We　present　recent　results　of　an　investigation　into　the　microstrip　pseudo-interdigital　bandpass　filters　using　a　full-wave　electromagnetic　(EM)　simulator.　Coupling　characteristics　of　the　pseudo-interdigital　resonators　are　modeled　and　compared　with　the　conventional　coupled　hairpin　resonators.　It　has　been　shown　that　the　pseudo-interdigital　resonators　not　only　allow　local　cross-coupling,　but　also　allow　a　wider　range　of　couplings　to　be　realized　within　a　compact　structure.　A　pseudo-interdigital　bandpass　filter　composed　of　pairs　of　the　proposed　pseudo-interdigital　resonators　was　designed　to　have　a　25%　fraction　bandwidth　at　2.0　GHz.　Convergence　issues　of　the　simulations　of　the　filter　are　addressed.　The　filter　was　fabricated　and　tested.　The　measured　results　are　presented　in　comparison　with　the　simulated　ones.　©　1997　John　Wiley　&　Sons,　Inc.