Chip-cn-dat/Espressif-dat/ESP32-S3-DAT/ESP32-S3-DAT.md
... ...
@@ -15,7 +15,7 @@ for [[ESP32-S3-dat]] - [[ESP32-dat]] - [[HDK-dat]] - [[peripherals-dat]] - [[int
15 15
16 16
- [[ESP32-S3-app-DAT]]
17 17
18
-- [[wifi-dat]]
18
+- [[wifi-dat]] - [[antenna-wifi-dat]] - [[antenna-dat]]
19 19
20 20
21 21
## board
Tech-dat/antenna-dat/2023-10-27-15-41-39.png
... ...
Binary files a/Tech-dat/antenna-dat/2023-10-27-15-41-39.png and /dev/null differ
Tech-dat/antenna-dat/2023-10-27-15-42-27.png
... ...
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Tech-dat/antenna-dat/antenna-DAT.md
... ...
@@ -6,13 +6,12 @@
6 6
- [[VSWR-dat]] - [[bands-dat]] - [[frequency-dat]]
7 7
8 8
9
-- [[antenna-type-dat]] - [[antenna-design-dat]]
9
+- [[antenna-type-dat]] - [[antenna-design-dat]] - [[antenna-HDK-dat]]
10 10
11
-type of antennas by shape == [[antenna-T-dat]] - [[antenna-Whip-dat]] - [[antenna-spring-dat]]
11
+type of antennas by shape == [[antenna-type-dat]] - [[antenna-T-dat]] - [[antenna-Whip-dat]] - [[antenna-spring-dat]]
12 12
13 13
type of antennas by power == [[antenna-active-dat]] - [[antenna-passive-dat]]
14 14
15
-type of antennas by frequency == [[antenna-location-dat]] - [[antenna-GNSS-dat]] - [[GSM-antenna-GPS-dat]] - [[antenna-RF-dat]] - [[antenna-2.4G-dat]]
16 15
17 16
type of antennas by connector == - [[CONN-dat]] - [[CONN-SMA-dat]] - [[CONN-IPEX-dat]] - [[antenna-UFL-dat]]
18 17
... ...
@@ -24,6 +23,10 @@ type of antennas by connector == - [[CONN-dat]] - [[CONN-SMA-dat]] - [[CONN-IPEX
24 23
25 24
- [[antenna-wifi-dat]] - [[antenna-dat]]
26 25
26
+type of antennas by frequency == [[antenna-location-dat]] - [[antenna-GNSS-dat]] - [[GSM-antenna-GPS-dat]] - [[antenna-RF-dat]] - [[antenna-2.4G-dat]]
27
+
28
+- [[antenna-function-dat]] - [[antenna-location-dat]] - [[antenna-wifi-dat]]
29
+
27 30
28 31
29 32
# Antenna Comparison Table
... ...
@@ -63,13 +66,6 @@ SMA to IPEX converter cable
63 66
64 67
- [[antenna-design-dat]]
65 68
66
-## antenna shape, size and gain
67
-
68
-| type | rod | paddle |
69
-| -------- | ---------------------------- | ---------------------------- |
70
-| style | ![](2023-10-27-15-41-39.png) | ![](2023-10-27-15-42-27.png) |
71
-| gain | 2dbi | 8dbi |
72
-| Features | - | foldable |
73 69
74 70
75 71
## Connection Type
Tech-dat/antenna-dat/antenna-function-dat/antenna-function-dat.md
... ...
@@ -0,0 +1,10 @@
1
+
2
+
3
+# antenna-function-dat
4
+
5
+- [[antenna-dat]] - [[antenna-wifi-dat]] - [[antenna-location-dat]]
6
+
7
+
8
+
9
+## ref
10
+
Tech-dat/antenna-dat/antenna-function-dat/antenna-location-dat/antenna-GNSS-dat/2025-05-20-18-26-38.png
... ...
Binary files /dev/null and b/Tech-dat/antenna-dat/antenna-function-dat/antenna-location-dat/antenna-GNSS-dat/2025-05-20-18-26-38.png differ
Tech-dat/antenna-dat/antenna-function-dat/antenna-location-dat/antenna-GNSS-dat/antenna-GNSS-dat.md
... ...
