTSA) array fed with a substrate integrated waveguide (SIW) is proposed. An SIW-based 4-way power divider with broadband and low loss properties is designed to implement a compact planar feed network. The array shows a gain of 21 dB with a return loss better than 15 dB over the band of interest (54–66 GHz). The total efficiency of the antenna array is...
A novel low cost 1-to-4 Microstrip Wilkinson Power Divider has been proposed in the frequency range of 1–4 GHz. The power divider is centered at 2.5 GHz and is ideal for use in Through Wall Sensing (TWS) applications. The design has been mathematically modeled and the results have been optimized using HFSS optimetrics. The 1-to-4 power divider has been designed by combining three 1-to-2 power dividers...
A wideband substrate integrated waveguide (SIW) power divider is proposed in this paper using the single-layer printed circuit board (PCB) process. The compact transition circuit between the microstrip line and the half-mode SIW (HSIW) lines in the proposed design can function not only as a transition but also as a power divider. A good impedance matching performance can be achieved due to the similar...
This paper presents a novel design to reduce the size of both power dividers and branch couplers using interdigital circuit. The disadvantage of planar dividers and couplers working at low frequency is their large size. To overcome it, a design method by using interdigital circuit is proposed, which consists of two interdigital capacitors and a high characteristic impedance line. The design theory...
In this paper, two bandpass power dividers (BPD), one using conventional quarter-mode substrate integrated waveguide (QMSIW) and the other using both QMSIW and defected ground structure (DGS), are presented. Compared with conventional substrate integrated waveguide (SIW) circuitry, QMSIW can contribute to a size reduction of nearly 75%. And DGS-loaded QMSIW can further improve the size miniaturization...
Circuits designed and fabricated on a transparent and flexible substrate is presented in this paper. The proposed circuits were designed to operate at 2.4GHz and fabricated on commonly used PVC material. Using double-sided parallel-strip line on power divider and branch line designs, we obtained good simulated and measured results within the frequency of interest.
A compact feeding network for Ku-band active phased array applications is proposed and investigated in this paper. The feeding network is integrated into the substrate with structure size of 8.2λ0 × 9λ0 at the center frequency for a 16×16 array scale, when 32 output ports are welded perpendicularly for connecting the active TR modules and 3 input ports (sum port, azimuth difference port, and elevation...
This article presents a design of a compact T-shaped power divider implementing a ground-slotted technique operating at frequency band of 2 to 9 GHz. This designed power divider is realized by using Rogers 4003C substrate having the thickness of 0.508 mm with dielectric constant of 3.38 and 35 μm copper coating. The designed divider is simulated with commercially available CST Microwave Studio. The...
Substrate integrated waveguide (SIW) is a new type of waveguide structure, which has a lot of advantages on high Q, low loss, low radiation and so on. Because of its unique structure, it is very easy to be integrated in the planar circuits. This paper mainly introduces an efficient type of transition between SIW and rectangular waveguide, and a two-way SIW power divider at w-band. Using full-wave...
In this paper, two classes of Ka-band Substrate Integrated Waveguide(SIW) power divider are presented and studied. The advantages of the SIW technique are its low profile, low-lost, mass-productive, ease of fabrication and fully integrated with planar circuits. All the modules are designed to be operated in a wide frequency range. The Y-junction shows a bandwidth of 29.4%.
The paper firstly studies two novel power-dividing structures which are used in solid-state power amplifiers. Two structures are similar to each other except the air holes. According to the EM simulation, the return loss of first one is smaller than −20dB in the required bands, and the second about −25dB. This paper researches the difference of two structures, and gives the reason which causes the...
This paper presents a compact dual-feed patch antenna capable of achieving dual-polarized radiation suitable for applications demanding frequency reuse or polarization diversity. Circular polarization is obtained by feeding the antenna with 90° phase shift between its two ports using Wilkinson power divider having λ/4 difference between its outputs. This proposed circularly polarized antenna is suitable...
On-chip Wilkinson power dividers are used in MMW circuit designs such as phased array antenna systems. This paper presents a novel on-chip MMW Through-Silicon-Via (TSV) Wilkinson power divider. HFSS simulations of the TSV Wilkinson power divider in a 130 nm BiCMOS technology revealed insertion loss per λ/4 “arm” of 0.9 dB at 60 GHz with both return loss and isolation better than 18 dB at 60 GHz and...
A low cost 4 ports microstrip line phase shifter is proposed. It is composed of the fixed substrate and the movable substrate. The simulation results show that it can realize equal variety of phase difference between nearby ports by moving the movable substrate, and the maximum phase difference ±215 degrees can be achieved at 2 GHz with the maximum deviation to the ideal line only 8°. The differences...
An out-of-phase broad-band substrate-integrated waveguide power divider is proposed. The divider uses a folded substrate-integrated waveguide to split an input signal into a pair of half-mode substrate-integrated waveguides. Due to the field distribution in the folded substrate-integrated waveguide, this power split is out-of-phase. Broadband performance is achieved due to the similar field distributions...
Radial 1:6 microstrip divider is proposed. The divider is based on tapered horizontal and vertical strips and has a 50 ?? SMA connector at the input port and 50 ?? SMA connectors at the output ports. The divider was simulated and measured, showing a bandwidth of 33% for SWR = 2, low insertion loss and high accuracies of output amplitudes and phases. Very good agreement between simulation and measurement...
Two half-mode SIW Wilkinson power dividers are investigated in this paper. The presented compact half-mode SIW power dividers benefit from the excellent shielded transmission characteristics of the SIW in the power splitting branch, unlike the previously published HMSIW Wilkinson power divider. Two structures with waveguide and microstrip line feeds were simulated. The simulations of the half-mode...
A two-layer planar spatial power divider/combiner is proposed. It employs two dielectric substrates with a common ground plane. Two transitions are cascaded to divide power equally. The first transition is from a parallel stripline to two microstrip lines and the second transition is from oversized microstrip line to parallel multiport microstrip lines. A line taper is inserted to provide impedance...
A broadband low cost high power divider was designed. Using an electromagnetic simulator the performance was optimized for high efficiency with good impedance matching. The temperature behavior in steady state was computed, within the framework of the finite integration technique.
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