1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
|
//
// Copyright 2018 Ettus Research, a National Instruments Company
//
// SPDX-License-Identifier: GPL-3.0-or-later
//
#include "neon_constants.hpp"
#include "neon_radio_ctrl_impl.hpp"
#include <uhd/utils/math.hpp>
/*
* Neon frequency bands:
*
* For RX:
* Band Freq BSEL-210 BSEL-543 TX/RX RX2
* SEL_10 | FE_SEL_210 SEL_10
* chan 1 | chan 2
* -------------------------------------------------------------------------
* LB_B2: < 450 RF5 100 RF6 101 01 RF3 100 RF1 001 10
* LB_B3: 450-700 RF6 101 RF5 100 01 RF3 100 RF1 001 10
* LB_B4: 700-1200 RF3 010 RF4 011 01 RF3 100 RF1 001 10
* LB_B5: 1200-1800 RF4 011 RF3 010 01 RF3 100 RF1 001 10
* LB_B6: 1800-2350 RF1 000 RF2 001 01 RF3 100 RF1 001 10
* LB_B7: 2350-2600 RF2 001 RF1 000 01 RF3 100 RF1 001 10
* HB: 2600+ --- 111 --- 111 10 RF3 100 RF1 001 01
*
* SEL_1 SEL_0
* 1 0 ANT1(RX_HB)--TX/RX, ANT2(RX_LB)--RX
* 0 1 ANT1(RX_HB)--RX, ANT2(RX_LB)--TX/RX
*
* For TX:
* Band-Freq BSEL-210 BSEL-543 TX/RX
* FE_SEL_210
* chan 1 | chan 2
* ------------------------------------------------------------
* LB_80 < 117.7 RF7 011 RF8 111 RF1 001 RF3 100
* LB_160 117.7-178.2 RF8 111 RF7 011 RF1 001 RF3 100
* LB_225 178.2-284.3 RF5 001 RF6 101 RF1 001 RF3 100
* LB_400 284.3-453.7 RF6 101 RF5 001 RF1 001 RF3 100
* LB_575 453.7-723.8 RF3 010 RF4 110 RF1 001 RF3 100
* LB_1000 723.8-1154.9 RF4 110 RF3 010 RF1 001 RF3 100
* LB_1700 1154.9-1842.6 RF1 000 RF2 100 RF1 001 RF3 100
* LB_2750 1842.6-2940.0 RF2 100 RF1 000 RF1 001 RF3 100
* HB_5850 > 2490.0 --- --- --- --- RF2 010 RF2 010
*
*/
using namespace uhd;
using namespace uhd::usrp;
using namespace uhd::rfnoc;
using namespace uhd::math::fp_compare;
namespace {
/* Note on the RX filter bank:
*
* The RX path has 7 bands, which we call LB_B2, B3, .. HB same as
* the schematic.
*
* The following constants define lower cutoff frequencies for each band.
* LB_B2 does not have a lower cutoff frequency, it is implied by
* AD9361_MIN_FREQ. NEON_RX_BAND1_MIN_FREQ is the cutover frequency
* for switching from LB_B2 to LB_B3, and so on.
*
* Bands 1-6 have both high- and low-pass filters (effectively band
* passes). Frequencies need to be chosen to allow as much of the full
* bandwidth through unattenuated.
*/
constexpr double NEON_RX_LB_BAND3_MIN_FREQ = 450e6;
constexpr double NEON_RX_LB_BAND4_MIN_FREQ = 700e6;
constexpr double NEON_RX_LB_BAND5_MIN_FREQ = 1200e6;
constexpr double NEON_RX_LB_BAND6_MIN_FREQ = 1800e6;
constexpr double NEON_RX_LB_BAND7_MIN_FREQ = 2350e6;
constexpr double NEON_RX_HB_MIN_FREQ = 2600e6;
/* Note on the TX filter bank:
*
* The TX path has 9 bands, which we name according to the schematic.
*
* The following constants define lower cutoff frequencies for each band.
* LB_80 does not have a lower cutoff frequency, it is implied by
* AD9361_MIN_FREQ. NEON_TX_LB_160_MIN_FREQ is the cutover frequency
* for switching from LB_80 to LB_160, and so on.