@@ -0,0 +1,58 @@
1
+
2
+# antenna-GNSS-dat.md
3
+
4
+- [[antenna-GNSS-dat]] - [[CONN-SMA-dat]] - [[CONN-IPEX-dat]]
5
+
6
+
7
+## product
8
+
9
+- [[NAN1001-dat]]
10
+
11
+## info
12
+
13
+GNSS antenna are commonly using [[antenna-active-dat]]
14
+
15
+GNSS antenna of [[A7670-dat]]
16
+
17
+![](2025-05-20-18-26-38.png)
18
+
19
+
20
+
21
+
22
+## GNSS recommanded antenna specifications
23
+
24
+passive
25
+
26
+- Frequency Range: 1559–1609 MHz
27
+- Polarization: RHCP
28
+- VSWR: < 2 (Typ.)
29
+- Passive Antenna Gain: > 0 dBi
30
+
31
+active
32
+
33
+- Frequency Range: 1559–1609 MHz
34
+- Polarization: RHCP
35
+- VSWR: < 2 (Typ.)
36
+- Passive Antenna Gain: > 0 dBi
37
+- Active Antenna Noise Figure: < 1.5 dB
38
+- Active Antenna Total Gain: < 18 d
39
+
40
+
41
+
42
+
43
+
44
+
45
+表 28：GNSS 频率
46
+
47
+| type | frequencies | units |
48
+| ---------------- | --------------- | ----- |
49
+| GPS/Galileo/QZSS | 1575.42 ±1.023 | MHz |
50
+| GLONASS | 1597.5~1605.8 | MHz |
51
+| BeiDou | 1561.098 ±2.046 | MHz |
52
+
53
+
54
+
55
+## ref
56
+
57
+- [[antenna-dat]]
58
+
Tech-dat/antenna-dat/antenna-function-dat/antenna-location-dat/antenna-location-dat.md
... ...
@@ -0,0 +1,56 @@
1
+
2
+# antenna-location-dat
3
+
4
+- 1575.42Mhz
5
+
6
+GPS
7
+
8
+- [[NAN1001-dat]] - [[NAN1019-dat]] == both are active GPS antenna
9
+
10
+antenna connector - [[IPEX-dat]]
11
+
12
+
13
+## tuning
14
+
15
+1. Measuring GPS Antenna Performance (Signal Quality)
16
+
17
+To measure how well your GPS antenna performs (signal strength, accuracy, etc.):
18
+
19
+✅ Use GPS Diagnostic Apps or Tools: Android: Use apps like:
20
+
21
+- [GPS Test](https://play.google.com/store/search?q=gps%20test&c=apps&hl=en)
22
+- GPS Status & Toolbox
23
+
24
+2. Testing GPS Antenna Connection (for hardware troubleshooting)
25
+
26
+If you’re dealing with a custom GPS module (e.g., on a drone, Raspberry Pi, or embedded system), you may want to check if the antenna is electrically working:
27
+
28
+✅ Use a Multimeter:
29
+
30
+- Check for continuity in the antenna cable.
31
+- Measure voltage at the GPS antenna port (usually 3.3V or 5V for active antennas).
32
+- For active antennas (with a built-in amplifier), make sure power is being delivered.
33
+
34
+
35
+3. Physical Size / Frequency / Type Measurement
36
+
37
+If you're trying to measure or identify a GPS antenna for replacement or tuning:
38
+
39
+GPS Frequency bands:
40
+
41
+- L1: ~1575.42 MHz (most common)
42
+- L2: ~1227.60 MHz (for dual-band GPS)
43
+
44
+Use a **spectrum analyzer or antenna analyzer** to test bandwidth and impedance, if you're in a lab or technical environment.
45
+
46
+Measure **impedance** (should be 50 ohms) if connecting to a GPS receiver with RF tools.
47
+
48
+4. Antenna Position Tuning (for best reception)
49
+
50
+Use real-time tools to measure **signal changes based on position/orientation**. Walk around, move the device, or try different placements while watching satellite SNR and number of satellites.
51
+
52
+## ref
53
+
54
+- [[antenna-dat]]
55
+
56
+
Tech-dat/antenna-dat/antenna-function-dat/antenna-wifi-dat/2026-03-13-18-44-12.png
... ...
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... ...
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Tech-dat/antenna-dat/antenna-function-dat/antenna-wifi-dat/2026-03-13-18-45-00.png
... ...
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Tech-dat/antenna-dat/antenna-function-dat/antenna-wifi-dat/antenna-wifi-dat.md
... ...
