Novel broadband coupler based on corrugated half mode substrate integrated waveguide

Abstract

In this letter, a broadband coupler is presented that makes use of a corrugated half mode substrate integrated waveguide (CHMSIW) technique using a printed circuit board process. The coupler is realized by parallel CHMSIW lines where the vias to form the sidewalls of the HMSIW are placed with the open-circuit quarter-wave-length microstrip stubs and the energy couples by magnetic field. Compared with conventional SIW coupler, it is easily integrated with active devices because it can isolate better the CHMSIW input/output ports from the ground plane. The coupler is simulated and measured at 9.5-17.5 GHz. The result of measurement shows a good agreement with the result of simulation.

A six‐port network based on substrate integrated waveguide coupler with metal strips

“…By splitting SIW along its middle longitudinal section, we can gain two HMSIWs and the longitudinal section can be regarded as the equivalent magnetic wall. Existing HMSIW coupling structures are always realised by creating holes on the common equivalent electrical wall of two in-plane HMSIWs or shared plane of two vertically stacked HMSIWs [7][8][9][10]. In this study, all the work is done with the help of simulation software Empire for optimising the parameters of couplers and six-port network.…”

“…In [8], based on the principle of tradition of 180 hybrid ring coupler, a HMSIW ring coupler is designed. In [9], a corrugated HMSIW broadband coupler using a printed circuit broad process is presented. It is easily integrated with active devices due to better isolation of the CHMSIW input/output ports from the ground.…”

Design of a Compact 5.7-5.9 GHZ Filter Based on CRLH Resonator Units

“…Hence, the design of compact sub-6G filters is a hot research topic for mobile portable devices. Substrate integrated waveguide (SIW) is widely used in RF passive device designs due to low loss, low cost, and flexibility of integration properties, such as filter [1][2][3][4][5][6], antenna [7][8][9][10][11], phase shifter [12][13][14][15][16], power divider [17][18][19][20][21], and coupler [22][23][24][25][26]. However, SIW filters under 6 GHz is still outsize to meet the requirement of portable communication devices because of the long wavelength.…”