Tables of Intermods in ALFA/pdev/wapps from radars.

16may05

Links:
Pdev intermods in first mixer
Pdev intermods in bbmixer lo=175, skyfreq=1450
Pdev intermods in bbmixer lo=325, skyfreq=1300
Wapp intemods in first mixer

Intro:

The intermods in the mixers from the radars were computed:

Intermods were computed up to the 10th order.
pdev using 1375 Cfr, 175, 325 if2 center frequencies

intermods from the first mixer
intermods from the 2nd mixer (175 and 325 Mhz IF bands).

Wapps using 1385 Cfr 100 Mhz bandwidth (alfalfa)

intermods from the first mixer.

RADAR	Frequencies
PuntaSalinas mode A	1232.6/1247.6, 1241.7/1256.7
aerostat	1241.7/1256.7, 1246.2/1261.2
Remy radar	1270, 1290
Faa Radar	1330, 1350

Note that punta Salinas and the aerostat have overlapping frequencies.

Settings used:

Alfa band center = Rf =1375 Mhz, (lo1=1625), ifBand center=250 Mhz.
pdev if band 1=175 (1450 band)
pdev if band 2=325 (1300 band)
Wapp band center Rf=1385 (lo1=1635), if band center = 250 Mhz
Compute up to the 10th order intermod
for the baseband mixer output include + and - frequencies.

Pdev intermods in 1st mixer (top)

ALFA CFR=1375 Radar Intermods in 1st mixer
Radar	Radar Freq	order 1st Lo	order RdrFreq	IF Freq	Sky Freq
Punta Salinas	1232.6	4	5	337.0	1288.0
		6	8	110.8	1514.2
		7	9	281.6	1343.4
	1241.7	4	5	291.5	1333.5
		6	8	183.6	1441.4
		7	9	199.7	1425.3
	1247.6	3	4	115.4	1509.6
		4	5	262.0	1363.0
		6	8	230.8	1394.2
		7	9	146.6	1478.4
	1256.7	3	4	151.8	1473.2
		4	5	216.5	1408.5
		6	8	303.6	1321.4
Aerostat	1241.7	4	5	291.5	1333.5
		6	8	183.6	1441.4
		7	9	199.7	1425.3
	1246.2	3	4	109.8	1515.2
		4	5	269.0	1356.0
		6	8	219.6	1405.4
		7	9	159.2	1465.8
	1256.7	3	4	151.8	1473.2
		4	5	216.5	1408.5
		6	8	303.6	1321.4
	1261.2	3	4	170.0	1455.0
		4	5	193.8	1431.2
		6	8	340.0	1285.0
		8	10	387.5	1237.5
Remy Radar	1270.0	3	4	205.0	1420.0
		4	5	150.0	1475.0
		8	10	300.0	1325.0
	1290.0	3	4	285.0	1340.0
		5	6	385.0	1240.0
		7	9	235.0	1390.0
		8	10	100.0	1525.0
FAA radar	1330.0	4	5	150.0	1475.0
		5	6	145.0	1480.0
		8	10	300.0	1325.0
	1350.0	4	5	250.0	1375.0
	1350.0	6	7	300.0	1325.0

Pdev intermods in the bbm (lo=175, cfr=1450 Mhz) (top)

ALFA CFR=1375 Radar Intermods in 2nd mixer.
Band=1450.0 (175 IF)
Radar	Radar Freq	IF Freq	order 2ndLo	order Radar	baseband Freq	skyFreq +	skyFreq -
Punta Salinas	1232.60	392.40	2	1	-42.4	1492.4	1407.6
			4	2	-84.8	1534.8	1365.2
			7	3	47.8	1402.2	1497.8
			9	4	5.4	1444.6	1455.4
	1241.70	383.30	2	1	-33.3	1483.3	1416.7
			4	2	-66.6	1516.6	1383.4
			7	3	75.1	1374.9	1525.1
			9	4	41.8	1408.2	1491.8
	1247.60	377.40	2	1	-27.4	1477.4	1422.6
			4	2	-54.8	1504.8	1395.2
			6	3	-82.2	1532.2	1367.8
			9	4	65.4	1384.6	1515.4
	1256.70	368.30	2	1	-18.3	1468.3	1431.7
			4	2	-36.6	1486.6	1413.4
			6	3	-54.9	1504.9	1395.1
			8	4	-73.2	1523.2	1376.8
Aerostat	1241.70	383.30	2	1	-33.3	1483.3	1416.7
			4	2	-66.6	1516.6	1383.4
			7	3	75.1	1374.9	1525.1
			9	4	41.8	1408.2	1491.8
	1246.20	378.80	2	1	-28.8	1478.8	1421.2
			4	2	-57.6	1507.6	1392.4
			9	4	59.8	1390.2	1509.8
	1256.70	368.30	2	1	-18.3	1468.3	1431.7
			4	2	-36.6	1486.6	1413.4
			6	3	-54.9	1504.9	1395.1
			8	4	-73.2	1523.2	1376.8
	1261.25	363.75	2	1	-13.8	1463.8	1436.2
			4	2	-27.5	1477.5	1422.5
			6	3	-41.2	1491.2	1408.8
			8	4	-55.0	1505.0	1395.0
			10	5	-68.8	1518.8	1381.2
Remy Radar	1270.00	355.00	2	1	-5.0	1455.0	1445.0
			4	2	-10.0	1460.0	1440.0
			6	3	-15.0	1465.0	1435.0
			8	4	-20.0	1470.0	1430.0
			10	5	-25.0	1475.0	1425.0
	1290.00	335.00	2	1	15.0	1435.0	1465.0
			4	2	30.0	1420.0	1480.0
			6	3	45.0	1405.0	1495.0
			8	4	60.0	1390.0	1510.0
			10	5	75.0	1375.0	1525.0
FAA Radar	1330.00	295.00	2	1	55.0	1395.0	1505.0
			3	2	-65.0	1515.0	1385.0
			5	3	-10.0	1460.0	1440.0
			7	4	45.0	1405.0	1495.0
			8	5	-75.0	1525.0	1375.0
			10	6	-20.0	1470.0	1430.0
	1350.00	275.00	2	1	75.0	1375.0	1525.0
			3	2	-25.0	1475.0	1425.0
			5	3	50.0	1400.0	1500.0
			6	4	-50.0	1500.0	1400.0
			8	5	25.0	1425.0	1475.0
			9	6	-75.0	1525.0	1375.0