@@ -0,0 +1,42 @@
1
+
2
+
3
+# antenna-wifi-dat
4
+
5
+- [[antenna-dat]] - [[wifi-dat]] - [[antenna-wifi-dat]]
6
+
7
+## rank
8
+
9
+
10
+12dBi WIFI
11
+
12
+
13
+When used with a repeater, a Wi-Fi antenna can connect to a desktop computer and can also be used with a phone. However, you need to know the router password and configure settings on the phone.
14
+
15
+It should not be too far from the router, generally no more than 3 meters. You can also connect directly to the router with an Ethernet cable.
16
+
17
+In obstacle-free conditions, the transmission distance can reach 200–300 meters.
18
+
19
+In other words, the receiving distance is short, while the transmitting distance is long.
20
+
21
+When used with a USB Wi-Fi adapter, a Wi-Fi antenna is suitable for laptops or desktop computers (not suitable for phones) and can receive Wi-Fi signals over long distances. In obstacle-free conditions, the range can reach 200–300 meters.
22
+
23
+![](2026-03-13-18-44-12.png)
24
+
25
+![](2026-03-13-18-44-27.png)
26
+
27
+![](2026-03-13-18-45-00.png)
28
+
29
+
30
+
31
+## demo and references
32
+
33
+https://x.com/i/status/2025020047861723433
34
+
35
+[[wifi-antenna-1.mp4]]
36
+
37
+
38
+## ref
39
+
40
+- [[antenna-dat]] - [[wifi-dat]] - [[antenna-wifi-dat]]
41
+
42
+- [[antenna]] - [[wifi]] - [[antenna-wifi]]
... ...
\ No newline at end of file
Tech-dat/antenna-dat/antenna-function-dat/antenna-wifi-dat/wifi-antenna-1.mp4
... ...
Binary files /dev/null and b/Tech-dat/antenna-dat/antenna-function-dat/antenna-wifi-dat/wifi-antenna-1.mp4 differ
Tech-dat/antenna-dat/antenna-purpose-dat/antenna-location-dat/antenna-GNSS-dat/2025-05-20-18-26-38.png
... ...
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Tech-dat/antenna-dat/antenna-purpose-dat/antenna-location-dat/antenna-GNSS-dat/antenna-GNSS-dat.md
... ...
@@ -1,58 +0,0 @@
1
-
2
-# antenna-GNSS-dat.md
3
-
4
-- [[antenna-GNSS-dat]] - [[CONN-SMA-dat]] - [[CONN-IPEX-dat]]
5
-
6
-
7
-## product
8
-
9
-- [[NAN1001-dat]]
10
-
11
-## info
12
-
13
-GNSS antenna are commonly using [[antenna-active-dat]]
14
-
15
-GNSS antenna of [[A7670-dat]]
16
-
17
-![](2025-05-20-18-26-38.png)
18
-
19
-
20
-
21
-
22
-## GNSS recommanded antenna specifications
23
-
24
-passive
25
-
26
-- Frequency Range: 1559–1609 MHz
27
-- Polarization: RHCP
28
-- VSWR: < 2 (Typ.)
29
-- Passive Antenna Gain: > 0 dBi
30
-
31
-active
32
-
33
-- Frequency Range: 1559–1609 MHz
34
-- Polarization: RHCP
35
-- VSWR: < 2 (Typ.)
36
-- Passive Antenna Gain: > 0 dBi
37
-- Active Antenna Noise Figure: < 1.5 dB
38
-- Active Antenna Total Gain: < 18 d
39
-
40
-
41
-
42
-
43
-
44
-
45
-表 28：GNSS 频率
46
-
47
-| type | frequencies | units |
48
-| ---------------- | --------------- | ----- |
49
-| GPS/Galileo/QZSS | 1575.42 ±1.023 | MHz |
50
-| GLONASS | 1597.5~1605.8 | MHz |
51
-| BeiDou | 1561.098 ±2.046 | MHz |
52
-
53
-
54
-
55
-## ref
56
-
57
-- [[antenna-dat]]
58
-
Tech-dat/antenna-dat/antenna-purpose-dat/antenna-location-dat/antenna-location-dat.md
... ...