*
* On current Neon revisions, all filters on the TX filter bank are
* low pass filters (no high pass filters).
* Frequencies need to be chosen to allow as much of the full bandwidth
* through unattenuated (so don't go all the way up to the cutoff frequency
* of that filter).
*/
constexpr double NEON_TX_LB_160_MIN_FREQ = 117.7e6;
constexpr double NEON_TX_LB_225_MIN_FREQ = 178.2e6;
constexpr double NEON_TX_LB_400_MIN_FREQ = 284.3e6;
constexpr double NEON_TX_LB_575_MIN_FREQ = 453.7e6;
constexpr double NEON_TX_LB_1000_MIN_FREQ = 723.8e6;
constexpr double NEON_TX_LB_1700_MIN_FREQ = 1154.9e6;
constexpr double NEON_TX_LB_2750_MIN_FREQ = 1842.6e6;
constexpr double NEON_TX_HB_MIN_FREQ = 2940.0e6;
} // namespace
neon_radio_ctrl_impl::rx_band neon_radio_ctrl_impl::_map_freq_to_rx_band(
const double freq)
{
neon_radio_ctrl_impl::rx_band band;
if (fp_compare_epsilon<double>(freq) < AD9361_RX_MIN_FREQ) {
band = rx_band::INVALID_BAND;
} else if (fp_compare_epsilon<double>(freq) < NEON_RX_LB_BAND3_MIN_FREQ) {
band = rx_band::LB_B2;
} else if (fp_compare_epsilon<double>(freq) < NEON_RX_LB_BAND4_MIN_FREQ) {
band = rx_band::LB_B3;
} else if (fp_compare_epsilon<double>(freq) < NEON_RX_LB_BAND5_MIN_FREQ) {
band = rx_band::LB_B4;
} else if (fp_compare_epsilon<double>(freq) < NEON_RX_LB_BAND6_MIN_FREQ) {
band = rx_band::LB_B5;
} else if (fp_compare_epsilon<double>(freq) < NEON_RX_LB_BAND7_MIN_FREQ) {
band = rx_band::LB_B6;
} else if (fp_compare_epsilon<double>(freq) < NEON_RX_HB_MIN_FREQ) {
band = rx_band::LB_B7;
} else if (fp_compare_epsilon<double>(freq) <= AD9361_RX_MAX_FREQ) {
band = rx_band::HB;
} else {
band = rx_band::INVALID_BAND;
}
return band;
}
neon_radio_ctrl_impl::tx_band neon_radio_ctrl_impl::_map_freq_to_tx_band(
const double freq)
{
neon_radio_ctrl_impl::tx_band band;
if (fp_compare_epsilon<double>(freq) < AD9361_TX_MIN_FREQ) {
band = tx_band::INVALID_BAND;
} else if (fp_compare_epsilon<double>(freq) < NEON_TX_LB_160_MIN_FREQ) {
band = tx_band::LB_80;
} else if (fp_compare_epsilon<double>(freq) < NEON_TX_LB_225_MIN_FREQ) {
band = tx_band::LB_160;
} else if (fp_compare_epsilon<double>(freq) < NEON_TX_LB_400_MIN_FREQ) {
band = tx_band::LB_225;
} else if (fp_compare_epsilon<double>(freq) < NEON_TX_LB_575_MIN_FREQ) {
band = tx_band::LB_400;
} else if (fp_compare_epsilon<double>(freq) < NEON_TX_LB_1000_MIN_FREQ) {
band = tx_band::LB_575;
} else if (fp_compare_epsilon<double>(freq) < NEON_TX_LB_1700_MIN_FREQ) {
band = tx_band::LB_1000;
} else if (fp_compare_epsilon<double>(freq) < NEON_TX_LB_2750_MIN_FREQ) {
band = tx_band::LB_1700;
} else if (fp_compare_epsilon<double>(freq) < NEON_TX_HB_MIN_FREQ) {
band = tx_band::LB_2750;
} else if (fp_compare_epsilon<double>(freq) <= AD9361_TX_MAX_FREQ) {
band = tx_band::HB;
} else {
band = tx_band::INVALID_BAND;
}
return band;
}
|
