GNU Radio 3.7.1 C++ API
hilbert_fc.h
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1 /* -*- c++ -*- */
2 /*
3  * Copyright 2004,2012 Free Software Foundation, Inc.
4  *
5  * This file is part of GNU Radio
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7  * GNU Radio is free software; you can redistribute it and/or modify
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22 
23 #ifndef INCLUDED_FILTER_HILBERT_FC_H
24 #define INCLUDED_FILTER_HILBERT_FC_H
25 
26 #include <gnuradio/filter/api.h>
27 #include <gnuradio/sync_block.h>
28 #include <gnuradio/types.h>
29 
30 namespace gr {
31  namespace filter {
32 
33  /*!
34  * \brief Hilbert transformer.
35  * \ingroup filter_blk
36  *
37  * \details
38  * real output is input appropriately delayed.
39  * imaginary output is hilbert filtered (90 degree phase shift)
40  * version of input.
41  */
42  class FILTER_API hilbert_fc : virtual public sync_block
43  {
44  public:
45  // gr::filter::hilbert_fc::sptr
47 
48  /*!
49  * Build a Hilbert transformer filter block.
50  */
51  static sptr make(unsigned int ntaps);
52  };
53 
54  } /* namespace filter */
55 } /* namespace gr */
56 
57 #endif /* INCLUDED_FILTER_HILBERT_FC_H */