GNU Radio 3.7.1 C++ API
pll_refout_cc.h
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00001 /* -*- c++ -*- */
00002 /*
00003  * Copyright 2004,2011,2012 Free Software Foundation, Inc.
00004  *
00005  * This file is part of GNU Radio
00006  *
00007  * GNU Radio is free software; you can redistribute it and/or modify
00008  * it under the terms of the GNU General Public License as published by
00009  * the Free Software Foundation; either version 3, or (at your option)
00010  * any later version.
00011  *
00012  * GNU Radio is distributed in the hope that it will be useful,
00013  * but WITHOUT ANY WARRANTY; without even the implied warranty of
00014  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
00015  * GNU General Public License for more details.
00016  *
00017  * You should have received a copy of the GNU General Public License
00018  * along with GNU Radio; see the file COPYING.  If not, write to
00019  * the Free Software Foundation, Inc., 51 Franklin Street,
00020  * Boston, MA 02110-1301, USA.
00021  */
00022 
00023 #ifndef INCLUDED_ANALOG_PLL_REFOUT_CC_H
00024 #define INCLUDED_ANALOG_PLL_REFOUT_CC_H
00025 
00026 #include <gnuradio/analog/api.h>
00027 #include <gnuradio/blocks/control_loop.h>
00028 #include <gnuradio/sync_block.h>
00029 
00030 namespace gr {
00031   namespace analog {
00032     
00033     /*!
00034      * \brief Implements a PLL which locks to the input frequency and outputs a carrier
00035      * \ingroup synchronizers_blk
00036      *
00037      * \details
00038      * Input stream 0: complex
00039      * Output stream 0: complex
00040      *
00041      * This PLL locks onto a [possibly noisy] reference carrier on the
00042      * input and outputs a clean version which is phase and frequency
00043      * aligned to it.
00044      *
00045      * All settings max_freq and min_freq are in terms of radians per
00046      * sample, NOT HERTZ. The loop bandwidth determins the lock range
00047      * and should be set around pi/200 -- 2pi/100.  \sa
00048      * pll_freqdet_cf, pll_carriertracking_cc
00049      */
00050     class ANALOG_API pll_refout_cc 
00051       : virtual public sync_block,
00052         virtual public blocks::control_loop
00053     {
00054     public:
00055       // gr::analog::pll_refout_cc::sptr
00056       typedef boost::shared_ptr<pll_refout_cc> sptr;
00057       
00058       /* \brief Make PLL block that outputs the tracked carrier signal.
00059        *
00060        * \param loop_bw: control loop's bandwidth parameter.
00061        * \param max_freq: maximum (normalized) frequency PLL will lock to.
00062        * \param min_freq: minimum (normalized) frequency PLL will lock to.
00063        */
00064       static sptr make(float loop_bw, float max_freq, float min_freq);
00065     };
00066 
00067   } /* namespace analog */
00068 } /* namespace gr */
00069 
00070 #endif /* INCLUDED_ANALOG_PLL_REFOUT_CC_H */