Design of canonic wave digital filters using Brune and matched 4-port adaptors

Wideband Multiport Matching Phase I: Single-Feed Multiport Antennas

“…Closely allied with this SIMO design is a six-channel wideband power divider by Czawka [11]. Jarmasz and Martens [24] apply a variant of this decoupling approach to wave digital filters. Finally, Cameron and Yu [6] offer several multiplexer topologies that can be applied to decoupling design.…”

Generalized Wave Digital Filter Realizations of Arbitrary Reciprocal Connection Networks

“…The method was initially based on a partition of the digraph representing the reference circuit into tree and cotree. It was later extended to accommodate more general reciprocal connection networks, which embed reciprocal multi-ports, such as ideal transformers [3]- [6]. Recently, an alternative approach, based on the Modified Nodal Analysis (MNA) [7]- [11], was developed for implementing in the WD domain arbitrary connection networks, which also contain active and non-reciprocal linear multiports, such as controlled sources, nullors, and gyrators.…”

“…Recently, an alternative approach, based on the Modified Nodal Analysis (MNA) [7]- [11], was developed for implementing in the WD domain arbitrary connection networks, which also contain active and non-reciprocal linear multiports, such as controlled sources, nullors, and gyrators. The MNA-based method discussed in [7] allows us to implement a larger class of WD junctions than the approach presented in [1], [5], [6] for the two following reasons. The former is that the MNA-based method accommodates both reciprocal and non-reciprocal connection networks in the WD domain, while the applicability of the method in [1], [5], [6] is limited to reciprocal connection networks.…”

“…The MNA-based method discussed in [7] allows us to implement a larger class of WD junctions than the approach presented in [1], [5], [6] for the two following reasons. The former is that the MNA-based method accommodates both reciprocal and non-reciprocal connection networks in the WD domain, while the applicability of the method in [1], [5], [6] is limited to reciprocal connection networks. The second reason is that the formulation of the method in [7] is based on a generalized definition of wave signals [12], which includes definitions of voltage, current and power-normalized waves of traditional WD Filters (WDFs) [13] as particular cases, while the results in [1], [5], [6] are limited to WDFs based on voltage waves.…”

“…The former is that the MNA-based method accommodates both reciprocal and non-reciprocal connection networks in the WD domain, while the applicability of the method in [1], [5], [6] is limited to reciprocal connection networks. The second reason is that the formulation of the method in [7] is based on a generalized definition of wave signals [12], which includes definitions of voltage, current and power-normalized waves of traditional WD Filters (WDFs) [13] as particular cases, while the results in [1], [5], [6] are limited to WDFs based on voltage waves. However, as outlined in [7], the method presented in [1], [5], [6] remains more efficient for realizing reciprocal connection networks in the WD domain.…”