@@ -1,56 +0,0 @@
1
-
2
-# antenna-location-dat
3
-
4
-- 1575.42Mhz
5
-
6
-GPS
7
-
8
-- [[NAN1001-dat]] - [[NAN1019-dat]] == both are active GPS antenna
9
-
10
-antenna connector - [[IPEX-dat]]
11
-
12
-
13
-## tuning
14
-
15
-1. Measuring GPS Antenna Performance (Signal Quality)
16
-
17
-To measure how well your GPS antenna performs (signal strength, accuracy, etc.):
18
-
19
-✅ Use GPS Diagnostic Apps or Tools: Android: Use apps like:
20
-
21
-- [GPS Test](https://play.google.com/store/search?q=gps%20test&c=apps&hl=en)
22
-- GPS Status & Toolbox
23
-
24
-2. Testing GPS Antenna Connection (for hardware troubleshooting)
25
-
26
-If you’re dealing with a custom GPS module (e.g., on a drone, Raspberry Pi, or embedded system), you may want to check if the antenna is electrically working:
27
-
28
-✅ Use a Multimeter:
29
-
30
-- Check for continuity in the antenna cable.
31
-- Measure voltage at the GPS antenna port (usually 3.3V or 5V for active antennas).
32
-- For active antennas (with a built-in amplifier), make sure power is being delivered.
33
-
34
-
35
-3. Physical Size / Frequency / Type Measurement
36
-
37
-If you're trying to measure or identify a GPS antenna for replacement or tuning:
38
-
39
-GPS Frequency bands:
40
-
41
-- L1: ~1575.42 MHz (most common)
42
-- L2: ~1227.60 MHz (for dual-band GPS)
43
-
44
-Use a **spectrum analyzer or antenna analyzer** to test bandwidth and impedance, if you're in a lab or technical environment.
45
-
46
-Measure **impedance** (should be 50 ohms) if connecting to a GPS receiver with RF tools.
47
-
48
-4. Antenna Position Tuning (for best reception)
49
-
50
-Use real-time tools to measure **signal changes based on position/orientation**. Walk around, move the device, or try different placements while watching satellite SNR and number of satellites.
51
-
52
-## ref
53
-
54
-- [[antenna-dat]]
55
-
56
-
Tech-dat/antenna-dat/antenna-type-dat/2024-11-08-19-14-19.png
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Tech-dat/antenna-dat/antenna-type-dat/2024-11-08-19-14-48.png
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Tech-dat/antenna-dat/antenna-type-dat/Antenna-T-dat/Antenna-T-dat.md
... ...
@@ -1,5 +1,8 @@
1 1
2
-# T-antenna-dat
2
+# Antenna-T-dat
3
+
4
+
5
+- [[NAN1011-dat]] - [[Antenna-T-dat]]
3 6
4 7
- **Type:** T-style Dipole Antenna (a.k.a. T-antenna)
5 8
... ...
@@ -17,3 +20,6 @@
17 20
- Horizontally extended elements
18 21
19 22
23
+## ref
24
+
25
+
Tech-dat/antenna-dat/antenna-type-dat/antenna-ceramic-dat/2024-11-08-19-14-19.png
... ...
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Tech-dat/antenna-dat/antenna-type-dat/antenna-ceramic-dat/antenna-ceramic-dat.md
... ...
@@ -17,6 +17,13 @@ JOHANSON(约翰逊)
17 17
18 18
![](2026-02-10-13-45-49.png)
19 19
20
+## PCB antenna
21
+
22
+![](2024-11-08-19-14-19.png)
23
+
24
+![](2024-11-08-19-14-48.png)
25
+
26
+
20 27
21 28
22 29
## ref
Tech-dat/antenna-dat/antenna-type-dat/antenna-type-dat.md
... ...
@@ -4,16 +4,16 @@
4 4
5 5
- [[antenna-dat]]
6 6
7
-- [[antenna-ceramic-dat]] - [[antenna-lolipop-dat]] - [[antenna-spring-dat]] - [[antenna-T-dat]] - [[antenna-whip-dat]]
7
+- [[antenna-ceramic-dat]] - [[antenna-lolipop-dat]]
8 8
9
+- [[antenna-spring-dat]]
9 10
11
+- [[antenna-T-dat]]
10 12
13
+- [[antenna-whip-dat]]
11 14
12
-## PCB antenna
13 15
14
-![](2024-11-08-19-14-19.png)
15 16
16
-![](2024-11-08-19-14-48.png)
17 17
18 18
19 19
## SMA antenna
Tech-dat/antenna-dat/antenna-type-dat/antenna-whip-dat/2023-10-27-15-41-39.png
... ...
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Tech-dat/antenna-dat/antenna-type-dat/antenna-whip-dat/2023-10-27-15-42-27.png
... ...
