pll_refout_cc.h

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/* -*- c++ -*- */
/*
 * Copyright 2004,2011,2012 Free Software Foundation, Inc.
 *
 * This file is part of GNU Radio
 *
 * GNU Radio is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 3, or (at your option)
 * any later version.
 *
 * GNU Radio is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with GNU Radio; see the file COPYING.  If not, write to
 * the Free Software Foundation, Inc., 51 Franklin Street,
 * Boston, MA 02110-1301, USA.
 */
 
#ifndef INCLUDED_ANALOG_PLL_REFOUT_CC_H
#define INCLUDED_ANALOG_PLL_REFOUT_CC_H
 
#include <gnuradio/analog/api.h>
#include <gnuradio/blocks/control_loop.h>
#include <gnuradio/sync_block.h>
 
namespace gr {
namespace analog {
 
/*!
 * \brief Implements a PLL which locks to the input frequency and outputs a carrier
 * \ingroup synchronizers_blk
 *
 * \details
 * Input stream 0: complex
 * Output stream 0: complex
 *
 * This PLL locks onto a [possibly noisy] reference carrier on the
 * input and outputs a clean version which is phase and frequency
 * aligned to it.
 *
 * All settings max_freq and min_freq are in terms of radians per
 * sample, NOT HERTZ. The loop bandwidth determines the lock range
 * and should be set around pi/200 -- 2pi/100.  \sa
 * pll_freqdet_cf, pll_carriertracking_cc
 */
class ANALOG_API pll_refout_cc : virtual public sync_block,
                                 virtual public blocks::control_loop
{
public:
    // gr::analog::pll_refout_cc::sptr
    typedef boost::shared_ptr<pll_refout_cc> sptr;
 
    /* \brief Make PLL block that outputs the tracked carrier signal.
     *
     * \param loop_bw: control loop's bandwidth parameter.
     * \param max_freq: maximum (normalized) frequency PLL will lock to.
     * \param min_freq: minimum (normalized) frequency PLL will lock to.
     */
    static sptr make(float loop_bw, float max_freq, float min_freq);
};
 
} /* namespace analog */
} /* namespace gr */
 
#endif /* INCLUDED_ANALOG_PLL_REFOUT_CC_H */