This can be the position of your polyphase filters, which can be all-go filters and only modify the stage. The phase marriage amongst the two polyphase filters in this instance is these types of that it will compensate for that extra "twist" so the phase between the desired lower frequency https://pginsector15gurugram.mystrikingly.com/blog/book-modern-pg-for-boys-in-gurgaon-osmstays/i/view_as_owner