Tipe Antenna - Revision history

Onnowpurbo: /* Grid antenna */

2022-11-23T04:18:56Z

Grid antenna

Onnowpurbo: /* Parabolic or dish antenna */

2022-11-23T04:17:42Z

Parabolic or dish antenna

Onnowpurbo: /* Yagi antenna */

2022-11-23T04:06:25Z

Yagi antenna

Onnowpurbo: /* Sector antenna */

2022-11-23T02:50:40Z

Sector antenna

Onnowpurbo: /* Patch antenna, microstrip antenna */

2022-11-23T02:48:22Z

Patch antenna, microstrip antenna

Onnowpurbo: /* Directional antenna */

2022-11-23T02:45:02Z

Directional antenna

Onnowpurbo: /* Dipole antennas, rubber ducky */

2022-11-23T02:40:30Z

Dipole antennas, rubber ducky

Onnowpurbo: /* Dipole antennas, rubber ducky */

2022-11-23T02:40:20Z

Dipole antennas, rubber ducky

Onnowpurbo at 02:35, 23 November 2022

2022-11-23T02:35:14Z

Onnowpurbo at 02:32, 23 November 2022

2022-11-23T02:32:21Z

← Older revision		Revision as of 04:18, 23 November 2022
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	==Grid antenna==		==Grid antenna==
−	A variation of the dish is the grid antenna. Given that a parabolic reflector will present a large solid surface to the wind, it follows that high or even moderate wind conditions will cause the dish to move out of alignment or deform. To prevent this from happening, the reflector is perforated into a grid. The spacing of the grid elements is frequency dependent; it is inversely proportional to the frequency. Gain and beamwidth are similar to the parabolic antenna.

		+	Sebuah variasi piringan adalah antena grid. Masalahnya reflektor parabola akan menyajikan permukaan padat yang besar menghalangi angin, maka kondisi angin yang tinggi atau bahkan sedang akan menyebabkan piringan bergerak tidak sejajar atau berubah bentuk. Untuk mencegah hal ini terjadi, reflektor dilubangi menjadi kisi-kisi. Spasi elemen grid bergantung pada frekuensi; berbanding terbalik dengan frekuensi. Gain dan beamwidth mirip dengan antena parabola.

	==Referensi==		==Referensi==

@@ Line 35: / Line 35: @@
 Antena directional yang umum digunakan adalah Array Yagi-Uda, biasanya hanya disebut Yagi. Ini ditemukan oleh Shintaro Uda dan rekannya, Hidetsugu Yagi, pada tahun 1926. Sebuah antena Yagi menggunakan beberapa elemen untuk membentuk sebuah directional array. Driven element tunggal, biasanya dipole, menyebarkan energi RF; elemen yang ditempatkan tepat di depan dan di belakang elemen yang digerakkan memancarkan ulang energi RF in phase and out of phase, enhancing dan retarding signal. Unsur-unsur tersebut disebut unsur parasit; elemen di belakang driven elemen disebut reflektor, sedangkan elemen di depan elemen driven disebut director. Antena Yagi memiliki beamwidth dalam kisaran 30 hingga 80 derajat dan dapat memberikan penguatan pasif lebih dari 10 dBi.
-==Parabolic or dish antenna==
+==Parabolic atau dish antenna==
-Parabolic, or dish, antennas are the most familiar type of directional antenna. A parabola is a symmetric curve; a parabolic reflector is a surface that describes that curve throughout a 360-degree rotation—a dish or, to use the technical term, a paraboloid. A parabolic reflector has a high degree of directivity and has the ability to focus RF energy into a beam, much like a flashlight. Parabolic antennas have a very narrow beamwidth, usually not exceeding 25 degrees. Gain is dependent on diameter and frequency; at 2.4 GHz, a 1 meter dish will provide about 26 dBi gain, while a 10 meter antenna will provide 46 dBi gain at the same frequency. The antenna is “fed” by either a half wave dipole antenna or a feed horn. Parabolic antennas are used for long distance communication links between buildings or over large geographic areas. Very large parabolic antennas are used for radio astronomy and can provide gain of 10 million or about 70 dBi.
 ==Grid antenna==