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Tech-dat/antenna-dat/antenna-type-dat/antenna-whip-dat/antenna-whip-dat.md
... ...
@@ -1,6 +1,13 @@
1 1
2 2
# antenna-whip-dat
3 3
4
+
5
+type of antennas by shape == [[antenna-type-dat]] - [[antenna-T-dat]] - [[antenna-Whip-dat]] - [[antenna-spring-dat]]
6
+
7
+
8
+
9
+== antenna rod
10
+
4 11
- **Type:** Whip Antenna (Monopole)
5 12
6 13
- **Features:**
... ...
@@ -16,6 +23,20 @@
16 23
- Slim vertical rod inside heat shrink tubing
17 24
18 25
26
+
27
+
28
+## antenna shape, size and gain
29
+
30
+| type | rod | paddle |
31
+| -------- | ---------------------------- | ---------------------------- |
32
+| style | ![](2023-10-27-15-41-39.png) | ![](2023-10-27-15-42-27.png) |
33
+| gain | 2dbi | 8dbi |
34
+| Features | - | foldable |
35
+
36
+
37
+
38
+
39
+
19 40
## ref
20 41
21 42
- [[antenna-dat]]
... ...
\ No newline at end of file
Tech-dat/antenna-dat/antenna-wifi-dat/2026-03-13-18-44-12.png
... ...
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Tech-dat/antenna-dat/antenna-wifi-dat/2026-03-13-18-44-27.png
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Tech-dat/antenna-dat/antenna-wifi-dat/2026-03-13-18-45-00.png
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Tech-dat/antenna-dat/antenna-wifi-dat/antenna-wifi-dat.md
... ...
@@ -1,42 +0,0 @@
1
-
2
-
3
-# antenna-wifi-dat
4
-
5
-- [[antenna-dat]] - [[wifi-dat]] - [[antenna-wifi-dat]]
6
-
7
-## rank
8
-
9
-
10
-12dBi WIFI
11
-
12
-
13
-When used with a repeater, a Wi-Fi antenna can connect to a desktop computer and can also be used with a phone. However, you need to know the router password and configure settings on the phone.
14
-
15
-It should not be too far from the router, generally no more than 3 meters. You can also connect directly to the router with an Ethernet cable.
16
-
17
-In obstacle-free conditions, the transmission distance can reach 200–300 meters.
18
-
19
-In other words, the receiving distance is short, while the transmitting distance is long.
20
-
21
-When used with a USB Wi-Fi adapter, a Wi-Fi antenna is suitable for laptops or desktop computers (not suitable for phones) and can receive Wi-Fi signals over long distances. In obstacle-free conditions, the range can reach 200–300 meters.
22
-
23
-![](2026-03-13-18-44-12.png)
24
-
25
-![](2026-03-13-18-44-27.png)
26
-
27
-![](2026-03-13-18-45-00.png)
28
-
29
-
30
-
31
-## demo and references
32
-
33
-https://x.com/i/status/2025020047861723433
34
-
35
-[[wifi-antenna-1.mp4]]
36
-
37
-
38
-## ref
39
-
40
-- [[antenna-dat]] - [[wifi-dat]] - [[antenna-wifi-dat]]
41
-
42
-- [[antenna]] - [[wifi]] - [[antenna-wifi]]
... ...
\ No newline at end of file
Tech-dat/antenna-dat/antenna-wifi-dat/wifi-antenna-1.mp4
... ...
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Tech-dat/memory-dat/eeprom-dat/eeprom-dat.md
... ...
@@ -42,7 +42,7 @@ It connected to the same IIC port with DAC. you need to solder the IC and Confir
42 42
43 43
- cheaper alternatives == [[BL24C256-dat]] in [[beling-dat]]
44 44
45
-
45
+`24AA04`/24LC04B/24FC04 - 4K I2C Serial EEPROM
46 46
47 47
## unsort
48 48
Tech-dat/tech-dat.md
... ...
@@ -176,7 +176,7 @@
176 176
177 177
- [[serial-dat]] - [[serial-wireless-dat]]
178 178
179
-- [[memory-dat]] - [[flash-dat]] - [[sd-dat]]
179
+- [[memory-dat]] - [[flash-dat]] - [[sd-dat]] - [[eeprom-dat]]
180 180
181 181
- [[signal-dat]] - [[analog-dat]] - [[digital-dat]] - [[data-storage-dat]]
182 182