Pdev intermods in the bbm (lo=325,cfr=1300 Mhz) (top)

ALFA CFR=1375 Radar Intermods in 2nd mixer.
Band=1300.0 (325 IF)
Radar	Radar Freq	IF Freq	order 2ndLo	order Radar	baseband Freq	skyFreq +	skyFreq -
Punta Salinas	1232.60	392.40	5	4	55.4	1244.6	1355.4
			6	5	-12.0	1312.0	1288.0
			7	6	-79.4	1379.4	1220.6
	1241.70	383.30	6	5	33.5	1266.5	1333.5
			7	6	-24.8	1324.8	1275.2
			8	7	-83.1	1383.1	1216.9
	1247.60	377.40	6	5	63.0	1237.0	1363.0
			7	6	10.6	1289.4	1310.6
			8	7	-41.8	1341.8	1258.2
	1256.70	368.30	7	6	65.2	1234.8	1365.2
			8	7	21.9	1278.1	1321.9
			9	8	-21.4	1321.4	1278.6
			10	9	-64.7	1364.7	1235.3
Aerostat	1241.70	383.30	6	5	33.5	1266.5	1333.5
			7	6	-24.8	1324.8	1275.2
			8	7	-83.1	1383.1	1216.9
	1246.20	378.80	6	5	56.0	1244.0	1356.0
			7	6	2.2	1297.8	1302.2
			8	7	-51.6	1351.6	1248.4
	1256.70	368.30	7	6	65.2	1234.8	1365.2
			8	7	21.9	1278.1	1321.9
			9	8	-21.4	1321.4	1278.6
			10	9	-64.7	1364.7	1235.3
	1261.25	363.75	2	2	-77.5	1377.5	1222.5
			8	7	53.8	1246.2	1353.8
			9	8	15.0	1285.0	1315.0
			10	9	-23.8	1323.8	1276.2
Remy Radar	1270.00	355.00	2	2	-60.0	1360.0	1240.0
			9	8	85.0	1215.0	1385.0
			10	9	55.0	1245.0	1355.0
	1290.00	335.00	2	2	-20.0	1320.0	1280.0
			3	3	-30.0	1330.0	1270.0
			4	4	-40.0	1340.0	1260.0
			5	5	-50.0	1350.0	1250.0
			6	6	-60.0	1360.0	1240.0
			7	7	-70.0	1370.0	1230.0
			8	8	-80.0	1380.0	1220.0
FAA Radar	1330.00	295.00	2	2	60.0	1240.0	1360.0
			7	8	85.0	1215.0	1385.0
			8	9	55.0	1245.0	1355.0
			9	10	25.0	1275.0	1325.0
	1350.00	275.00	4	5	75.0	1225.0	1375.0
			5	6	25.0	1275.0	1325.0
			6	7	-25.0	1325.0	1275.0
			7	8	-75.0	1375.0	1225.0

Wapp intermods in the 1st mixer

Bold sky frequencies are in the 100 Mhz alfalfa band (1335-1435)

ALFA CFR=1385 Radar Intermods with 1st mixer
Radar	Radar Freq	order 1st Lo	order RdrFreq	IF Freq	Sky Freq
Punta Salinas	1232.6	4	5	377.0	1258.0
	1232.6	7	9	351.6	1283.4
	1241.7	4	5	331.5	1303.5
		6	8	123.6	1511.4
		7	9	269.7	1365.3
	1247.6	4	5	302.0	1333.0
		6	8	170.8	1464.2
		7	9	216.6	1418.4
	1256.7	3	4	121.8	1513.2
		4	5	256.5	1378.5
		6	8	243.6	1391.4
		7	9	134.7	1500.3
aerostat	1241.7	4	5	331.5	1303.5
		6	8	123.6	1511.4
		7	9	269.7	1365.3
	1246.2	4	5	309.0	1326.0
		6	8	159.6	1475.4
		7	9	229.2	1405.8
	1256.7	3	4	121.8	1513.2
		4	5	256.5	1378.5
		6	8	243.6	1391.4
		7	9	134.7	1500.3
	1261.2	3	4	140.0	1495.0
		4	5	233.8	1401.2
		6	8	280.0	1355.0
REMY Radar	1270.0	3	4	175.0	1460.0
		4	5	190.0	1445.0
		6	8	350.0	1285.0
		8	10	380.0	1255.0
	1290.0	3	4	255.0	1380.0
		7	9	165.0	1470.0
		8	10	180.0	1455.0
FAA Radar	1330.0	4	5	110.0	1525.0
		5	6	195.0	1440.0
		8	10	220.0	1415.0
	1350.0	4	5	210.0	1425.0
	1350.0	6	7	360.0	1275.0

processing: x101/090430/intermods_bld.pro