@@ Line 32: / Line 32: @@
 ==Yagi antenna==
-A commonly used directional antenna is the Yagi-Uda Array, usually just called a Yagi. It was invented by Shintaro Uda and his colleague, Hidetsugu Yagi, in 1926. A Yagi antenna uses several elements to form a directional array. A single driven element, typically a dipole, propagates RF energy; elements placed immediately in front of and behind the driven element re-radiate RF energy in phase and out of phase, enhancing and retarding the signal, respectively. The elements are called parasitic elements; the element behind the driven element is called the reflector, while the elements in front of the driven element are called directors. Yagi antennas have beamwidths in the range of 30 to 80 degrees and can provide well in excess of 10 dBi passive gain. A multi-element high-gain Yagi is shown in Figure 4.
 ==Parabolic or dish antenna==

@@ Line 28: / Line 28: @@
 ==Sector antenna==
-Sector antennas are another type of semi-directional antenna. Sector antennas provide a pie-shaped (sector) radiation pattern and are usually installed in what is known as a sectorized array. Beamwidth for a sector antenna can be between 60 to 180 degrees, with 120 degrees being typical. In a sectorized array, antennas are mounted back-to-back to provide full 360-degree coverage. Sector antennas are used extensively for cellular communication.
+Sector Antena adalah jenis lain dari semi-directional antenna. Sector Antena memberikan pola radiasi berbentuk pie (sektor) dan biasanya dipasang dalam apa yang dikenal sebagai array sektor. Beamwidth untuk antena sektor bisa antara 60 sampai 180 derajat, dengan tipikal 120 derajat. Dalam sectorized array, antena dipasang saling membelakangi untuk menyediakan cakupan 360 derajat penuh. Antena sektoral digunakan secara luas untuk komunikasi seluler.
 ==Yagi antenna==

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 ==Patch antenna, microstrip antenna==
-A patch antenna is a semi-directional radiator using a flat metal strip mounted above a ground plane. Radiation from the back of the antenna is effectively cut off by the ground plane, enhancing forward directionality. This type of antenna is also known as a microstrip antenna. It is typically rectangular and enclosed in a plastic enclosure. This type of antenna lends itself to being manufactured by standard printed circuit board methods. Patch antennas are widely used semi-directionals; a patch antenna can have a beamwidth of between 30 to 180 degrees and a typical gain of 9 dB.
 ==Sector antenna==

@@ Line 20: / Line 20: @@
 ==Directional antenna==
-Directional and semi-directional antennas focus radiated power into narrow beams, adding a significant amount of gain in the process. Antenna properties are also reciprocal. The characteristics of a transmitting antenna, such as impedance and gain, are also applicable to a receiving antenna. This is why the same antenna can be used for both sending and receiving. The gain of a highly directional parabolic antenna serves to amplify a weak signal; this is one reason why this type of antenna is frequently used for long distance links.
 ==Patch antenna, microstrip antenna==

← Older revision		Revision as of 02:40, 23 November 2022
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	EIRP, atau setara (atau effective) isotropic radiated power, adalah ukuran daya maksimum yang akan dipancarkan antena isotropik teoretis ke arah penguatan antena maksimum. EIRP memperhitungkan kerugian dari saluran transmisi dan konektor, dan termasuk penguatan antena yang sebenarnya. EIRP memungkinkan perhitungan keluaran daya nyata dan nilai kekuatan medan, jika penguatan antena aktual dan daya keluaran pemancar diketahui.		EIRP, atau setara (atau effective) isotropic radiated power, adalah ukuran daya maksimum yang akan dipancarkan antena isotropik teoretis ke arah penguatan antena maksimum. EIRP memperhitungkan kerugian dari saluran transmisi dan konektor, dan termasuk penguatan antena yang sebenarnya. EIRP memungkinkan perhitungan keluaran daya nyata dan nilai kekuatan medan, jika penguatan antena aktual dan daya keluaran pemancar diketahui.
−
−	~~==Dipole antennas, rubber ducky==~~
−
−	Dipole antennas are the most common type of antenna used and are omni-directional, propagating radio frequency (RF) energy 360 degrees in the horizontal plane. These devices are constructed to be resonant at a half or quarter wavelength of the frequency being applied. This antenna can be as simple as two pieces of wire cut to the proper length or can be encapsulated as shown in the illustration; this configuration is commonly referred to as a “rubber ducky” antenna. The dipole is used in many enterprise and small office and home office (SOHO) Wi-Fi deployments.
−
−	An antenna exhibits a typical impedance, allowing for matching of the antenna to the transmitter for maximum power transfer. If the antenna and transmitter are not matched, reflections will occur on the transmission line which will degrade the signal or even damage the transmitter. These reflections are described by the term standing wave ratio (SWR) and indicate the efficiency of the transmission line. SWR of 1:1 would indicate that no power is reflected and lost; 5:1 would indicate a reflection and loss of 44%. SWR is commonly used as a voltage ratio and referred to as VSWR.
−
−

