Design and Experiment of Filtering Power Divider Based on Shielded HMSIW/QMSIW Technology for 5G Wireless Applications

Abstract

In this paper, a new class of shielded half-mode substrate integrated waveguide (SD-HMSIW) and shielded quarter-mode substrate integrated waveguide (SD-QMSIW) filtering power dividers (FPDs) have been presented. The proposed prototypes are capable of splitting/combining power and selecting frequency simultaneously. The SD-HMSIW and SD-QMSIW resonant cavities combine the features of compact size, high-quality factor, and low loss. To the best of author's knowledge, it is the first time employing the shielded SIW structure for FPD designs. The six prototype circuits with pure or hybrid SD-HMSIW/SD-QMSIW resonators are designed and fabricated to validate the proposed concept. Multilayered structures are implemented to minimize the dimensions of the FPDs further. Transmission zeros distributing near the operating passband are introduced by cross-coupling mechanism. Both measured and simulated results indicate that the proposed FPDs with the shielded SIW structures exhibit not only filtering performance, but also the good magnitude and phase imbalance characteristics in the operating frequency band.INDEX TERMS Filtering power divider (FPD), half-mode, quarter-mode, shielded substrate integrated waveguide (SD-SIW).

Compact HMSIW four‐way filtering power divider with pre‐defined division ratio

“…Generally, the HMSIW cavity is obtained by bisecting the SIW cavity along the magnetic wall. To reduce radiation loss, a row of metalized via holes place near the side of the open plane 17 . The HMSIW is an improvement of the SIW structure, which can achieve nearly half of the size reduction without deteriorating the performance of the SIW structure.…”

“…The co‐design of filter and power divider is highly desired, which can not only reduce the overall circuit size but also eliminate the connection loss. Accordingly, filtering power dividers (FPDs) based on microstrip line, 3‐10 metal waveguide, 11 dielectric resonator (DR), 12,13 and substrate integrated waveguide (SIW) 14‐20 have been extensively studied in the past few years.…”

Filtering Power Divider With Ultrawide Stopband and Wideband Low Radiation Loss Using Substrate Integrated Defected Ground Structure

“…As a key component in modern wireless communication systems, the power divider with filtering function and wide stopband has drawn great attention recently. In [1]- [6], the substrate integrated waveguide (SIW) is proposed for the power-divider design with low radiation loss, which suffers from the narrow stopband. To extend the stopband bandwidth, the low-pass filter [7], stepped-impedance resonators (SIR) [8]- [11] and defected ground structure (DGS) [12]- [17] are proposed.…”

DESIGN OF A COMPACT 4-WAY POWER DIVIDER USING 1/64^th MODE ELLIPTICALLY CURVED SIW RESONATORS

“…Various techniques have been used to reduce the size of SIW based antennas, filters, power dividers, etc. [7][8][9][10][11]. A half-mode SIW (HMSIW), which occupies half the area of its full mode counterpart, is first introduced in [7] and later used in [8] to design compact SIW power divider.…”

“…Similarly, quarter-mode SIW (QMSIW) is used to miniaturize the antenna [9]. Also, QMSIW and 1/8th mode SIW (EMSIW) are used in [10,11] for miniaturization of SIW based devices without affecting the performance. The size of power divider is further reduced by using direct coaxial feeding, thereby eliminating the need for microstrip to SIW transition [13][14][15].…”