	==Antena dipole, rubber ducky==		==Antena dipole, rubber ducky==

@@ Line 14: / Line 14: @@
 ==Dipole antennas, rubber ducky==
 Dipole antennas are the most common type of antenna used and are omni-directional, propagating radio frequency (RF) energy 360 degrees in the horizontal plane. These devices are constructed to be resonant at a half or quarter wavelength of the frequency being applied. This antenna can be as simple as two pieces of wire cut to the proper length or can be encapsulated as shown in the illustration; this configuration is commonly referred to as a “rubber ducky” antenna. The dipole is used in many enterprise and small office and home office (SOHO) Wi-Fi deployments.
 An antenna exhibits a typical impedance, allowing for matching of the antenna to the transmitter for maximum power transfer. If the antenna and transmitter are not matched, reflections will occur on the transmission line which will degrade the signal or even damage the transmitter. These reflections are described by the term standing wave ratio (SWR) and indicate the efficiency of the transmission line. SWR of 1:1 would indicate that no power is reflected and lost; 5:1 would indicate a reflection and loss of 44%. SWR is commonly used as a voltage ratio and referred to as VSWR.
 ==Directional antenna==

@@ Line 7: / Line 7: @@
 * Antena directional memiliki "beam" sempit yang memungkinkan perambatan yang sangat terarah; jenis akrab adalah parabola dan Yagi. Masing-masing memiliki karakteristik dan aplikasi yang unik.
-==Passive gain amplifies the signal==
+Semua antena menunjukkan penguatan pasif, yang berfungsi untuk memperkuat sinyal. Gain pasif diukur dengan kuantitas dBi, yang merupakan gain yang dirujuk ke antena isotropik teoretis; antena isotropik mentransmisikan energi secara merata ke segala arah, dan tidak ada di alam. Gain antena dipole setengah gelombang yang ideal adalah 2,15 dBi. Perlu juga dicatat bahwa ketika directionality meningkat, demikian juga gain.
-EIRP, or equivalent (or effective) isotropic radiated power, is the measure of the maximum power a theoretical isotropic antenna would emit in the direction of maximum antenna gain. EIRP accounts for losses from transmission lines and connectors, and includes actual antenna gain. EIRP allows calculation of real power output and field strength values, if actual antenna gain and transmitter output power are known.
+EIRP, atau setara (atau effective) isotropic radiated power, adalah ukuran daya maksimum yang akan dipancarkan antena isotropik teoretis ke arah penguatan antena maksimum. EIRP memperhitungkan kerugian dari saluran transmisi dan konektor, dan termasuk penguatan antena yang sebenarnya. EIRP memungkinkan perhitungan keluaran daya nyata dan nilai kekuatan medan, jika penguatan antena aktual dan daya keluaran pemancar diketahui.
 ==Dipole antennas, rubber ducky==

@@ Line 3: / Line 3: @@
 Ada beberapa jenis antena dalam tiga kategori besar: omni-directional, directional, dan semi-directional.
-* Omni-directional antennas propagate in all directions.
+* Antena omni-directional merambat ke segala arah.
-* Semi-directional antennas propagate in a constricted fashion, defined by a specific angle.
+* Antena semi-arah menyebar secara terbatas, ditentukan oleh sudut tertentu.
-* Directional antennas have a narrow “beam” that allows highly directional propagation; familiar types are the parabolic and Yagi. Each has unique characteristics and applications.
+* Antena directional memiliki "beam" sempit yang memungkinkan perambatan yang sangat terarah; jenis akrab adalah parabola dan Yagi. Masing-masing memiliki karakteristik dan aplikasi yang unik.
 ==Passive gain amplifies the signal==